Patent Number: 6,169,779

Title: Data acquisition sequence for computed tomography scanners

Abstract: In an improved computed tomography data acquisition sequence, fan-beam or cone-beam projection data are collected in a manner which avoids the need for interpolation during reordering to parallel-beam projections. Rather than sampling all channels in a detector array as a whole at each rotation angle, the channels are sampled sequentially in a predetermined number of groups. A first group is sampled, and following a delay, subsequent groups are sampled. The delay is determined by the angular spacing of the detectors and the gantry rotation speed. The projections within a group can be sampled either simultaneously or successively. The invention is applicable to medical and material imaging systems.

Inventors: Lai; Ching-Ming (Wakefield, MA)

Assignee: Analogic Corporation

International Classification: A61B 6/03 (20060101); A61B 006/03 ()

Expiration Date: 01/02/2018