ONLINE PARALLEL-PROCESSING FOR A ROTATING POSITRON TOMOGRAPH OPERATEDIN 3D MODE

Authors
COMTAT C DOBINSON RW EGGER M SCHEURER AH DEJONG FF JOSEPH C MOREL C VANNIEUWENBORG AJE PAGES JL TOWNSEND DW WILLIAMS MI
Citation
C. Comtat et al., ONLINE PARALLEL-PROCESSING FOR A ROTATING POSITRON TOMOGRAPH OPERATEDIN 3D MODE, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 351(2-3), 1994, pp. 527-533
Citations number
20
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
Journal title
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment → ACNP
ISSN journal
01689002
Volume
351
Issue
2-3
Year of publication
1994
Pages
527 - 533
Database
ISI
SICI code
0168-9002(1994)351:2-3<527:OPFARP>2.0.ZU;2-U
Abstract
The design and implementation of an on-line parallel processing system for the rotating positron tomograph RPT-1 are presented. A unique pro perty of this scanner is the fact that complete projections become ava ilable at regular intervals during data acquisition. This was exploite d in such a way as to start reconstruction before the end of data acqu isition. Readout of the data from the scanner, data normalisation and image reconstruction are pipelined in separate processing stages. A tr ansputer-based multiprocessor network and real-time operating system p rovide a parallel environment which can evolve and scale to match the needs of a rotating positron tomograph.