Patent ID: 8639014
Filing Date: 2014-01-28
Classification: A61B,G06T

Abstract:
1. A device to assist in extraction of a tissue sample from a subject, comprising: a computerized processor having an input supplied with a volume data set representing a plurality of acquired slice images acquired from an examination subject with an x-ray source and a radiation detector, said acquired slice images forming a stack of acquired slice images in respective slices of the subject parallel to said radiation detector; said processor being configured to identify a tissue variation in said acquired slice images and to indicate said tissue variation in the acquired slice images with a first marking; said processor being configured to execute a first image reconstruction algorithm to calculate projection images, with said first marking projected therein, from the acquired slice images with the first marking therein; said processor being configured to execute a second image reconstruction algorithm to calculate calculated slice images from said projection images that include a representation therein of the projected first marking in said projected images, as a calculated second marking that results from application of said second reconstruction algorithm to said first marking projected in said projection images; and said processor being configured to determine biopsy coordinates that coincide with said calculated second marking in the calculated slice images and to provide said biopsy coordinates at an output of said processor in a form allowing a tissue sample to be extracted from the examination subject at a location corresponding to said biopsy coordinates.