How does X-ray guided biopsy technique captures image?
This procedure is done by specially trained technologists and physicians. X-ray exposure to the breast is reduced by using computerized or digital imaging in place of film cassette, which permits the images to be viewed on a computer monitor seconds after exposure compared with the several minutes needed to develop x-ray film. The great advantage of the procedure is that a lesion can be located precisely in three dimensions by calculating its apparent change in position on angled x-ray images. The first x-ray locates the abnormality in the breast, after which two stereo views are obtained; each angled 15 degrees to either side of the initial image. The physician then marks the lesion electronically on the stereo images and the computer calculates how much the lesion’s position appears to have changed on each of the stereo views, and in this way is able to determine its exact site in three-dimensional space.
