Mammography is an x-ray exam used to detect breast cancer. Modern mammography machines use low doses of radiation that are considered safe. Screening mammograms are used to check women without symptoms, while diagnostic mammograms examine potential abnormalities. Mammograms produce images of breast tissue that radiologists analyze for signs of cancer such as masses or microcalcifications. While mammography is an important cancer screening tool, it has limitations like false negatives and overdiagnosis. Newer digital mammography techniques aim to improve cancer detection rates.
I have include all the contain about mammography like introduction,principle,anatomy,general views ,mammography physics (x-ray tube, housing,filter ,collimator and generator) and different advance technology about mammography.
Hope it will help your queries.
Thank you....!!
Definition of Mammography
Types of Mammography
Indications of Mammography
Contraindications of Mammography
Mammography Views
Mammogram
Mammography Unit
Additional Views of Mammography
I have include all the contain about mammography like introduction,principle,anatomy,general views ,mammography physics (x-ray tube, housing,filter ,collimator and generator) and different advance technology about mammography.
Hope it will help your queries.
Thank you....!!
Definition of Mammography
Types of Mammography
Indications of Mammography
Contraindications of Mammography
Mammography Views
Mammogram
Mammography Unit
Additional Views of Mammography
Mammography and recent advances dr avinashAvinashDahatre
mammography and recent advances includes some physics regarding x ray mammography with different views taken. then some recent advances in mammography like optical mammo and dual energy etc refrence taken from Yochum rowe essential of skeletal radiology, christensen radiology.
A comprehensive study about new and upcoming modalities in imaging and screening of breast lesions with description about every new modalities with their advantages and pitfalls.
Mammography and recent advances dr avinashAvinashDahatre
mammography and recent advances includes some physics regarding x ray mammography with different views taken. then some recent advances in mammography like optical mammo and dual energy etc refrence taken from Yochum rowe essential of skeletal radiology, christensen radiology.
A comprehensive study about new and upcoming modalities in imaging and screening of breast lesions with description about every new modalities with their advantages and pitfalls.
A mammogram is an x-ray picture of the breast. It can be used to check for breast cancer in women who have no signs or symptoms of the disease. It can also be used if you have a lump or other sign of breast cancer. Screening mammography is the type of mammogram that checks you when you have no symptoms.
Slide contains all the necessary sub topics and detail explanation about mammography
1. PRESENTING BY: SUMREEN KOSAR, ASSISTANT PROFESSOR DESH BHAGAT UNIVERSITY PUNJAB
2. over view: Introduction to mammography. Anatomy. Breast cancer. Imaging modalities. Role of a mammographic technologist. Mammographic views. Reporting system. Additional information for a mammography technologist. Artifacts. Male mammography . Conclusion.
Here in these slides we have discuss about the Mammogram Screening with the help of which one can get the X-ray image of the breast to detect the breast cancer and to check it without having symptoms.
Why go for Early Breast Cancer Screening?Anita Arora
In cases of breast cancer there are numerous inevitable factors that lead to its onset like aging, genetic disorders and gender. Being a female is a big risk factor as the presence of estrogen and progesterone can result in breast cancer cells growth. In such cases early detection and breast cancer screening goes a long way in ensuring that the patient can undergo a successful treatment.
- Video recording of this lecture in English language: https://youtu.be/kqbnxVAZs-0
- Video recording of this lecture in Arabic language: https://youtu.be/SINlygW1Mpc
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• Assessing risk and mitigating harm from adverse health narratives in communities, health workforce and health system
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Rasamanikya is a excellent preparation in the field of Rasashastra, it is used in various Kushtha Roga, Shwasa, Vicharchika, Bhagandara, Vatarakta, and Phiranga Roga. In this article Preparation& Comparative analytical profile for both Formulationon i.e Rasamanikya prepared by Kushmanda swarasa & Churnodhaka Shodita Haratala. The study aims to provide insights into the comparative efficacy and analytical aspects of these formulations for enhanced therapeutic outcomes.
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Title: Sense of Taste
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the structure and function of taste buds.
Describe the relationship between the taste threshold and taste index of common substances.
Explain the chemical basis and signal transduction of taste perception for each type of primary taste sensation.
Recognize different abnormalities of taste perception and their causes.
Key Topics:
Significance of Taste Sensation:
Differentiation between pleasant and harmful food
Influence on behavior
Selection of food based on metabolic needs
Receptors of Taste:
Taste buds on the tongue
Influence of sense of smell, texture of food, and pain stimulation (e.g., by pepper)
Primary and Secondary Taste Sensations:
Primary taste sensations: Sweet, Sour, Salty, Bitter, Umami
Chemical basis and signal transduction mechanisms for each taste
Taste Threshold and Index:
Taste threshold values for Sweet (sucrose), Salty (NaCl), Sour (HCl), and Bitter (Quinine)
Taste index relationship: Inversely proportional to taste threshold
Taste Blindness:
Inability to taste certain substances, particularly thiourea compounds
Example: Phenylthiocarbamide
Structure and Function of Taste Buds:
Composition: Epithelial cells, Sustentacular/Supporting cells, Taste cells, Basal cells
Features: Taste pores, Taste hairs/microvilli, and Taste nerve fibers
Location of Taste Buds:
Found in papillae of the tongue (Fungiform, Circumvallate, Foliate)
Also present on the palate, tonsillar pillars, epiglottis, and proximal esophagus
Mechanism of Taste Stimulation:
Interaction of taste substances with receptors on microvilli
Signal transduction pathways for Umami, Sweet, Bitter, Sour, and Salty tastes
Taste Sensitivity and Adaptation:
Decrease in sensitivity with age
Rapid adaptation of taste sensation
Role of Saliva in Taste:
Dissolution of tastants to reach receptors
Washing away the stimulus
Taste Preferences and Aversions:
Mechanisms behind taste preference and aversion
Influence of receptors and neural pathways
Impact of Sensory Nerve Damage:
Degeneration of taste buds if the sensory nerve fiber is cut
Abnormalities of Taste Detection:
Conditions: Ageusia, Hypogeusia, Dysgeusia (parageusia)
Causes: Nerve damage, neurological disorders, infections, poor oral hygiene, adverse drug effects, deficiencies, aging, tobacco use, altered neurotransmitter levels
Neurotransmitters and Taste Threshold:
Effects of serotonin (5-HT) and norepinephrine (NE) on taste sensitivity
Supertasters:
25% of the population with heightened sensitivity to taste, especially bitterness
Increased number of fungiform papillae
These lecture slides, by Dr Sidra Arshad, offer a quick overview of the physiological basis of a normal electrocardiogram.
Learning objectives:
1. Define an electrocardiogram (ECG) and electrocardiography
2. Describe how dipoles generated by the heart produce the waveforms of the ECG
3. Describe the components of a normal electrocardiogram of a typical bipolar lead (limb II)
4. Differentiate between intervals and segments
5. Enlist some common indications for obtaining an ECG
6. Describe the flow of current around the heart during the cardiac cycle
7. Discuss the placement and polarity of the leads of electrocardiograph
8. Describe the normal electrocardiograms recorded from the limb leads and explain the physiological basis of the different records that are obtained
9. Define mean electrical vector (axis) of the heart and give the normal range
10. Define the mean QRS vector
11. Describe the axes of leads (hexagonal reference system)
12. Comprehend the vectorial analysis of the normal ECG
13. Determine the mean electrical axis of the ventricular QRS and appreciate the mean axis deviation
14. Explain the concepts of current of injury, J point, and their significance
Study Resources:
1. Chapter 11, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 9, Human Physiology - From Cells to Systems, Lauralee Sherwood, 9th edition
3. Chapter 29, Ganong’s Review of Medical Physiology, 26th edition
4. Electrocardiogram, StatPearls - https://www.ncbi.nlm.nih.gov/books/NBK549803/
5. ECG in Medical Practice by ABM Abdullah, 4th edition
6. Chapter 3, Cardiology Explained, https://www.ncbi.nlm.nih.gov/books/NBK2214/
7. ECG Basics, http://www.nataliescasebook.com/tag/e-c-g-basics
2. What is a Mammogram
• A mammogram is an x-ray exam of
the breast to detect and evaluate any
change in the breast
2
3. History
X-rays were first used to examine breast tissue by the
German surgeon ALBERT SALOMON about a century ago
• Modern mammography came in to existence since the late
1960s
• Technology has advanced and today’s machine is different
even from those of 1980s and 1990s
3
4. Mammography machine
• Today’s mammography machine expose the breast to much
less radiation
• X-rays do not go through tissue as easily as those used for
routine chest x-ray or x-rays of extremity
4
5. Radiation from mammogram
• Modern machine is safe and uses the lowest dose of radiation
possible.
• If a woman with breast cancer is treated with radiation, she will get
several thousand rads.
• If she has yearly mammogram starting at age of 40 and continues
until 90 she will get total of 20-40 rads.
• Benefits of mammography outweigh any possible harm from the
radiation exposure
5
7. Screening mammogram
• Mammogram of the breast for the women who have no sign
or symptom of breast cancer, usually with two x-ray views
• Finding breast cancer early, greatly improves a woman’s
chance for successful treatment
7
8. Diagnostic mammogram
• X-ray of the breast for a woman with breast problem like lump
or nipple discharge or an abnormal area found in screening
by taking spot view or magnification view
8
9. What diagnostic mammogram does ?
• It may reveal that an area that looked abnormal on screening
is actually NORMAL—routine checkup
• It could reveal that an area of abnormal tissue probably is
NOT CANCER but radiologist may not ready to say it normal
based on these x-rays--- re-check up in 4-6 months
• The results could also suggest that a biopsy is needed to find
out if the abnormal area is CANCER
9
10. Types of mammogram machine
• Screen - film units
• Full - field digital mammography units (better in woman
younger than 50 or with dense breast tissue)
10
11. How is mammogram done
Breast is briefly compressed between
2 plates attached to the mammogram
machine–
an adjustable plastic plate on top and
a fixed plate on bottom which holds
the x-ray film or the digital detector
that makes the image
11
12. Typical views
• For screening:
Cranio- caudal view (CC)
Medio-lateral oblique(MLO)
• For diagnostic:
CC MLO – lateromedial (from side towards center of chest) –
mediolateral (from the center of the chest out) - Spot compression
view
12
17. How to read mammogram
• Its challenging must be interpreted by radiologist
• Must to compare with previous mammogram
17
18. Changes in breast tissue
• Calcification:
macrocalcification & microcalcification
• Mass
• Breast density
18
19. Calcification (macro)
• Due to changes in breast caused by aging of breast arteries,
old injuries or inflammation
• Coarse/ large Calcium deposit
• Seen in 1 0f 10 women under 50 and about half over 50
• These deposits are related to Noncancerous condition and do
not require biopsy
19
20. Calcification (micro)
• Tiny specks of calcium
• If seen it’s a matter of concern though not necessarily it is
cancer or does not mean biopsy
20
21. Mass
• Mass with or without calcification
• Noncancerous mass:
Cystic – fluid filled sacs/ simple cyst
Solid – Fibro adenoma
• Complex or mixed mass: suspect cancer needs Fine Needle
Aspiration Cytology or biopsy Breast ultrasound is complementary
21
22. Breast density
Density is based on:
• how much fibrous and glandular tissue
• how is the distribution within breast tissue
• how is breast made up of fatty tissue
• Dense breasts are not abnormal but they are linked to higher
risk of breast cancer
22
23. Findings on mammogram
• Primary signs of breast cancer may include spiculated
masses or clustered pleomorphic microcalcification
• Secondary signs of breast cancer may include asymmetrical
tissue density, skin thickening or retraction or focal distortion
of tissue
23
25. Impression
• Overall assessment of the radiological findings often includes
a classification of the mammogram using the BI-RADS
system developed by the American College Of
Radiology(ACR)
25
28. Recommendation
• No action necessary
• A six month follow up mammogram
• Spot views
• Breast ultrasound
• Biopsy etc
28
29. Limitations of mammography
• Breast cancer screening is the best way to find cancer early
but finding cancer early does not always reduce a woman’s
chance of dying from breast cancer
• Detecting breast cancer early may not help prolong the life of
a woman who has other kind of serious or life threatening
health problem like CCF, ESRD, COPD…
29
30. False negative results
• A false-negative mammogram appears normal even though
with breast cancer
• It occurs more often among younger women usually had
dense breast
• False-negative results can delay treatment and promote a
false sense of security for the woman Overall, screening
mammogram miss about 1 in 5 breast cancers
30
31. False positive results
• A false- positive mammogram looks abnormal but no cancer
is actually present
• It requires diagnostic mammogram, ultrasound, MRI or even
biopsy
• It is common in younger woman, have dense breast, have
had breast biopsy or cancer in family or are taking estrogen
31
32. Tomosynthesis
• Newer technique
• Basically it is an extension of digital mammogram
• Breast is compressed once, machine takes many low dose x-
rays as it moves over the breast in an arc, images can then be
combined into a 3-dimensional picture
32
34. Mammogram report
• Patient information
• Clinical history
• Procedure: Screening or Diagnostic
• Findings: mass, calcification, asymmetry architectural distortion or
associated lesion
• Comparison to previous study/Any U/S
• Impression/ Final assessment
• Management Recommendation
34
35. Expert quote
“Before you go to get a mammogram, make sure you know whether you're there
for a screening mammogram or a diagnostic mammogram. If you're there for
your annual screening mammogram, you may not meet with the radiologist or
get your results the same day. Sometimes, there's an advantage to this. Getting
your results later often means having two doctors look at your mammogram. A
lump, pain, nipple discharge, breast implants, or breast surgery automatically
make your mammogram diagnostic. If you have a lump, or other symptoms, tell
the mammography center so they know what they're dealing with.”
-- Susan Greenstein Orel, M.D
35
36. Male mammography
• 1300 men get breast cancer per year – 1/3 die
• Most are 60 years or older
• Nearly all are primary tumors
Symptoms include:
– Nipple retraction
– Crusting
– Discharge
– Ulceration 36
38. Gynecomastia
• It is a benign male breast (non-cancerous) condition
• Some men who have prominent breasts, or uneven breasts,
often feel some embarrassment about their body image.
• This condition can also cause emotional conflict over sexual
identity.
38