Patent ID: 6735271
Filing Date: 2004-05-11
Classification: A61B,G01N,G06T,G21K

Abstract:
In a scanning electron beam computed tomographic system in which an electron beam is scanned across a target with a constant velocity to emit a fan beam of X-rays some of which X-rays may pass through an area defined by a reconstruction radius and having an object therein to be detected by a detector array, a method of eliminating cone beam error, comprising the following steps:(a) configuring and disposing said target and said detector array such that active regions of said target and said detector array are always diametrically opposite from each other; wherein step (a) includes providing a planar target and a planar detector array and tilting said target and said detector array relative to a transverse axis that may include a vertical axis of said system to approximate a true helix configuration.