Hologic Affirm - Biopsy; Biopsy Views

Affirm Breast Biopsy Guidance System User Guide
Chapter 5: Biopsy
MAN-06411-002 Revision 003 Page 51
5: Biopsy
5.1 Biopsy Views
When performing a 2D biopsy procedure, the biopsy guidance system requires stereo
views. Stereo views are images taken at +15° and -15° angles. Collectively, these two
images are called a stereo pair. The word "stereo" in the biopsy procedures refers to the
+15° and -15° projections. The stereo pair images are used to determine the three-
dimensional (X-Y-Z) Cartesian coordinates of the region of interest.
When performing a 3D™ biopsy procedure, the biopsy guidance system requires a
tomosynthesis image set. The tomosynthesis slice is used to determine the three-
dimensional (X-Y-Z) Cartesian coordinates of the region of interest.
Chapter 5