Cone-beam pseudo-lambda tomography

Abstract

In this paper, for the first time we define the concept of 3D pseudo-lambda tomography based on the 3D Calderon operator, and formulate an approximate local reconstruction algorithm for cone-beam data collected along an arbitrary scanning curve. The main idea is to rewrite the filtering operator in an exact filtered-backprojection reconstruction formula as a local projection. Simulation using the 3D differentiable Shepp-Logan phantom is performed to demonstrate the utility of this new technique. © 2007 IOP Publishing Ltd.