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Titolo:
Evaluation of a fully 3-D BPF method for small animal PET images on MIMD architectures
Autore:
Bevilacqua, A;
Indirizzi:
Univ Bologna, Dept Phys, I-40127 Bologna, Italy Univ Bologna Bologna Italy I-40127 na, Dept Phys, I-40127 Bologna, Italy Ist Nazl Fis Nucl, I-40127 Bologna, Italy Ist Nazl Fis Nucl Bologna Italy I-40127 Fis Nucl, I-40127 Bologna, Italy
Titolo Testata:
INTERNATIONAL JOURNAL OF MODERN PHYSICS C
fascicolo: 4, volume: 10, anno: 1999,
pagine: 723 - 739
SICI:
0129-1831(199906)10:4<723:EOAF3B>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
POSITRON-EMISSION-TOMOGRAPHY; ITERATIVE RECONSTRUCTION; PROCESSING APPLICATIONS; WORKSTATIONS; ALGORITHMS;
Keywords:
backprojection; BPF; MIMD; cluster of workstations; 3-D image reconstruction; PET; parallel computing; distributed computing;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Bevilacqua, A Univ Bologna, Dept Phys, Viale Berti Pichat 6-2, I-40127 Bologna, Italy Univ Bologna Viale Berti Pichat 6-2 Bologna Italy I-40127 y
Citazione:
A. Bevilacqua, "Evaluation of a fully 3-D BPF method for small animal PET images on MIMD architectures", INT J MOD C, 10(4), 1999, pp. 723-739

Abstract

Positron Emission Tomography (PET) images can be reconstructed using Fourier transform methods. This paper describes the performance of a fully 3-D Backprojection-Then-Filter (BPF) algorithm on the Gray T3E machine and on a cluster of workstations. PET reconstruction of small animals is a class of problems characterized by poor counting statistics. The low-count nature ofthese studies necessitates 3-D reconstruction in order to improve the sensitivity of the PET system: by including axially oblique Lines Of Response (LORs), the sensitivity of the system can be significantly improved by the 3-D acquisition and reconstruction. The BPF method is widely used in clinical studies because of its speed and easy implementation. Moreover, the BPF method is suitable for on-time 3-D reconstruction as it does not need any sinogram or rearranged data. In order to investigate the possibility of on-line processing, we reconstruct a phantom using the data stored in the list-mode format by the data acquisition system, We show how the intrinsically parallel nature of the BPF method makes it suitable for on-line reconstruction on a MIMD system such as the Gray T3E. Lastly, we analyze the performanceof this algorithm on a cluster of workstations.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 17:47:04