Comparison of Axial Performance of Cone-Beam Reconstruction Algorithms for Off-Center Flat-Panel Imaging with a SPECT System

Author

Konate, Souleymane ; Pretorius, P. Hendrik ; Mukherjee, Joyeeta Mitra ; Dey, Joyoni ; Ritacco, Alan ; Glick, Stephen ; O´Connor, J. Michael ; Shao, Lingxiong ; Wang, Jiong ; Feng, Bing ; King, Michael A.

Author_Institution

Med. Sch., Univ. of Massachusetts, Worcester, MA, USA

fYear

2010

fDate

Oct. 30 2010-Nov. 6 2010

Firstpage

3483

Lastpage

3491

Abstract

In this paper, using Defrise Phantoms, we present our investigations of the axial limitations of an analytical cone-beam reconstruction algorithm (FDK), and the iterative ordered-subset transmission reconstruction (OSTR) iterative algorithm, for an axially extended version of the Philips Brightview XCT cone beam CT (CBCT) geometry. Simulations were preformed for head size and body size Defrise Phantoms of different axial dimensions to investigate limitations on axial extent as a function of these. OSTR yielded overall better axial performance than FDK. It may be possible to reconstruct a larger axial extent for brain studies; however, patients with larger body sizes pose more of a problem.

Keywords

geometry; image reconstruction; medical image processing; phantoms; single photon emission computed tomography; Philips Brightview XCT cone beam CT geometry; SPECT system; analytical cone-beam reconstruction algorithm; axial performance; brain; defrise phantoms; iterative ordered-subset transmission reconstruction iterative algorithm; off-center flat-panel imaging; Detectors; Head; Image reconstruction; Phantoms; Reconstruction algorithms;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record (NSS/MIC), 2010 IEEE

Conference_Location

Knoxville, TN

ISSN

1095-7863

Print_ISBN

978-1-4244-9106-3

Type

conf

DOI

10.1109/NSSMIC.2010.5874454

Filename

5874454