الفهرس 
Anatomy of the breastOnly 14 pages are availabe for public view
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Abstract
Summary
Breast lesions are a wide spectrum of heterogonous diseases,
although benign lesions are the vast majority yet malignant lesions are of
the most concern, in Egypt, breast cancer is the most common cancer
among women, representing 37 % of all female cancers.
We compared in our study between digital mammography and
Tomosynthesis in the detection of breast lesions, which is very
challenging especially in those females with dense breasts, and still the
most challenging, is detection of breast cancer as early as possible.
Digital mammography is a two-dimensional imaging modality and
currently the golden role in detecting breast lesions, especially cancers at
an early stage and is the only screening modality proved to reduce
mortality and morbidity. However, it has several weakness and draw
backs which affect this role such as tissue overlapping and unclear lesion
margins, attributed to the clutter of signals from tissues above and below
the lesions and because the signal detected is dependent upon the total
attenuation of all the tissues above the location.
On the other hand, Tomosynthesis is a three-dimensional imaging
that reduces tissue overlap, its technology depends on acquisition of
multiple projection exposures by digital detector from X-Ray tube which
moves over a limited arc angle, these projection images are reconstructed
using specific algorithms and presented as a series of images for the
entire breast which are read at workstation. Image acquisition of both
modalities is the same; two views are acquired CC and MLO, yet in DM
tube is fixed and in Tomo tube moves over an angle.