Work

A system calibration and fast iterative reconstruction method for next-generation SPECT imagers

Year: 2011

Type: conference-paper

Abstract: Recently, high-resolution gamma cameras have been developed with detectors containing >; 105-106elements. SPECT imagers based on these detectors usually also have a large number of voxel bins and therefore face memory storage issues for the system matrix when performing fast tomographic reconstructions using iterative algorithms. To address these issues, we have developed a method that parameterizes the detector response to a point source and generates the system matrix on the fly during MLEM or OSEM on graphics hardware. The calibration method, interpolation of coefficient data, and reconstruction results are presented in the context of a recently commissioned small-animal SPECT imager, called FastSPECT III.

Source: 2006 IEEE Nuclear Science Symposium Conference Record

DOI: 10.1109/nssmic.2011.6153666

Authors: Brian W. Miller, Roel Van Holen, Harrison H. Barrett, Lars R. Furenlid

Institutions: University of Arizona, Ghent University

Language: English

Topic: Medical Imaging Techniques and Applications

Subfield: Radiology, Nuclear Medicine and Imaging

Field: Medicine

Domain: Health Sciences

Open Access status: green

Funder: National Institute of Biomedical Imaging and Bioengineering

Awards: G1774695383, Center for Gamma-Ray Imaging