Fast implementation of 3D PET reconstruction using vector and parallel programming techniques

Author

Guerrero, T.M. ; Cherry, S.R. ; Dahlbom, M. ; Ricci, A.R. ; Hoffman, E.J.

Author_Institution

Crump Inst. of Biol. Imaging, California Univ. Sch. of Med., Los Angeles, CA, USA

fYear

1992

fDate

25-31 Oct 1992

Firstpage

969

Abstract

The authors discuss methods for reducing the computation time for 3-D PET (positron emission tomography) reconstruction through the use of fast computer hardware, vector and parallel programming techniques, and algorithm optimization. The strengths and weaknesses of i860 microprocessor based workstation accelerator boards are investigated in implementations of 3-D PET reconstruction. One key issue in achieving speed on the SuperCard 2 has been minimizing memory accesses, and eliminating redundant calculations through approximations and look-up tables. This has allowed the calculation time to decrease from 20 minutes on the MicroVax 3200 to 146 seconds on a dual i860 system

Keywords

computerised tomography; image reconstruction; medical image processing; parallel programming; radioisotope scanning and imaging; vector processor systems; 146 s; 20 min; 3D PET reconstruction; MicroVax 3200; SuperCard 2; algorithm optimization; computation time reduction method; i860 microprocessor based workstation accelerator boards; look-up tables; medical diagnostic imaging; nuclear medicine; parallel programming; Biomedical imaging; Concurrent computing; Data acquisition; Hardware; Image reconstruction; Nuclear medicine; Parallel programming; Pixel; Positron emission tomography; Vectors;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium and Medical Imaging Conference, 1992., Conference Record of the 1992 IEEE

Conference_Location

Orlando, FL

Print_ISBN

0-7803-0884-0

Type

conf

DOI

10.1109/NSSMIC.1992.301090

Filename

301090