Download - Mammography presentation
Mammography
Past & PresentSimilar equipments were & are still being used,
these can be called as old fashioned equipments
cone
Tube
Breast Stand
Mammography
In digital mammography screen-film system has been replaced by Detectors to give the digital images
Mammography
Present & future
CCD camera
Work station
Equipments look like this
Mammogram
These digital mammograms are surely better in resolution & details
Standard views:
45* Medio lateral Oblique (MLO view)/
Lundgren’s view
Craniocaudal view (CC view)
RCC RMLOLCC LMLO
Left Craniocaudal
Right Craniocaudal
Right Mediolateral
Oblique
Left Mediolateral Oblique
LATLeft Axillary Tail
LCV Left Cleavage
LFBLeft From Below
LLMOLeft Lateromedial
Oblique
LMLLet Mediolateral
LRLLeft Roll Lateral
LRMLeft Roll Medial
LLMLeft Lateromedial
Extended CC view / Cleopatra’s view
Extended CC view- medial or lateral rotation
True Lateral view
Axillary view
Cleavage view
Paddle compression view
Magnification view
Eklund view (for breast implants)
Extended CC view medially rotated
Extended CC view laterally rotated
Magnification view
CONVENTIONAL CC VIEW EKLUND CC VIEW
cost issues
• Digital mammography is expensive!
• Using digital technology in all women would cost >$300,000 per QALY gained
• Targeted use of digital mammography on basis of age/breast density costs ~$50,000 per QALY gained
Computer-Aided Detection
• Software program that highlights areas of concern on digital mammograms
• Uses image processing algorithms and decision threshold parameters to detect features in an image likely to be of clinical significance
• Very sensitive – detects 90% of all cancers• However, has a high rate of false positives (2-4 per study)
http://www.imagingeconomics.com/issues/articles/2005-12_04.asp
Courtesy: MIAS digital mammogram database
Instant Upgrade
• Improved signal-to-noise ratio
• Ability to magnify, change contrast, or alter the brightness.
• Near instantaneous image acquisition
Courtesy: Magee-Women’s Hospital of UPMC
Digital versus Conventional
Digital Mammographic Imaging Screening Trial
(DMIST)
• Retrospective study of 49,500 asymptomatic women• Assessed accuracy of digital vs film mammograms
RESULTS:• Digital mammography significantly more accurate in pre-
and perimenopausal women under 50 with dense breasts
• Nonsignificant trend toward improved accuracy with film mammograms in women over 65 with fatty breasts
A Brief History
- 1913 Albert Salomon, German surgeon
- 1950’s - Jacob Gershon-Cohen began to advocate widespread use of X-rays for screening
- December 2005 – RSNA brings digital mammography to US
Thank you
Talk about this session with your friends….It will add to your knowledge
