CdZnTe detectors for small field of view positron emission tomographic imaging

被引：25

作者：

Drezet, Arnaud ^{[1
]}

Monnet, Olivier ^{[1
]}

Mathy, Francoise ^{[1
]}

Montemont, Guillaume ^{[1
]}

Verger, Loick ^{[1
]}

机构：

[1] CEA, LETI, MINATEC, F-38054 Grenoble, France

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2007年 / 571卷 / 1-2期

关键词：

CdZnTe; positron emission tomography; timing resolution; depth of interaction measurement;

D O I：

10.1016/j.nima.2006.10.292

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We report the timing performance between two 16 x 20 X 0.9 mm(3) cadmium zinc telluride (CZT) detectors equipped with a specific orthogonal electrode geometry (16 anodes and 5 cathodes with 1 and 4 mm pitch, respectively) and a dedicated electronic setup for Positron Emission Tomography (PET) application. The measured coincidence times reach 2.6 ns full-width at half-maximum (FWHM) for a 500 V bias voltage and 300 keV energy threshold. Subsequently, a simulation study was carried out to assess the spatial and efficiency performances of these detectors, which allow the depth of interaction (DOT) measurement and so limit the parallax error. Preliminary results show that the proposed design could reach a better homogeneity of the spatial resolution across the field of view than what is achieved with the standard PET scintillation. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：465 / 470

页数：6

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