A light-guidance system to be used for CT-guided biopsy.

Abstract
A light-guidance system that uses intersecting He-Ne laser beams to provide precise guidance for biopsy approaches from any direction (including compound angles) during CT [computed tomography]-guided biopsy of the [human] chest and abdomen. Interactive software provides visualization of the proposed path, indicates the segment of that path that will pass through each section, and displays the settings for the apparatus.