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Rad 112 unit 1

Rad 112 unit 1 mammo

QuestionAnswer
breast cancer 2nd leading cause of death, 1 in 8 women diagnosed, 32% of cancer in women
mammo recomendations 50+ every year; 40-49 every 2 yr
MQSA mammography quality standards act; fed. legislation; 10/1/94
Breast extends from T2-T7
Tail axillary prolongation, extends from upper lat base
apex nipple
base post. surface overlies pectoralis major muscle
coopers ligaments support breast, extend from post fascia to skin
Internal Anat 15-20 lobes->Lobules(structured units)->alveoli->ducts (acini, draining ducts)->ampulla(dialated portion of duct)->nipple
glandular tissue include ducts, absorbs more radiation
fibrous tissue connective tissue, dense
Fibroglandular tissue most consistent throughout life, dense, little fat, 15-30 yo, childless women 30+, pregnant/lactating
Fibrofatty tissue avg. density, 50% fat 50% fibroglandular, 30-50 yo, women 3+ preg.
Fatty Tissue Min. density, 50+ yo, postmenopausal, atrophic, child and male breasts
Tissue included when postitioning inframammory fold to pectoralis muscle
Low kvp 25-30
MLO mediolateral oblique
CC craniocaudal
prominent heel effect cathode close to base of breast
FS size .3-.1mm
Filter molybdenum rhodium target (momo)
barylinium material used instesd of glass
2 funct. of compression 25-45 lbs of force; decrease thickness of breast and decrease oid
Magnification method for calcifications, .1mm focal spot, 1.5-2x enlargement, oid increases
implants radiopaque, compression difficulat and aec not possible
breast carcinoma malignant growth of epithelial cells
fibroadenoma benign tumor, smooth mass
fibrocystic disease benign fluid filled cysts
pagets disease fluid, blood, crust around/on nipple, can indicate cancer
ax axillary
xccl lat. exaggerated cc
ml mediolateral (for localization)
marker always on lat side for mammography
MLO demonstrates the most mammary tissue, lat aspect of breast and tail
Created by: sandonblaise
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