Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Accurate image reconstruction using DOI information and its implications for the development of compact PET systems
Autore:
Kao, CM; Pan, XC; Chen, CT;
Indirizzi:
Univ Chicago, Dept Radiol, Chicago, IL 60637 USA Univ Chicago Chicago IL USA 60637 ago, Dept Radiol, Chicago, IL 60637 USA
Titolo Testata:
IEEE TRANSACTIONS ON NUCLEAR SCIENCE
fascicolo: 4, volume: 47, anno: 2000,
parte:, 2
pagine: 1551 - 1560
SICI:
0018-9499(200008)47:4<1551:AIRUDI>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
POSITRON EMISSION TOMOGRAPHY; ANIMAL PET; DETECTOR MODULE; MULTICRYSTAL DETECTORS; CONVEX PROJECTIONS; HIGH-SENSITIVITY; RESOLUTION; DEPTH; RESTORATION; ALGORITHMS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
50
Recensione:
Indirizzi per estratti:
Indirizzo: Kao, CM Univ Chicago, Dept Radiol, Chicago, IL 60637 USA Univ Chicago Chicago IL USA 60637 t Radiol, Chicago, IL 60637 USA
Citazione:
C.M. Kao et al., "Accurate image reconstruction using DOI information and its implications for the development of compact PET systems", IEEE NUCL S, 47(4), 2000, pp. 1551-1560

Abstract

We study the use of a computationally efficient sinogram restoration (SR) approach for reconstruction of 2D PET data acquired by systems with depth-of-interaction capability. When the effects of scatter and randoms are ignored, our preliminary results show that the proposed approach can yield images of excellent resolution uniformity for a hypothetical compact system witha field-of-view (FOV) as large as 98% of the detector-ring size. In comparison with images generated by the conventional rebinning approach, the resolution uniformity across the FOV in the image produced by incorporating SR is improved by a factor of about 10, and the spatial resolution at the edgeof the FOV is improved by a factor of about 2.2 Moreover, the SR approach produces better intensity recovery and source positioning. Integration of the use of DOI detectors and SR reconstruction may thus provide a new way for developing compact PET systems. For a given FOV, such a compact system can produce images of quality better than those obtained by a conventional system that employs a detector ring approximately 50% larger than the compactsystem. The much reduced detector-ring size of the compact system can greatly reduce production cost, improve image resolution and resolution uniformity, and increase system sensitivity.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/03/20 alle ore 03:00:19