The document discusses various types of errors that can occur in diagnostic radiology, including perceptual errors, interpretative errors, and biases. It provides examples of common missed findings on different imaging modalities due to factors like selective looking, satisfaction of search, and faulty reasoning. Specific cases are presented where important abnormalities were missed on initial reads but evident on retrospective review. The document emphasizes that radiological errors are an inevitable part of the complex cognitive work of diagnostic imaging due to human perceptual and cognitive limitations, rather than a reflection of negligence. Large worldwide volumes of imaging make even small error rates translate to many missed diagnoses.
This document outlines the study objectives for understanding the basics of emergency radiology. It will cover the basic physics of imaging modalities like plain radiography, ultrasound and CT scans. It will discuss the advantages and limitations of each modality as well as basic rules for requesting radiology exams. It will also cover principles of picture archiving systems and current and future trends in radiology. The document then begins discussing the basics of plain film radiography, explaining how it uses x-rays to create 2D images projected on a screen from a 3D object.
Doppler ultrasound of A-V access for hemodialysisSamir Haffar
This document discusses Doppler ultrasound evaluation of arteriovenous (A-V) access for hemodialysis. It begins with an overview of normal Doppler ultrasound findings of the upper extremity arteries and veins. It then covers preoperative ultrasound vascular mapping to determine suitable sites for A-V access creation. The document reviews the different types of A-V accesses used for hemodialysis and the normal Doppler ultrasound findings of functioning A-V accesses. It also discusses routine surveillance of asymptomatic patients and complications that can be identified with Doppler ultrasound of A-V accesses.
The documents discuss standards and safety plans for radiology departments. The standards require radiology departments to have documented safety plans that include periodic equipment inspections and calibrations, safe handling of radioactive materials, safety signage, pregnancy checks, radiation exposure monitoring for staff, provision of protective equipment, and record keeping. The safety plans aim to ensure safe diagnostic imaging equipment and implement corrective actions when needed. The documents also discuss minimizing radiation exposure through limiting time, increasing distance from sources, and using shielding.
This document provides an overview of various radiology modalities including:
1. Plain film radiography, computed tomography (CT), CT angiography, magnetic resonance imaging (MRI), ultrasound, and picture archiving and communication systems (PACS).
2. It discusses the basics of each modality such as their physical principles, advantages, limitations and appropriate clinical applications.
3. The document emphasizes important rules for clinicians in selecting the right imaging exam, discussing exams with radiologists, and preparing patients for radiology procedures.
Hepatic arterial anatomy and vascular optimization finalpryce27
1. This document summarizes hepatic arterial anatomy and variants based on a review of over 600 angiograms.
2. It describes the typical hepatic arterial anatomy and variants including replaced or accessory left/right hepatic arteries. Accessory arteries usually supply a distinct territory.
3. Extrahepatic collateral arteries are discussed which can supply hepatocellular carcinoma, including the phrenic, omental, intercostal, and adrenal arteries. Recognition of these collateral arteries is important to avoid complications during embolization.
This radiology report contains two X-ray images of a patient's skull. An AP (anterior-posterior) view and a lateral view are included to examine the skull from different angles. No abnormalities are noted on the skull X-rays based on the limited information provided.
Role of medical imaging in management of arteriovenous fistula Dr. Muhammad B...Dr. Muhammad Bin Zulfiqar
This presentation is very helpful for vascular sergeons, interventional radiologists and sonographers that how to map Vasculature before construction of AV fistula for hemodialysis, how to check its patency, how to check its proper functioning ,to comment on its failure and decide when to reintervene.
Primer in quality improvement in radiology departmentAhmed Bahnassy
This document provides guidance on developing and implementing a quality improvement plan for a radiology department. It discusses identifying areas for improvement, collecting relevant data, setting targets, developing a work plan, implementing changes, monitoring results, and continually refining the process. Key aspects of quality improvement covered include using tools like fishbone diagrams and SWOT analyses to identify root causes of issues, applying the PDSA (Plan-Do-Study-Act) cycle of testing changes, and developing standardized reporting templates to improve consistency and communication. Examples of specific quality improvement projects focused on areas like lumbar spine MRI reporting and management of indeterminate pulmonary nodules are also provided.
This document outlines the study objectives for understanding the basics of emergency radiology. It will cover the basic physics of imaging modalities like plain radiography, ultrasound and CT scans. It will discuss the advantages and limitations of each modality as well as basic rules for requesting radiology exams. It will also cover principles of picture archiving systems and current and future trends in radiology. The document then begins discussing the basics of plain film radiography, explaining how it uses x-rays to create 2D images projected on a screen from a 3D object.
Doppler ultrasound of A-V access for hemodialysisSamir Haffar
This document discusses Doppler ultrasound evaluation of arteriovenous (A-V) access for hemodialysis. It begins with an overview of normal Doppler ultrasound findings of the upper extremity arteries and veins. It then covers preoperative ultrasound vascular mapping to determine suitable sites for A-V access creation. The document reviews the different types of A-V accesses used for hemodialysis and the normal Doppler ultrasound findings of functioning A-V accesses. It also discusses routine surveillance of asymptomatic patients and complications that can be identified with Doppler ultrasound of A-V accesses.
The documents discuss standards and safety plans for radiology departments. The standards require radiology departments to have documented safety plans that include periodic equipment inspections and calibrations, safe handling of radioactive materials, safety signage, pregnancy checks, radiation exposure monitoring for staff, provision of protective equipment, and record keeping. The safety plans aim to ensure safe diagnostic imaging equipment and implement corrective actions when needed. The documents also discuss minimizing radiation exposure through limiting time, increasing distance from sources, and using shielding.
This document provides an overview of various radiology modalities including:
1. Plain film radiography, computed tomography (CT), CT angiography, magnetic resonance imaging (MRI), ultrasound, and picture archiving and communication systems (PACS).
2. It discusses the basics of each modality such as their physical principles, advantages, limitations and appropriate clinical applications.
3. The document emphasizes important rules for clinicians in selecting the right imaging exam, discussing exams with radiologists, and preparing patients for radiology procedures.
Hepatic arterial anatomy and vascular optimization finalpryce27
1. This document summarizes hepatic arterial anatomy and variants based on a review of over 600 angiograms.
2. It describes the typical hepatic arterial anatomy and variants including replaced or accessory left/right hepatic arteries. Accessory arteries usually supply a distinct territory.
3. Extrahepatic collateral arteries are discussed which can supply hepatocellular carcinoma, including the phrenic, omental, intercostal, and adrenal arteries. Recognition of these collateral arteries is important to avoid complications during embolization.
This radiology report contains two X-ray images of a patient's skull. An AP (anterior-posterior) view and a lateral view are included to examine the skull from different angles. No abnormalities are noted on the skull X-rays based on the limited information provided.
Role of medical imaging in management of arteriovenous fistula Dr. Muhammad B...Dr. Muhammad Bin Zulfiqar
This presentation is very helpful for vascular sergeons, interventional radiologists and sonographers that how to map Vasculature before construction of AV fistula for hemodialysis, how to check its patency, how to check its proper functioning ,to comment on its failure and decide when to reintervene.
Primer in quality improvement in radiology departmentAhmed Bahnassy
This document provides guidance on developing and implementing a quality improvement plan for a radiology department. It discusses identifying areas for improvement, collecting relevant data, setting targets, developing a work plan, implementing changes, monitoring results, and continually refining the process. Key aspects of quality improvement covered include using tools like fishbone diagrams and SWOT analyses to identify root causes of issues, applying the PDSA (Plan-Do-Study-Act) cycle of testing changes, and developing standardized reporting templates to improve consistency and communication. Examples of specific quality improvement projects focused on areas like lumbar spine MRI reporting and management of indeterminate pulmonary nodules are also provided.
Pompili M. Fegato (Anatomia e Patologia Diffusa) Colecisti e Vie Biliari. ASM...Gianfranco Tammaro
PROF. POMPILI MAURIZIO - Master ECM in Ecografia Internistica 2016 - Sabato 16 - 30 Gennaio e 13 Febbraio 2016 - Sala Congressi Fondazione Santa Lucia - Via Ardeatina n. 354 - ROMA
Sito ASMaD: http://www.asmad.net
Image Optimization for Critical Care Ultrasoundnswhems
This document provides guidance on optimizing ultrasound images for critical care applications. It discusses adjusting various image settings like depth, focal zones, harmonics and M-mode to improve image quality for assessing lungs, IVC, and heart. M-mode is recommended for measuring movement and dimensions more accurately than B-mode. The challenges of cardiac imaging are also covered, noting the need for higher frame rates and reduced averaging and spatial resolution to capture fast heart motion. Narrowing the sector width and decreasing depth can help optimize the cardiac image within these limits.
Presentation1.pptx, radiological anatomy of the brain and pituitary glandAbdellah Nazeer
The document summarizes the normal radiological anatomy of the brain and pituitary gland as seen on computed tomography (CT) and magnetic resonance imaging (MRI). It describes the overall structure of the brain, including the cerebrum, cerebellum, brainstem, and four ventricles. It details the anatomy of the lateral, third, and fourth ventricles. It then outlines the major lobes and gyri of the cerebral hemispheres, including important motor and sensory areas. The document concludes by reviewing sectional anatomy as seen on axial CT and MRI scans.
This document provides objectives and case descriptions for identifying various pediatric conditions based on x-ray findings, including lobar emphysema, vertebral fractures, pneumomediastinum, pneumonia, ingested disk battery, necrotizing enterocolitis, midgut volvulus, abdominal abscess, fractures, retropharyngeal abscess, infant skull sutures and fractures, leptomeningeal cyst, syphilis of the bone, rickets, and vascular rings. Each case includes an x-ray image and description of findings to aid in diagnosis.
The document discusses emergency ultrasound in trauma patients. It describes how focused abdominal sonography for trauma (FAST) uses 4 views to detect free fluid in trauma patients in 3 minutes or less. Studies show FAST has a sensitivity of 81-98% and specificity of 88-100% for detecting intra-abdominal bleeding. While not showing specific injuries, FAST effectively detects patients needing surgery. The document also discusses using ultrasound to detect hemothorax, pericardial fluid, and penetrating cardiac wounds.
Cross Sectional Anatomy of Paranasal sinus Sarbesh Tiwari
The document summarizes the anatomy and variations of the paranasal sinuses. It describes the locations and openings of the different sinus groups. Key anatomical structures involved in sinus drainage like the osteomeatal complex are also explained. Common anatomic variations seen on imaging that can affect sinus drainage are discussed. These variations include concha bullosa, Haller cells, Onodi cells and pneumatization of surrounding bones.
This document provides an overview of ultrasound probe types, imaging modes, and basic controls. It discusses the different types of probes and basic ultrasound imaging modes including B-mode, M-mode, color flow mode, and Doppler mode. For each mode, it lists the main controls and knob functions, and provides guidance on optimizing settings like frequency, depth, gain, and pulse repetition frequency. The document serves as a basic guide to ultrasound machine controls and settings for different imaging applications.
Ultrasonography - History, evolution and principlesaparna666
This document provides an overview of ultrasound imaging and its applications in head and neck imaging. It discusses the history and evolution of ultrasound from its origins in sonar to modern medical applications. The basic physics of ultrasound such as piezoelectricity and acoustic impedance are explained. The document outlines the components of an ultrasound machine and different imaging modes. Finally, it demonstrates how ultrasound can be used to visualize normal head and neck anatomy and diagnose various pathologies.
This document provides information and resources for evaluating the job performance of an admitting clerk, including:
- A job performance evaluation form with sections to rate performance factors like administration, communication, teamwork, and safety using ratings like "Outstanding" and "Below Expectations."
- Phrases to use in admitting clerk performance reviews covering areas such as attitude, creativity, decision-making, interpersonal skills, and problem solving.
- An overview of the top 12 methods for admitting clerk performance appraisal, including Management by Objectives, Critical Incident Method, Behaviorally Anchored Rating Scales, and 360 Degree Feedback.
EMBRYOLOGY AND ANATOMY OF NASAL SINUSES.pptxAhlam Alzuway
1. The document describes the anatomy and development of the paranasal sinuses, including the ethmoid, maxillary, sphenoid, and frontal sinuses.
2. It discusses the boundaries, landmarks, variations, and classifications of each sinus. For example, it notes the ethmoid sinus originates from invaginations in the fifth month of development, while the maxillary sinus is the first to develop in the third month.
3. The document provides detailed information on anatomical structures and variations that are important to consider during endoscopic sinus surgery, such as the location of the optic nerve in the sphenoid sinus and different types of frontal sinus cells.
IMPORTANT COMMITTEE LIST for a hospital going for NABH /JCI by Dr.Mahboob ali...Healthcare consultant
The document lists 13 committees that are important for a hospital seeking accreditation from NABH or JCI. The committees meet with varying frequencies from monthly to yearly and are chaired by senior staff such as the Chairman, Medical Director, and Safety Officer. The committees include members from departments like Quality, Nursing, Pharmacy to oversee functions such as safety, infection control, mortality, ethics, and blood transfusion.
A picture archiving and communication system (PACS) is a medical imaging technology which provides economical storage and convenient access to images from multiple modalities.
In this presentation we are going to talk about:-
1-What is PACS?
2-History of PACS
3-Before and after PACS
4-PACS architecture
5-PACS integration with RIS
6-PACS and DICOM
7-Advantages and disadvantages
Lecture 9 professionalism in medical practice (06.03.2017)Dr Ghaiath Hussein
This document discusses the concept of professionalism in medical practice. It outlines the approaches and dimensions of professionalism, including clinicians' duties toward patients, colleagues, their profession, and community. It emphasizes qualities like altruism, excellence, duty, and respect. The document also discusses signs of unprofessional behavior and provides examples from clinical and classroom settings.
Radiographers are medical professionals who perform diagnostic imaging examinations and procedures to help physicians diagnose and treat diseases. They work under the supervision of radiologists to operate X-ray, CT, MRI, ultrasound and other medical imaging equipment and must have a strong understanding of human anatomy and pathology. Radiographers are responsible for correctly positioning patients, ensuring proper imaging techniques are used, and evaluating the quality of the resulting images.
Ultrasound uses sound waves with frequencies greater than the human ear can hear to produce images of structures inside the body. The document discusses several key ultrasound imaging terms and techniques including probes, depth, focus, gain, and time gain compensation. It describes how ultrasound is used to visualize muscles, tendons, ligaments, and other soft tissues, noting advantages like portability and ability to stress test during imaging. Limitations include operator dependence and inability to penetrate bone or cross air interfaces.
This document contains descriptions and radiographic images of various uterine and fallopian tube abnormalities that can be identified on hysterosalpingograms. These include normal anatomy as well as pathologies such as polyps, fibroids, adhesions, deformities, occlusions, and hydrosalpinges. Spot radiographs are shown demonstrating the characteristic appearances of these different conditions within the uterus and fallopian tubes.
This document discusses the history and technology of multi-slice CT scanning. It describes how multi-slice CT has evolved from 4-slice machines in 1999 to newer generations with more slices. The key components of a multi-slice CT scanner are described as the generator, x-ray tube, and solid state detector. Multi-slice CT provides advantages over single-slice machines like improved spatial resolution, reduced motion artifacts, and less need for intravenous contrast. New detection technologies like the stellar detector allow for ultra-thin slices and low dose imaging. The document outlines several applications and impact areas of multi-slice CT scanning.
Challenges in quality management of diagnostic medical imagingMohammad Fathi
Key challenges in quality management of diagnostic medical imaging departments include developing methods to collect and deliver knowledge about quality care to practitioners. Quality consists of technical outcome and service delivery. Key performance indicators used are customer satisfaction, patient access to appointments, and reporting time. Measuring and monitoring quality indicators is important to prove high quality imaging services. Maintaining good employee and departmental policies is also important for quality management.
Ultrasound of acute & chronic cholecystitisSamir Haffar
This document discusses ultrasound findings related to cholecystitis. It describes the ultrasound appearance of acute cholecystitis, including signs like gallbladder wall thickening, pericholecystic fluid, and hyperemia on Doppler. Complications of acute cholecystitis are also reviewed, such as emphysematous cholecystitis where gas is visible in the gallbladder wall. Chronic cholecystitis is also summarized, noting findings like gallstones, wall thickening, and occasionally calcification or nodules indicative of xanthogranulomatous cholecystitis.
The document discusses the virtues and vices of teleradiology as well as potential malpractice issues. It notes that while teleradiology can provide timely interpretations from subspecialists, it also poses risks such as limited access to prior images and clinical data as well as less communication with ordering physicians. The document also examines issues radiologists may face with incidental findings, such as whether to report things like small cysts that likely have little clinical significance but could theoretically be early cancers. Overall it presents many complex factors around these areas of radiology practice.
IV Jornada. Sp y práctica reflexiva f borrell_pompeu fabra_2011Sano y Salvo
Es la conferencia inaugural de la IV Jornada, de Borrell-Carrió. Hizo una revisión muy interesante de como nuestros automatismos mentales pueden poner en riesgo la práctica de un diagnóstico acertado, sobretodo en los casos en los que la primera impresión no es la acertada.
Pompili M. Fegato (Anatomia e Patologia Diffusa) Colecisti e Vie Biliari. ASM...Gianfranco Tammaro
PROF. POMPILI MAURIZIO - Master ECM in Ecografia Internistica 2016 - Sabato 16 - 30 Gennaio e 13 Febbraio 2016 - Sala Congressi Fondazione Santa Lucia - Via Ardeatina n. 354 - ROMA
Sito ASMaD: http://www.asmad.net
Image Optimization for Critical Care Ultrasoundnswhems
This document provides guidance on optimizing ultrasound images for critical care applications. It discusses adjusting various image settings like depth, focal zones, harmonics and M-mode to improve image quality for assessing lungs, IVC, and heart. M-mode is recommended for measuring movement and dimensions more accurately than B-mode. The challenges of cardiac imaging are also covered, noting the need for higher frame rates and reduced averaging and spatial resolution to capture fast heart motion. Narrowing the sector width and decreasing depth can help optimize the cardiac image within these limits.
Presentation1.pptx, radiological anatomy of the brain and pituitary glandAbdellah Nazeer
The document summarizes the normal radiological anatomy of the brain and pituitary gland as seen on computed tomography (CT) and magnetic resonance imaging (MRI). It describes the overall structure of the brain, including the cerebrum, cerebellum, brainstem, and four ventricles. It details the anatomy of the lateral, third, and fourth ventricles. It then outlines the major lobes and gyri of the cerebral hemispheres, including important motor and sensory areas. The document concludes by reviewing sectional anatomy as seen on axial CT and MRI scans.
This document provides objectives and case descriptions for identifying various pediatric conditions based on x-ray findings, including lobar emphysema, vertebral fractures, pneumomediastinum, pneumonia, ingested disk battery, necrotizing enterocolitis, midgut volvulus, abdominal abscess, fractures, retropharyngeal abscess, infant skull sutures and fractures, leptomeningeal cyst, syphilis of the bone, rickets, and vascular rings. Each case includes an x-ray image and description of findings to aid in diagnosis.
The document discusses emergency ultrasound in trauma patients. It describes how focused abdominal sonography for trauma (FAST) uses 4 views to detect free fluid in trauma patients in 3 minutes or less. Studies show FAST has a sensitivity of 81-98% and specificity of 88-100% for detecting intra-abdominal bleeding. While not showing specific injuries, FAST effectively detects patients needing surgery. The document also discusses using ultrasound to detect hemothorax, pericardial fluid, and penetrating cardiac wounds.
Cross Sectional Anatomy of Paranasal sinus Sarbesh Tiwari
The document summarizes the anatomy and variations of the paranasal sinuses. It describes the locations and openings of the different sinus groups. Key anatomical structures involved in sinus drainage like the osteomeatal complex are also explained. Common anatomic variations seen on imaging that can affect sinus drainage are discussed. These variations include concha bullosa, Haller cells, Onodi cells and pneumatization of surrounding bones.
This document provides an overview of ultrasound probe types, imaging modes, and basic controls. It discusses the different types of probes and basic ultrasound imaging modes including B-mode, M-mode, color flow mode, and Doppler mode. For each mode, it lists the main controls and knob functions, and provides guidance on optimizing settings like frequency, depth, gain, and pulse repetition frequency. The document serves as a basic guide to ultrasound machine controls and settings for different imaging applications.
Ultrasonography - History, evolution and principlesaparna666
This document provides an overview of ultrasound imaging and its applications in head and neck imaging. It discusses the history and evolution of ultrasound from its origins in sonar to modern medical applications. The basic physics of ultrasound such as piezoelectricity and acoustic impedance are explained. The document outlines the components of an ultrasound machine and different imaging modes. Finally, it demonstrates how ultrasound can be used to visualize normal head and neck anatomy and diagnose various pathologies.
This document provides information and resources for evaluating the job performance of an admitting clerk, including:
- A job performance evaluation form with sections to rate performance factors like administration, communication, teamwork, and safety using ratings like "Outstanding" and "Below Expectations."
- Phrases to use in admitting clerk performance reviews covering areas such as attitude, creativity, decision-making, interpersonal skills, and problem solving.
- An overview of the top 12 methods for admitting clerk performance appraisal, including Management by Objectives, Critical Incident Method, Behaviorally Anchored Rating Scales, and 360 Degree Feedback.
EMBRYOLOGY AND ANATOMY OF NASAL SINUSES.pptxAhlam Alzuway
1. The document describes the anatomy and development of the paranasal sinuses, including the ethmoid, maxillary, sphenoid, and frontal sinuses.
2. It discusses the boundaries, landmarks, variations, and classifications of each sinus. For example, it notes the ethmoid sinus originates from invaginations in the fifth month of development, while the maxillary sinus is the first to develop in the third month.
3. The document provides detailed information on anatomical structures and variations that are important to consider during endoscopic sinus surgery, such as the location of the optic nerve in the sphenoid sinus and different types of frontal sinus cells.
IMPORTANT COMMITTEE LIST for a hospital going for NABH /JCI by Dr.Mahboob ali...Healthcare consultant
The document lists 13 committees that are important for a hospital seeking accreditation from NABH or JCI. The committees meet with varying frequencies from monthly to yearly and are chaired by senior staff such as the Chairman, Medical Director, and Safety Officer. The committees include members from departments like Quality, Nursing, Pharmacy to oversee functions such as safety, infection control, mortality, ethics, and blood transfusion.
A picture archiving and communication system (PACS) is a medical imaging technology which provides economical storage and convenient access to images from multiple modalities.
In this presentation we are going to talk about:-
1-What is PACS?
2-History of PACS
3-Before and after PACS
4-PACS architecture
5-PACS integration with RIS
6-PACS and DICOM
7-Advantages and disadvantages
Lecture 9 professionalism in medical practice (06.03.2017)Dr Ghaiath Hussein
This document discusses the concept of professionalism in medical practice. It outlines the approaches and dimensions of professionalism, including clinicians' duties toward patients, colleagues, their profession, and community. It emphasizes qualities like altruism, excellence, duty, and respect. The document also discusses signs of unprofessional behavior and provides examples from clinical and classroom settings.
Radiographers are medical professionals who perform diagnostic imaging examinations and procedures to help physicians diagnose and treat diseases. They work under the supervision of radiologists to operate X-ray, CT, MRI, ultrasound and other medical imaging equipment and must have a strong understanding of human anatomy and pathology. Radiographers are responsible for correctly positioning patients, ensuring proper imaging techniques are used, and evaluating the quality of the resulting images.
Ultrasound uses sound waves with frequencies greater than the human ear can hear to produce images of structures inside the body. The document discusses several key ultrasound imaging terms and techniques including probes, depth, focus, gain, and time gain compensation. It describes how ultrasound is used to visualize muscles, tendons, ligaments, and other soft tissues, noting advantages like portability and ability to stress test during imaging. Limitations include operator dependence and inability to penetrate bone or cross air interfaces.
This document contains descriptions and radiographic images of various uterine and fallopian tube abnormalities that can be identified on hysterosalpingograms. These include normal anatomy as well as pathologies such as polyps, fibroids, adhesions, deformities, occlusions, and hydrosalpinges. Spot radiographs are shown demonstrating the characteristic appearances of these different conditions within the uterus and fallopian tubes.
This document discusses the history and technology of multi-slice CT scanning. It describes how multi-slice CT has evolved from 4-slice machines in 1999 to newer generations with more slices. The key components of a multi-slice CT scanner are described as the generator, x-ray tube, and solid state detector. Multi-slice CT provides advantages over single-slice machines like improved spatial resolution, reduced motion artifacts, and less need for intravenous contrast. New detection technologies like the stellar detector allow for ultra-thin slices and low dose imaging. The document outlines several applications and impact areas of multi-slice CT scanning.
Challenges in quality management of diagnostic medical imagingMohammad Fathi
Key challenges in quality management of diagnostic medical imaging departments include developing methods to collect and deliver knowledge about quality care to practitioners. Quality consists of technical outcome and service delivery. Key performance indicators used are customer satisfaction, patient access to appointments, and reporting time. Measuring and monitoring quality indicators is important to prove high quality imaging services. Maintaining good employee and departmental policies is also important for quality management.
Ultrasound of acute & chronic cholecystitisSamir Haffar
This document discusses ultrasound findings related to cholecystitis. It describes the ultrasound appearance of acute cholecystitis, including signs like gallbladder wall thickening, pericholecystic fluid, and hyperemia on Doppler. Complications of acute cholecystitis are also reviewed, such as emphysematous cholecystitis where gas is visible in the gallbladder wall. Chronic cholecystitis is also summarized, noting findings like gallstones, wall thickening, and occasionally calcification or nodules indicative of xanthogranulomatous cholecystitis.
The document discusses the virtues and vices of teleradiology as well as potential malpractice issues. It notes that while teleradiology can provide timely interpretations from subspecialists, it also poses risks such as limited access to prior images and clinical data as well as less communication with ordering physicians. The document also examines issues radiologists may face with incidental findings, such as whether to report things like small cysts that likely have little clinical significance but could theoretically be early cancers. Overall it presents many complex factors around these areas of radiology practice.
IV Jornada. Sp y práctica reflexiva f borrell_pompeu fabra_2011Sano y Salvo
Es la conferencia inaugural de la IV Jornada, de Borrell-Carrió. Hizo una revisión muy interesante de como nuestros automatismos mentales pueden poner en riesgo la práctica de un diagnóstico acertado, sobretodo en los casos en los que la primera impresión no es la acertada.
This document summarizes key points from a presentation on radiologic errors given at a conference. It discusses defining medical errors and differentiating them from complications. Error rates from retrospective studies of radiology are presented, ranging from 25-90% for missed cancers depending on the imaging modality and body area. Prospective "real-time" error rates are estimated to be 3-4%. Causes of errors including perceptual and cognitive factors are reviewed. Standards of care, hindsight bias, outcome bias and efforts to reduce errors are also discussed. An anecdote is shared about lawyers and doctors continuing adversarial relationship on flights.
This survey of radiographers in Australian hospitals investigated their participation in abnormality detection systems for trauma radiographs, their perceptions of the benefits and barriers of radiographer commenting, and their views on radiographer image interpretation services. The results found that most radiographers participated in abnormality detection for less than 20% or more than 80% of examinations. Perceived benefits included assisting patient care, but barriers included limited access to image interpretation education and low confidence. Improving access to education was seen as an enabler for greater participation in detection and commenting systems.
How predictive analytics can help find the rare disease patientIMSHealthRWES
This document discusses how predictive analytics using real-world data can help identify undiagnosed rare disease patients. It describes two case studies: 1) A screening algorithm identified potentially undiagnosed patients for a rare multi-system disease with a high risk prevalence of 20.5% compared to 0.7% of the population. 2) An analysis of a rare cardiac disease identified health system barriers like variability between diagnostic centers that could cause under diagnosis. While initial results are promising, challenges remain around data privacy, sample size, and clinician adoption of screening algorithms.
Initial Lessons From Implementing a Telecolposcopy Program on a High Risk Pop...MobileODT
Initial findings from a study on implementing a telecolposcopy program on a high-risk population in California showed that:
1) Experts were able to assist junior providers remotely and provide guidance in real-time during colposcopy procedures through a mobile telecolposcopy system.
2) Both patients and providers reacted positively to the use of live remote expert supervision during telecolposcopy exams.
3) Preliminary results suggest telecolposcopy is a feasible approach when integrated into a mobile colposcopy system and may help address lack of in-person colposcopy services, especially for underserved populations.
Access to treatment, care and clinical trials by patients with rare cancers...patvocates
"Access to treatment, care and clinical trials by patients with rare cancers", presented by Jan Geissler (Twitter @jangeissler) at ESMO congress in Vienna, 30 Sept 2012
This document summarizes a study examining biases that could affect the diagnostic accuracy of CT scans and MRI for detecting appendicitis in pediatric patients. It notes several potential biases including: selection bias from only enrolling patients over 12 years old; information bias from differences in protocols for oral contrast and radiologist experience levels; and confounding biases from longer interpretation times for MRI and differences in experience between abdominal and pediatric radiologists. The study included 48 patients ages 12-20 years old who received CT scans and MRI reads by both abdominal and pediatric radiologists to evaluate differences in diagnostic performance between imaging modalities and reader specialties.
This document discusses medical errors and misdiagnosis. It notes that one in five medical errors are potentially serious or fatal, and that the most common reasons for medical malpractice claims are surgery errors and diagnostic errors. Diagnostic errors account for many preventable deaths annually in the US. Some of the leading causes of misdiagnosis discussed include lack of healthcare professionals, poor teamwork and follow up, human cognitive factors, and too much focus on one exam finding. The document also provides strategies to reduce errors such as thorough history taking, physical exams, using diagnostic aids, and always following up on concerning symptoms.
The document discusses the probabilistic nature of medical diagnosis and risk in clinical decision making. Some key points made include:
1. Physicians make probability assessments rather than definitive diagnoses and must accept some level of risk in their practice.
2. Even when a diagnosis is missed, harm does not always result as it depends on a sequence of subsequent events, and patients may improve on their own or be correctly diagnosed in the future.
3. Both sensitivity and specificity are important considerations for screening tests, but sensitivity is most important for ruling out a diagnosis while specificity prevents overdiagnosis of false positives.
4. There are risks and benefits to patients from diagnostic testing and treatment decisions, and physicians must weigh
Medication errors are a significant problem in healthcare that can harm patients. They occur commonly at various stages of the medication process including prescribing, transcribing, preparing, dispensing, and administering medications. Several studies over decades have found high rates of medication errors and preventable adverse drug events in hospitals. James Reason developed a widely used model for classifying errors as either active failures by frontline staff or latent failures due to upstream organizational or management issues. Understanding the causes of errors through models like Reason's can help pharmacists and other healthcare providers develop effective strategies to improve medication safety.
Radiology is a dynamic medical specialty that uses various imaging technologies to diagnose and treat diseases. While radiologists are often thought to work alone interpreting images in dark rooms, the reality is that radiology involves direct patient care, communication with other physicians, and teaching residents. The field also has many subspecialties and opportunities to specialize further in areas like interventional radiology that perform medical procedures. There are several pathways to become a radiologist, including integrated programs, with demand expected to remain steady due to advancing technologies.
Radiology is a dynamic specialty that uses various imaging modalities like X-rays, CT, MRI, ultrasound, and nuclear medicine to diagnose and treat diseases. Radiologists communicate results to other doctors and patients. While radiologists spend time interpreting images, they also perform procedures, see and talk to patients, and are involved in multi-disciplinary teams. There are many radiology subspecialties focused on different body systems and imaging modalities. Radiology residents train for 4 years including call duties and take their board exams in their third year before pursuing optional fellowship training in a subspecialty.
Cutting Edge Conversations: Addressing Orphan and Rare DiseasesInsideScientific
There are over 7,000 rare and orphan diseases known to impact approximately 1 in 17 individuals globally, or 50 million in the EU and USA alone. The development of safe, effective, and accessible therapies against these diseases has been challenged by manufacturing, clinical and regulatory hurdles. Despite these obstacles, increased awareness, greater funding, and new research technologies are driving discoveries in this area. Join this webinar to learn how various research groups are working in this space.
Dr. Zabinski discusses how Artificial Intelligence (AI) and Real-World Datasets (RWD) can work in synergy to address many of the challenges facing rare disease researchers, including better describing real-world epidemiology; identifying meaningful patterns in rare disease patient journeys; and assisting in finding patients, plus those not yet diagnosed. This presentation will briefly explore the ways AI and RWD together can enhance visibility into patient trajectories, improve rare disease patient identification for clinical trial recruitment and observational research, and shorten time to diagnosis.
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Diagnostic radiology errors and discrepancies (2).pptx
1. Diagnostic radiology errors and
discrepancies
• Dr. Vincent Batista Lemaire
• Locum Consultant Radiologist
• St. Richards Hospital ,University Hospital Sussex Hospitals Trust, NHS .
• Chichester , England , UK .
2. Dedicado a Mi padre Dr. Guarocuya Batista del Villar y mi
hermano Dr. Erasmo Vasquez Henriquez.
3. Diagnostic radiology errors and
discrepancies
• Dr. Vincent Batista Lemaire
• Locum Consultant Radiologist
• St. Richards Hospital ,University Hospital Sussex Hospitals Trust, NHS .
• Chichester , England , UK .
6. Human Error
• Bad publicity from an assumption that perfection is
achievable.
• Any error or discrepancy must be punished .
• The public expects the correct answer all the time .
• Tv dramas, media reports describing the error or discrepancy
as a scandal .
• Unfavourable remarks by politician and lawyers alike.
• Medical malpractice claims have been initiated alleging the
radiologist’s failure to detect os acromial and os trigonum
• Societal and government trend of placing increasing
expectation and legal obligation on radiologist. Jury would
expect general radiologist to have the same skills as
subspecialty radiologist .
7. Grading or scoring Error
• 2014, Royal College of Radiologist (RCR):
“grading or scoring errors…was unreliable or
subjective…of questionable value, with poor
agreement .”
• Could fuel a blaming culture; there is danger
od deliberate or malicious misuse of error
scoring system in the pursuit of personal
grievance.
9. Is there a problem ?
• - Humans will always make errors and radiologist are not different. (RCR )
• - Errors occur in the absence of negligence , hence in the absence of breach of
standard of care.
• - - Diagnostic errors in medicine causes patient harm , with the rate of missed ,
incorrect, or delayed diagnoses estimated to be as high as 10-15%. Autopsy have
identified major diagnostic discrepancies up to 20% of cases , hence 1 in every 5
patients overall .
• Overconfidence …appears to be endemic in medicine. Compared results of
diagnosis of ICU patient and autopsy showed that “clinicians who were
“completely certain” of the diagnosis antemorten were wrong 40% of the time.”
• “errors”: more appropriate to concentrate on “discrepancies” between a report an
a retrospective review of a film or outcome .
.
10. Is there a problem ?
• Worldwide radiologic examination approximately 1
billion . With a low error rate of 4% this would translate
in 40 million radiologist errors per year .
• - Some studies showed error rate of 10-15% with 2-20%
significant errors.
• - Unlike any other medical specialties, apart from
pathology, not only do we make errors but we store
images to allow retrospective review of our misses.
11. Is there a problem ?
• -Radiologist Leo Henry Garland (1903-1966) pioneer in the study of
radiologist error discovered that even skilled and experienced
radiologist failed to note important findings on 30% of CXR that
were positive for disease and also had 2% of false positive .
• - Second reading interpretation performed by experienced
abdominal imaging radiologist from Massachusetts General
Hospital compared to previous CT abdominopelvic report
interpreted by either themselves or colleagues , they disagreed
which each other more than 30% of the time –intra-observer- and
disagreed with themselves more than 25% of the time –inter
observer.
• A cancer diagnosis (false-positive) rate of up to 61%has been
quoted in screening mammography (Nelson HD et al.)
• “…humans are incorrigibly inconsistent in making summary
judgments of complex information “. Daniel Kahneman.
12. Sample of published studies of
radiological error: Adrian P Brady
• 1.) 1993 , Harvey et al. : Mammography : ca identified on previous studies
in 41% when blindly reinterpreted , and 75 % when reviewers were aware
subsequence findings.
• 2.) 1990,1994, Markus et al. : Barium enema : average observer missed
30% of visible lesions .
• 3.)2008, Siewert et al. : Oncologic CT : discordant interpretation in 31-37%,
with resultant change in radiological staging in 19%, and change in patient
treatment in up to 23%.
• 4.) 2007, Briggs et al . : Neuro Ct & MRI: 13% major and 21% minor
discrepancy rates (undercalls, overcalls & misinterpretations) when
specialist neuroradiologist second reading of studies initially interpreted
by general radiologist.
14. Missed breast cancer
• 35% of both interval cancers and screen-
detected cancers could be classified as missed.
• “missed”: detectable at retrospective review
of a previous obtained mammogram that was
prospectively reported as showing negative,
benign, or probably benign findings d as
missed
• Leslie R Lamb et al . ; Missed Breast Cancer : Effects of Subconscious Bias and lesion characteristic .
RadioGraphics Vol.40 , No 4,Jun 12 2020
15. Stages in imaging cycle
• 1. clinical question ; request of imaging
modality ; patient preparation and
cooperation .
• 2. imaging acquisition and processing .
• 3. Radiologist reporting and communication of
results.
17. Perceptual errors
• - All too often , a finding that is readily apparent in retrospect
is inexplicably missed.
• The consistency of experimental results on radiologist
perceptual errors reported worldwide, involving radiologist at
all levels of training and experience working in a wide variety
of clinical setting and across all imaging modalities , argues
convincingly against the idea that radiologist who make errors
are simply to blame for being careless , sloppy , or negligent
or for underperforming in some way; rather, the phenomenon
or radiologist underperception and misperception appears to
be an unvarying feature of the extremely complex system in
which radiologist operate. (Michael A Bruno et al.)
18. Perceptual errors
• 1. combined sensation in a historic frame of experience
and knowledge form a perception of normal or
abnormal structure .
• 2. perceptual error : those in which and important
abnormality is simply not seen on the images ,
• To be considered a perceptual error, the finding would
need to be deemed sufficiently conspicuous and
detectable in retrospect by the interpreting radiologist
or in the consensus of his or her peers. 60-80% false
negative . A few false positive , seen but no present .
19. CXR most common Perceptual errors
Jennifer J Donald and Stuart A Barnard: Common patterns in 558 diagnostic radiology errors
20. CXR most common Perceptual errors
Distribution of missed nodules. Median 16 mm
Jennifer J Donald and Stuart A Barnard: Common patterns in 558 diagnostic radiology errors
21. Cranial imaging most common
Perceptual errors
Jennifer J Donald and Stuart A Barnard: Common patterns in 558 diagnostic radiology errors
22. Body CT most common Perceptual
errors
Jennifer J Donald and Stuart A Barnard: Common patterns in 558 diagnostic radiology errors
23. Cognitive and interpretative errors
• 1. Cognitive : distinguish pathology from non-
pathology, and provides either a single
differential diagnosis .
• 2.Interpretative : 20%-40%
• 3.Radiologist may see an abnormality or a normal
variant , but they misunderstand its meaning or
importance , resulting in an incorrect diagnosis .
• 4. False positive : overcalling ; false negative :
undercalling
24. Radiologic Error Classification System 12-category
system developed by Kim and Mansfield
• Kim and Classification Scheme for Errors in Diagnostic Radiology
• Cause of Error Explanation Occurrence (%)
• 1.Complacency : An unimportant finding is appreciated but attributed to the wrong
• cause –a more serious cause (false-positive finding) 0,9
• 2.Faulty reasoning : A finding is appreciated and interpreted as abnormal
• but is attributed to the wrong cause (true-positive finding misclassified) 9.0
• 3.Lack of knowledge : A finding is seen but is attributed to the wrong cause
• because of a lack of knowledge on the part of the interpreter 3.0
• 4.Under-reading (missed finding) : A finding is present on the image but is missed 42.0
25. Radiologic Error Classification System 12-category
system developed by Kim and Mansfield
• 5.Poor communication : An abnormality is identified and interpreted correctly
• but the message does not reach the clinician 0.0
• 6.Technique : A finding is missed because of the limitations of the
• examination or technique 2.0
• 7.Prior examination : A finding is missed because of failure to consult prior
• radiologic studies or reports 5.0
• 8.History : A finding is missed because of inaccurate or incomplete clinical history 2.0
• 9.Location A : finding is missed because of the location of a lesion outside
• the area of interest on an image “tunnel vision”, “scrolling error”,
• “innattentional blindness” ,”gorilla in the midst syndrome”. 7.0
26. Radiologic Error Classification System 12-category
system developed by Kim and Mansfield
• 10.Satisfaction of search : A finding is missed because of failure to continue to
• search for additional abnormalities after the first
• abnormality was found , Premature termination 22.0
• 11.Complication : A complication from a procedure 0.5
• 12.Satisfaction of report (alliterative error: “I saw a saw that could out saw any other saw I ever
saw”; aliteracion : “tres tristes tigres “)
• A finding was missed because of overreliance on the radiology report from a
previous examination ; error in one report followed by error in next report” 6
• CONCLUSION:
• Delayed diagnoses were not recognized on subsequent radiologic examinations in about one
third of the cases. The most common types of error were underreading , satisfaction of
search, faulty reasoning, and location of the finding.
• Kim YW, Mansfield LT. Fool me twice: delayed diagnoses in radiology with emphasis on perpetuated errors. AJR Am J
Roentgenol 2014;202(3):465–470.
27. Most common biases
• A) anchoring bias: locks onto some salient feature too early in the diagnostic
process and discounts conflicting or new information gained subsequently .
• B) availability bias : recent experience with a disease may inflate the future
likehood of its being diagnosed again (conversely, if a disease has not been see for
a long time, it may be underdiagnosed).
• C) confirmation bias : look for confirmatory evidence to support a diagnostic
hypothesis and to ignore evidence that refutes the hypothesis .
• D) outcome bias, preference to opt for diagnosis decision that will lead the patient
to a better final outcome
• E) zebra retreat , self doubt about a remote or unusual diagnosis even though the
patient ‘s history and imaging finding support it .
• F) frame bias: initially viewing the images prior to reading the clinical details
28. Human brain
• The human brain is a network of about 20 billion
neurons – nerve cells – linked by several trillion
connections. Not to mention glial cells, which
scientists used to think were inactive scaffolding,
but increasingly view as an essential part of how
the brain works. Our brains give us movement,
language, senses, memories, consciousness and
personality. We know a lot more about the brain
than we used to, but it still seems far too
complicated for human understanding.
29. Human brain
• Many of these simple networks occur in the visual system. We used to
think that the eye was like a camera, taking a “snapshot” of the outside
world that was stored in the brain like a photo stuck in an album. It uses a
lens to focus an image on to the retina at the back of the eye, which
functions a bit like a roll of film – or, in today’s digital cameras, a charge-
coupled device, storing an image pixel by pixel. But we now know that
when the retina sends information to the brain’s visual cortex, the
similarity to a camera ends.
• Although we get a strong impression that what we are seeing is “out
there” in front of us, what determines that perception resides inside our
own heads. The brain decomposes images into simple pieces, works out
what they are, “labels” them with that information, and reassembles
them.
• An effective way to infer how something functions is to see what it does
when it goes wrong. It may be hard to understand a bridge while it stays
up, but you can learn a lot about strength of materials when it collapses.
34. Selective looking
• It is a well-known phenomenon that we do not
notice anything happening in our surroundings
while being absorbed in the inspection of
something; focusing our attention on a certain
object may happen to such an extent that we
cannot perceive other objects placed in the
peripheral parts of our visual field, although the
light rays they emit arrive completely at the visual
sphere of the cerebral cortex.'' Rezso« Ba¨lint
1907 (translated in Husain and Stein 1988, page
91)
35. Gorilla in the mist syndrome
• https://www.youtube.com/watch?v=wdVXco6
YDgg
• 48 times the size of the nodules.
• 83% of radiologist did not see the gorilla.
73. FAULTY REASONING
Focal lesion in L1 with subtle low T1 signal and high signal on T2/STIR: H/O thyroid ca ;
Possible atypical haemangioma but f/u to r/o met : is a fat poor haemangioma .
86. SATISFACTION OF
REPORT:ALLITERATIVE REASONING
Patient with breast cancer : looks for mets: missed small meningioma , satisfaction
of search and alliaterative reasoning : 2013, 2014, 2016, 2016, 2017, 2019 bingo 2020!
87. INACCURATE OR INCOMPLETE CLINICAL HISTORY
Breast mets: I did not check previous CT
4 years before : sarcoid
88. CORRECT REPORT FAILING TO REACH
REFERRING CLINICIAN
2016 2016 2017
Inspissated bile Wall-thickened Tumour vs.
abscess
Significant finding overlooked
because was no in the conclusion
Referred for GB polyp
89. History
82 y/o F : epigastric pain , weight loss , dysphagia : recent OGD normal, US normal.
CT: no sinister but has oesophageal cancer at OGJ : normal OGD !!
91. Individual performance
• No follow Gaussian (normal) distribution but Paretian (power) distribution
where most performers are below “average”, and thus less productive and
more likely to make mistakes than the super-performers.
92. Factors/causes of errors
• Technique or Image acquisitions errors : the
lesion is hidden due to limited or suboptimal
scanning .
• Perceptual /cognitive /interpretative
• External causes and communications
93. Perceptual /cognitive /interpretative
• Training , Experience, Intellect
• Concentration ,Perceptual skill
• Fatigue, illness , mood
• Shortcuts: viewing one place
• Failing to optimized tools : window setting
• Attempting to interpret grossly poor quality
images.
• Failure to compare to all previous images or
pertinent studies available
94. Improvement 1
• Look at the image as it belong to your best friend.
• Training
• Attending courses
• Peer review
• Discrepancy ,MDT and morbimortality meetings .
• Share diagnostic mistakes
• Perform our own interpretation before reading the
previous radiology report to avoid alliterative errors
• Pay attention to the first and last image , to the scout
view or localizer , at the corners .
95. External causes and communications.
• Heavy workloads : ER , large volume of cases , fast turnaround ,
many study in short period, numerous body part.
• Distractions : noise, chat , phone calls (increased 12% like hood of
error).Internet , whatsapp , mails .
• Overly rapid pace.
• Failure to review the voice recognition ; copy-paste errors ,
template.
• Failure to communicate regarding unexpected important finding.
• Failure of PACS server to retrieve prior exam .
• Lack of immediate online diagnostic references resources.
• Tele radiology services
96. More improvements
• Quality management (QI: Quality Improvement
)activities: Events and Learning meetings , audits,
continuing education, appraisal .
• Check-list : reduce errors of omission in a wide
variety of fields including aviation, critical care
medicine and presumably radiology. Widely used
on PET-CT; remind radiologist to take a second
look at certain aspects , areas , and features of
the images.
97. More improvements
• Structured report; standardizing, for cancer,
measurements . Thyroid US , mammography BI-RADS
, Prostate PI-RADS , CT colonography Classification ;
etc improving communication .
• Double reading : widely used in mammography
reading .
• PET-CT, computer-aided detection and Artificial
intelligence (AI): highlight neglected areas in
mamography, lung nodule detection , Ct
colonography .
• Improving individual physician factors.
102. Learning from discrepancy meeting
• 1. A reporting discrepancy occurs when a
retrospective review, or subsequent information
about patient outcome, leads to an opinion
different from that expressed in the original
report.
• Acceptance of the concept of necessary fallibility
needs to be encourage; public education can help
. Fortunately , many errors identified by
retrospective reviews are of little or no
significance to patient ; conversely , some
significant errors are never discovered (A.Brady)
103. Hindsight bias
• “Tendency for people with knowledge of the
actual outcome of an event to believe falsely
that they would have predicted the outcome
“(Berlin , L)
105. Experts
• One who knows more and more about less
and less until he knows absolutely everything
about nothing .
106. CUOTE
• IT IS SAID, THE WISE LEARN
FROM THE MISTAKES OF OTHERS,
THE SMART LEARN FROM THEIR
OWN MISTAKES, AND THE
FOOLISH LEARN FROM NEITHER.
107. REFERENCES
•
• Daniel Kahneman. Thinking, Fast and Slow. Farrar, Straus and Giroux , ISBN 978-0-347-27563-1;
2013.
• Michael A Bruno et al . Understanding and Confronting Our Mistakes: The Epidemiology of Error in
Radiology and Strategies for Error reduction .RadioGraphics 2015; 35:1668-1676.
• Common patterns in 558 diagnostic radiology errors. Jennifer J Donald and Stuart A Barnard.
Journal of Medical Imaging and Radiation Oncology 56 (2012)173-178
• Adrian P Brady .Error and discrepancy in radiology: inevitable or avoidable?. Insights Imaging
(2017)8: 171-182
• Stuart E Mirvis. Toward decreasing diagnostic errors. The Journal of Practical Medical Imaging and
Management .
• Young W Kim and Liem T Mansfield. Fool Me Twice: Delayed Diagnoses in Radiology With Emphasis
on Perpetual Errors. AJR 2014; 202: 465-470
• Adrian Brady et al. Discrepancy and Error in Radiology: Concepts, Causes and Consequences .
Ulster Med J 2012; 81(1): 3-9
• The RCR : REAL , Radiology Events and Learning . real@rcr.ac.uk
• Clinical radiology. The RCR : Standards for Learning from Discrepancy Meetings. www.rcr.ac.uk
• Christopher E. Bickle et al . Now You see It , Now you Don’t: Visual Illusions in Radiology .
RadioGraphics 2013; 33:2087-2102.
•
109. Swirl sign
85 y/o woman :Lobar haemorrhage . Almost no surrounding
edema. The basal ganglia are spared. Low density in the core
In keeping with active bleeding . Severe edema effacing
the sulci and sylvian fissure.