Tomosynthesis-Improved Breast Cancer Screening and Diagnosis
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Abstract
Since its introduction in 2000, digital mammography has become an accepted standard of care in breast cancer screening and has paved the way for a new groundbreaking technology- breast tomosynthesis. With breast tomosynthesis, images of a breast are acquired at multiple angles during a short scan. The individual images are then reconstructed into a series of thin, high-resolution slices typically 1mm thick, which can be displayed individually or in a dynamic ciné mode. A tomosynthesis data set virtually elimi- nates detection challenges associated with overlapping structures in the breast, which is the primary drawback of conventional two dimensional (2D) mammography. Figure 1 illustrates the basic principle. As is known from standard computed tomography (CT) body imaging, three dimensional cross sectional slices often improve visibility through the reduction of superimposed structures.
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