Title :
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
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;
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
DOI :
10.1109/NSSMIC.1992.301090
