• What is Ultrasound imaging?
• Why Ultrasound?
• Common Uses
• History
• Properties of Ultrasound
• Equipment types
• How does the procedure work?
• Physics
• Benefits and Risks etc.
Learn from our Slideshare about the differences between ultrasound transducers. We also cover tips on how to treat your probes and how to select the right one.
Learn from our Slideshare about the differences between ultrasound transducers. We also cover tips on how to treat your probes and how to select the right one.
Definition of Side lobes and the principle behind its production during ultrasound imaging. Side lobes artifact and its result on image. Explanation of harmonic imaging, its production and the techniques use to eliminate fundamental frequency to produce optimal harmonic images.
An overview of Doppler Effect in Ultrasonography - the medical imaging of the body using Ultrasound.
Includes Colour Doppler, Power Doppler, Spectral Doppler, Continuous Wave Doppler, Pulsed Wave Doppler, and comparisons with other Radiographic imaging modalities.
Beginning with basic physics of ultrasound, in the presentation how an ultrasound image is constructed is tried to be revealed by investigation of the wave propagation through the tissue.
Definition of Side lobes and the principle behind its production during ultrasound imaging. Side lobes artifact and its result on image. Explanation of harmonic imaging, its production and the techniques use to eliminate fundamental frequency to produce optimal harmonic images.
An overview of Doppler Effect in Ultrasonography - the medical imaging of the body using Ultrasound.
Includes Colour Doppler, Power Doppler, Spectral Doppler, Continuous Wave Doppler, Pulsed Wave Doppler, and comparisons with other Radiographic imaging modalities.
Beginning with basic physics of ultrasound, in the presentation how an ultrasound image is constructed is tried to be revealed by investigation of the wave propagation through the tissue.
This is the lecture on transabdominal ultrasound technique for students seeking help on gynaecological ultrasound approaches. In this lecture the approaches of ultrasound and types of ultrasound are explained.
The dimensions of healthcare quality refer to various attributes or aspects that define the standard of healthcare services. These dimensions are used to evaluate, measure, and improve the quality of care provided to patients. A comprehensive understanding of these dimensions ensures that healthcare systems can address various aspects of patient care effectively and holistically. Dimensions of Healthcare Quality and Performance of care include the following; Appropriateness, Availability, Competence, Continuity, Effectiveness, Efficiency, Efficacy, Prevention, Respect and Care, Safety as well as Timeliness.
Telehealth Psychology Building Trust with Clients.pptxThe Harvest Clinic
Telehealth psychology is a digital approach that offers psychological services and mental health care to clients remotely, using technologies like video conferencing, phone calls, text messaging, and mobile apps for communication.
CRISPR-Cas9, a revolutionary gene-editing tool, holds immense potential to reshape medicine, agriculture, and our understanding of life. But like any powerful tool, it comes with ethical considerations.
Unveiling CRISPR: This naturally occurring bacterial defense system (crRNA & Cas9 protein) fights viruses. Scientists repurposed it for precise gene editing (correction, deletion, insertion) by targeting specific DNA sequences.
The Promise: CRISPR offers exciting possibilities:
Gene Therapy: Correcting genetic diseases like cystic fibrosis.
Agriculture: Engineering crops resistant to pests and harsh environments.
Research: Studying gene function to unlock new knowledge.
The Peril: Ethical concerns demand attention:
Off-target Effects: Unintended DNA edits can have unforeseen consequences.
Eugenics: Misusing CRISPR for designer babies raises social and ethical questions.
Equity: High costs could limit access to this potentially life-saving technology.
The Path Forward: Responsible development is crucial:
International Collaboration: Clear guidelines are needed for research and human trials.
Public Education: Open discussions ensure informed decisions about CRISPR.
Prioritize Safety and Ethics: Safety and ethical principles must be paramount.
CRISPR offers a powerful tool for a better future, but responsible development and addressing ethical concerns are essential. By prioritizing safety, fostering open dialogue, and ensuring equitable access, we can harness CRISPR's power for the benefit of all. (2998 characters)
Medical Technology Tackles New Health Care Demand - Research Report - March 2...pchutichetpong
M Capital Group (“MCG”) predicts that with, against, despite, and even without the global pandemic, the medical technology (MedTech) industry shows signs of continuous healthy growth, driven by smaller, faster, and cheaper devices, growing demand for home-based applications, technological innovation, strategic acquisitions, investments, and SPAC listings. MCG predicts that this should reflects itself in annual growth of over 6%, well beyond 2028.
According to Chris Mouchabhani, Managing Partner at M Capital Group, “Despite all economic scenarios that one may consider, beyond overall economic shocks, medical technology should remain one of the most promising and robust sectors over the short to medium term and well beyond 2028.”
There is a movement towards home-based care for the elderly, next generation scanning and MRI devices, wearable technology, artificial intelligence incorporation, and online connectivity. Experts also see a focus on predictive, preventive, personalized, participatory, and precision medicine, with rising levels of integration of home care and technological innovation.
The average cost of treatment has been rising across the board, creating additional financial burdens to governments, healthcare providers and insurance companies. According to MCG, cost-per-inpatient-stay in the United States alone rose on average annually by over 13% between 2014 to 2021, leading MedTech to focus research efforts on optimized medical equipment at lower price points, whilst emphasizing portability and ease of use. Namely, 46% of the 1,008 medical technology companies in the 2021 MedTech Innovator (“MTI”) database are focusing on prevention, wellness, detection, or diagnosis, signaling a clear push for preventive care to also tackle costs.
In addition, there has also been a lasting impact on consumer and medical demand for home care, supported by the pandemic. Lockdowns, closure of care facilities, and healthcare systems subjected to capacity pressure, accelerated demand away from traditional inpatient care. Now, outpatient care solutions are driving industry production, with nearly 70% of recent diagnostics start-up companies producing products in areas such as ambulatory clinics, at-home care, and self-administered diagnostics.
Defecation
Normal defecation begins with movement in the left colon, moving stool toward the anus. When stool reaches the rectum, the distention causes relaxation of the internal sphincter and an awareness of the need to defecate. At the time of defecation, the external sphincter relaxes, and abdominal muscles contract, increasing intrarectal pressure and forcing the stool out
The Valsalva maneuver exerts pressure to expel faeces through a voluntary contraction of the abdominal muscles while maintaining forced expiration against a closed airway. Patients with cardiovascular disease, glaucoma, increased intracranial pressure, or a new surgical wound are at greater risk for cardiac dysrhythmias and elevated blood pressure with the Valsalva maneuver and need to avoid straining to pass the stool.
Normal defecation is painless, resulting in passage of soft, formed stool
CONSTIPATION
Constipation is a symptom, not a disease. Improper diet, reduced fluid intake, lack of exercise, and certain medications can cause constipation. For example, patients receiving opiates for pain after surgery often require a stool softener or laxative to prevent constipation. The signs of constipation include infrequent bowel movements (less than every 3 days), difficulty passing stools, excessive straining, inability to defecate at will, and hard feaces
IMPACTION
Fecal impaction results from unrelieved constipation. It is a collection of hardened feces wedged in the rectum that a person cannot expel. In cases of severe impaction the mass extends up into the sigmoid colon.
DIARRHEA
Diarrhea is an increase in the number of stools and the passage of liquid, unformed feces. It is associated with disorders affecting digestion, absorption, and secretion in the GI tract. Intestinal contents pass through the small and large intestine too quickly to allow for the usual absorption of fluid and nutrients. Irritation within the colon results in increased mucus secretion. As a result, feces become watery, and the patient is unable to control the urge to defecate. Normally an anal bag is safe and effective in long-term treatment of patients with fecal incontinence at home, in hospice, or in the hospital. Fecal incontinence is expensive and a potentially dangerous condition in terms of contamination and risk of skin ulceration
HEMORRHOIDS
Hemorrhoids are dilated, engorged veins in the lining of the rectum. They are either external or internal.
FLATULENCE
As gas accumulates in the lumen of the intestines, the bowel wall stretches and distends (flatulence). It is a common cause of abdominal fullness, pain, and cramping. Normally intestinal gas escapes through the mouth (belching) or the anus (passing of flatus)
FECAL INCONTINENCE
Fecal incontinence is the inability to control passage of feces and gas from the anus. Incontinence harms a patient’s body image
PREPARATION AND GIVING OF LAXATIVESACCORDING TO POTTER AND PERRY,
An enema is the instillation of a solution into the rectum and sig
Antibiotic Stewardship by Anushri Srivastava.pptxAnushriSrivastav
Stewardship is the act of taking good care of something.
Antimicrobial stewardship is a coordinated program that promotes the appropriate use of antimicrobials (including antibiotics), improves patient outcomes, reduces microbial resistance, and decreases the spread of infections caused by multidrug-resistant organisms.
WHO launched the Global Antimicrobial Resistance and Use Surveillance System (GLASS) in 2015 to fill knowledge gaps and inform strategies at all levels.
ACCORDING TO apic.org,
Antimicrobial stewardship is a coordinated program that promotes the appropriate use of antimicrobials (including antibiotics), improves patient outcomes, reduces microbial resistance, and decreases the spread of infections caused by multidrug-resistant organisms.
ACCORDING TO pewtrusts.org,
Antibiotic stewardship refers to efforts in doctors’ offices, hospitals, long term care facilities, and other health care settings to ensure that antibiotics are used only when necessary and appropriate
According to WHO,
Antimicrobial stewardship is a systematic approach to educate and support health care professionals to follow evidence-based guidelines for prescribing and administering antimicrobials
In 1996, John McGowan and Dale Gerding first applied the term antimicrobial stewardship, where they suggested a causal association between antimicrobial agent use and resistance. They also focused on the urgency of large-scale controlled trials of antimicrobial-use regulation employing sophisticated epidemiologic methods, molecular typing, and precise resistance mechanism analysis.
Antimicrobial Stewardship(AMS) refers to the optimal selection, dosing, and duration of antimicrobial treatment resulting in the best clinical outcome with minimal side effects to the patients and minimal impact on subsequent resistance.
According to the 2019 report, in the US, more than 2.8 million antibiotic-resistant infections occur each year, and more than 35000 people die. In addition to this, it also mentioned that 223,900 cases of Clostridoides difficile occurred in 2017, of which 12800 people died. The report did not include viruses or parasites
VISION
Being proactive
Supporting optimal animal and human health
Exploring ways to reduce overall use of antimicrobials
Using the drugs that prevent and treat disease by killing microscopic organisms in a responsible way
GOAL
to prevent the generation and spread of antimicrobial resistance (AMR). Doing so will preserve the effectiveness of these drugs in animals and humans for years to come.
being to preserve human and animal health and the effectiveness of antimicrobial medications.
to implement a multidisciplinary approach in assembling a stewardship team to include an infectious disease physician, a clinical pharmacist with infectious diseases training, infection preventionist, and a close collaboration with the staff in the clinical microbiology laboratory
to prevent antimicrobial overuse, misuse and abuse.
to minimize the developme
Leading the Way in Nephrology: Dr. David Greene's Work with Stem Cells for Ki...Dr. David Greene Arizona
As we watch Dr. Greene's continued efforts and research in Arizona, it's clear that stem cell therapy holds a promising key to unlocking new doors in the treatment of kidney disease. With each study and trial, we step closer to a world where kidney disease is no longer a life sentence but a treatable condition, thanks to pioneers like Dr. David Greene.
Empowering ACOs: Leveraging Quality Management Tools for MIPS and BeyondHealth Catalyst
Join us as we delve into the crucial realm of quality reporting for MSSP (Medicare Shared Savings Program) Accountable Care Organizations (ACOs).
In this session, we will explore how a robust quality management solution can empower your organization to meet regulatory requirements and improve processes for MIPS reporting and internal quality programs. Learn how our MeasureAble application enables compliance and fosters continuous improvement.
ICH Guidelines for Pharmacovigilance.pdfNEHA GUPTA
The "ICH Guidelines for Pharmacovigilance" PDF provides a comprehensive overview of the International Council for Harmonisation of Technical Requirements for Pharmaceuticals for Human Use (ICH) guidelines related to pharmacovigilance. These guidelines aim to ensure that drugs are safe and effective for patients by monitoring and assessing adverse effects, ensuring proper reporting systems, and improving risk management practices. The document is essential for professionals in the pharmaceutical industry, regulatory authorities, and healthcare providers, offering detailed procedures and standards for pharmacovigilance activities to enhance drug safety and protect public health.
2. Outline
• What is Ultrasound imaging?
• Why Ultrasound?
• Common Uses
• History
• Properties of Ultrasound
• Equipment
• How does the procedure
work?
• Benefits and Risks
3. What is General Ultrasound Imaging?
• Ultrasound imaging, also called sonography,
involves exposing part of the body to high-
frequency sound waves to produce pictures of the
inside of the body.
• Ultrasound examinations do not use ionizing
radiation (as used in x-rays).
• Because ultrasound images are captured in real-
time, they can show the structure and movement
of the body's internal organs, as well as blood
flowing through blood vessels.
4. Why Ultrasound
• Ultrasound (US) is the most widely used
imaging technology worldwide
• Popular due to availability, speed, low cost,
patient-friendliness (no radiation)
• Applied in obstetrics, cardiology, inner
medicine, urology,...
• Ongoing research to improve image quality,
speed and new application areas such a intra-
operative navigation, tumour therapy,...
5. What are some common uses of the
procedure?
1.Ultrasound examinations can help to diagnose
a variety of conditions and to assess organ
damage following illness.
2.Ultrasound is used to help physicians evaluate
symptoms such as:
•pain
•swelling
•infection
•hematuria (blood in urine)
6. Ultrasound is a useful way of examining many of the body's
internal organs, including but not limited to the:
• heart and blood vessels, including the abdominal aorta and
its major branches
• Liver
• Gallbladder
• Spleen
• Pancreas
• Kidneys
• Bladder
• Uterus, ovaries, and unborn child (fetus) in pregnant
patients
• Eyes
• Thyroid and parathyroid glands
• Scrotum (testicles)
• brain in infants
• hips in infants
7. Ultrasound is also used to:
•guide procedures such as needle biopsies, in
which needles are used to extract sample cells
from an abnormal area for laboratory testing.
•image the breasts and to guide biopsy of breast
cancer
•diagnose a variety of heart conditions and to
assess damage after a heart attack or diagnose
for valvular heart disease.
8. Doppler ultrasound images can help the
physician to see and evaluate:
• blockages to blood flow (such as clots).
• narrowing of vessels (which may be caused by
plaque).
• tumors and congenital vascular malformation.
With knowledge about the speed and volume of
blood flow gained from a Doppler ultrasound
image, the physician can often determine
whether a patient is a good candidate for a
procedure like angioplasty.
9. Applications in Obstetrics
• Follow fetal development
• Detect pathologies
Two-dimensional B-mode Ultrasound image of a
fetus
13. Applications in Cardiology
•Blood flow in vessels (Doppler US)
•Contraction, Rhythm
•Blood flow in the heart (defects on wall muscle, valve
defects
•Assessment of cardiac perfusion
sti
14. Applications in Inner Medicine
•Gallstone
•Perfusion of renal
transplant
Gallstone (red arrow) within the gallbladder produces a bright
surface echo and causes a dark acoustic shadow (S)
16. Applications in Musculoskeletal System
• Visualisation of tendons, ligaments
• Investigations under movement is possible – simplifies
the detection of ruptures, obstructions…
The arrows show the large gap of the rupture Achilles
tendon
17. US image of ISS astronaut Mike Fincke's biceps tendon, where
"D" denotes the deltoid muscle and "T" is the proximal
intracapsular end of the long biceps tendon
18. Applications of Ultrasound
Elastography
US Elastography is often used to classify tumours. Malignant tumours
are 10 to 100 times stiffer than the normal soft tissue
around
20. History
• 1877: Lord Raleigh - "Theory of Sound"
• 1880: Pierre & Jacques Curie - Piezoelectric
effect
• 1914: Langevin - First Ultrasound generator
using piezoelectric effect
• 1928: Solokov - Ultrasound for material
testing
21. • 1942: Dussik - First application of Ultrasound
in medical diagnostics
• Shortly after WWII, researchers in Japan
began to explore medical diagnostic
capabilities of ultrasound.
• ... different medical applications (gall stones,
tumours)
• End of 1960's: Boom of Ultrasound in medical
diagnostics
22. Pan-Scanner - The transducer rotated in a semicircular
arc
around the patient (1957)
23. Scan converter allowed for the first time to use the
upcoming computer technology to improve US
24. • Early 1970s
– Gray scale static images of internal organs
•Mid 1970s
– Real-time imaging
•Early 1980s
– Spectral Doppler
– Color Doppler
•Also produced was a hand-held “contact”
scanner for clinical use.
27. Properties of Ultrasound
The frequencies of medical Ultrasound waves are several magnitudes higher than
the upper limit of → human hearing.
Approximate frequency ranges of
sound
28. • Although ultrasound is better known for its
diagnostic capabilities, it was initially used for
therapy rather than diagnosis.
• In the 1940s, ultrasound was used to perform
services similar to that of radiation or
chemotherapy now.
• Ultrasonic waves emit heat that can create
disruptive effects on animal tissue and
destroy malignant tissue.
29. Common Sound Frequencies
Sound Frequency
Adult audible range 15 – 20’000 Hz
Range for children's hearing Up to 40’000 Hz
Male speaking voice 100 – 1’500 Hz
Female speaking voice 150 ‘ 2’500 Hz
Standard pitch (Concert A) 44 0 Hz
Bat 50’000 – 200’000 Hz
Medical Ultrasound 2.5 – 40 MHz
Maximum sound frequency 600 MHz
Common sound frequencies and frequency
ranges
30. Physics of the method
• Longitudinal mechanical waves
• Needs elastic medium
– Transducer needs to be in contact with
skin
• Wave velocity
– Fat -> 1450 m/s
– Muscle ->1580 m/s
33. The Ultrasound Machine
A basic ultrasound machine has the following parts:
1.Transducer probe - probe that sends and receives the sound
waves
2.Central processing unit (CPU) - computer that does all of the
calculations and contains the electrical power supplies for itself
and the transducer probe
3.Transducer pulse controls - changes the amplitude, frequency
and duration of the pulses emitted from the transducer probe
4.Display - displays the image from the ultrasound data processed
by the CPU
5.Keyboard/cursor - inputs data and takes measurements from the
display
6.Disk storage device (hard, floppy, CD) - stores the acquired
images
7.Printer - prints the image from the displayed data
34. Equipment
• Ultrasound scanners consist of a console
containing a computer and electronics, a video
display screen and a transducer that is used to do
the scanning.
• The transducer is a small hand-held device that
resembles a microphone, attached to the
scanner by a cord.
• The transducer sends out inaudible high
frequency sound waves into the body and then
listens for the returning echoes from the tissues
in the body.
• The principles are similar to sonar used by boats
and submarines.
35. • The ultrasound image is immediately visible
on a video display screen that looks like a
computer or television monitor.
• The image is created based on the amplitude
(strength), frequency and time it takes for the
sound signal to return from the area of the
patient being examined to the transducer
and the type of body structure the sound
travels through.
37. How does the procedure work?
• Ultrasound imaging is based on the same
principles involved in the sonar used by bats,
ships, fishermen and the weather service.
• When a sound wave strikes an object, it bounces
back, or echoes.
• By measuring these echo waves, it is possible to
determine how far away the object is and its
size, shape and consistency (whether the object
is solid, filled with fluid, or both).
• In medicine, ultrasound is used to detect
changes in appearance of organs, tissues, and
vessels or detect abnormal masses, such as
tumors.
38. • In an ultrasound examination, a transducer both
sends the sound waves and receives/records
the echoing waves.
• When the transducer is pressed against the skin,
it directs small pulses of inaudible, high-
frequency sound waves into the body.
• As the sound waves bounce off of internal
organs, fluids and tissues, the sensitive
microphone in the transducer records tiny
changes in the sound's pitch and direction.
39. • These signature waves are instantly measured
and displayed by a computer, which in turn
creates a real-time picture on the monitor.
• One or more frames of the moving pictures are
typically captured as still images.
• Small loops of the moving “real time” images may
also be saved.
• Doppler ultrasound, a special application of
ultrasound, measures the direction and speed of
blood cells as they move through vessels.
• The movement of blood cells causes a change in
pitch of the reflected sound waves (called the
Doppler effect).
• A computer collects and processes the sounds
and creates graphs or color pictures that
represent the flow of blood through the blood
vessels.
42. How is the procedure
performed?• For most ultrasound exams, the patient is positioned
lying face-up on an examination table that can be
tilted or moved.
• A clear water-based gel is applied to the area of the
body being studied to help the transducer make
secure contact with the body and eliminate air
pockets between the transducer and the skin that can
block the sound waves from passing into your body.
• The sonographer (ultrasound technologist) or
radiologist then presses the transducer firmly against
the skin in various locations, sweeping over the area of
interest or angling the sound beam from a farther
location to better see an area of concern.
43. • Doppler sonography is performed using the same
transducer.
• When the examination is complete, the patient may be
asked to dress and wait while the ultrasound images are
reviewed.
• In some ultrasound studies, the transducer is attached to
a probe and inserted into a natural opening in the body.
These exams include:
• Transesophageal echocardiogram. The transducer is
inserted into the esophagus to obtain images of the
heart.
•Transrectal ultrasound. The transducer is inserted into a
man's rectum to view the prostate.
•Transvaginal ultrasound. The transducer is inserted into
a woman's vagina to view the uterus and ovaries.
•Most ultrasound examinations are completed within 30
minutes to an hour.
44. What are the benefits vs. risks?
Benefits
•Most ultrasound scanning is noninvasive (no needles or
injections) and is usually painless.
•Ultrasound is widely available, easy-to-use and less
expensive than other imaging methods.
•Ultrasound imaging does not use any ionizing radiation.
•Ultrasound scanning gives a clear picture of soft tissues that
do not show up well on x-ray images.
•Ultrasound is the preferred imaging modality for the
diagnosis and monitoring of pregnant women and their
unborn babies.
•Ultrasound provides real-time imaging, making it a good tool
for guiding minimally invasive procedures such as needle
biopsies and needle aspiration.
Risks
•For standard diagnostic ultrasound there are no known
harmful effects on humans.
45. Future of Ultrasound
• Improved clarity for use in cancer diagnosis
• Increased therapeutic use to correct blood clots and kidney stones
• Portability and veterinary use
• Joint and muscle treatment through cavitation
• Fusion
• ShearWave Elastography
• 4D
46. Limitations of General Ultrasound Imaging?
• Ultrasound waves are disrupted by air or gas; therefore
ultrasound is not an ideal imaging technique for air-filled
bowel or organs obscured by the bowel. In most cases,
barium exams, CT scanning, and MRI are the methods of
choice in this setting.
• Large patients are more difficult to image by ultrasound
because greater amounts of tissue attenuates (weakens)
the sound waves as they pass deeper into the body.
• Ultrasound has difficulty penetrating bone and,
therefore, can only see the outer surface of bony
structures and not what lies within (except in infants).
For visualizing internal structure of bones or certain
joints, other imaging modalities such as MRI are
typically used.