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Titolo:
PERFORMANCE CHARACTERIZATION OF LARGE-AREA BAF2-TMAE DETECTORS FOR USE IN A WHOLE-BODY CLINICAL PET CAMERA
Autore:
VISVIKIS D; OTT RJ; WELLS K; FLOWER MA; STEPHENSON R; BATEMAN JE; CONNOLLY J;
Indirizzi:
ROYAL MARSDEN NHS TRUST,INST CANC RES,JOINT DEPT PHYS SUTTON SM2 5PT SURREY ENGLAND RUTHERFORD APPLETON LAB DIDCOT OX11 0QX OXON ENGLAND
Titolo Testata:
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment
fascicolo: 1-3, volume: 392, anno: 1997,
pagine: 414 - 420
SICI:
0168-9002(1997)392:1-3<414:PCOLBD>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
CHAMBER;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
12
Recensione:
Indirizzi per estratti:
Citazione:
D. Visvikis et al., "PERFORMANCE CHARACTERIZATION OF LARGE-AREA BAF2-TMAE DETECTORS FOR USE IN A WHOLE-BODY CLINICAL PET CAMERA", Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 392(1-3), 1997, pp. 414-420

Abstract

The first of two large area detectors which form part of a new whole body positron scanner has been fully characterised and a performance assessment has been completed. The detector consists of an array of crystals coupled to a large area, low pressure multiwire chamber filled with tetrakis-(dimethylamino)-ethylene (TMAE) gas. A complete optimisation has been carried out in the operation of the chamber in order to establish optimal levels of stability and performance. Under the optimised operational conditions the detector exhibits an efficiency of similar to 25%, with a time and position resolution of 3.5 ns (FWHM) and 6.5 mm (FWHM) respectively. A Monte Carlo simulation of the complete dual headed PET camera has been used to assess the expected image quality in terms of contrast and signal to noise ratio. The simulation has been also used to establish the effect of utilising crystal slabs and asupport frame to cover the active area of each detector in comparisonwith a single sheet of BaF2. The results demonstrate that the use of crystal tiles results in a small increase in the background noise, notsignificantly compromising the image quality.

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Documento generato il 25/11/20 alle ore 07:07:55