mammography (copy)

recommended intervals for breast self examination and mammography

monthly for self examination beginning at 20, annually for physician physical exam beginning at 35, 1 baseline under 40, annually after 40 unless low risk, then biannually

diagnostic mammography

performed on pt w symptoms or elevated risks

screening mammography

performed on asymptomatic pt to detect unsuspected cancer

advantages of compression

improves spatial res, contrast res, and lower pt rad dose

image receptor characteristics

grid, compression plate, aec, and breast support

mammographer quality control duties

repeat rate does not exceed 1%, radiologist, medical physicist, and mammographer

x ray mam. target materials

molybdenum and phodium

high transmission cellular grid

designed specifically for mam. reduces scatter in two directions to be more focused

sensitivity

ability of a test to correctly identify those w the disease; highest=MRI

specificity

ability of the test to correctly identify those w/o disease; highest=mammogram

target composition for mammogram

tungsten. molybdenum, or rhodium

DMIST- digital mammography imaging study trial

demonstrated contrast res is more important than spatial res for diagnostic efficiency

three principle tissues of breast

fibrous, glandular, and adipose

tomosynthesis

3D mammography allows for a better view without obstruction from overlapping tissue structures