A compact planar positron imaging system

被引：55

作者：

Uchida, H ^{[1
]}

Okamoto, T ^{[1
]}

Ohmura, T ^{[1
]}

Shimizu, K ^{[1
]}

Satoh, N ^{[1
]}

Koike, T ^{[1
]}

Yamashita, T ^{[1
]}

机构：

[1] Hamamatsu Photon KK, Res Grp 5, Shizuoka 4348601, Japan

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2004年 / 516卷 / 2-3期

关键词：

positron imaging device; planar imaging; PS-PMT;

D O I：

10.1016/j.nima.2003.08.165

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A planar imaging system for positron-emitting radiotracers was developed and its physical performance was evaluated. The new device consists of two opposing planar detectors, each having 4 (columns) x 6 (rows) detect or units, and each unit composed of 10 x 10 arrays of 2 x 2 x 20 mm(3) pillars of Bi(4)Gey(3)O(12) (BGO) scintillators and a metal-packaged position-sensitive photomultiplier tube. The system is very compact and has a simple structure that allows versatile positioning of detectors in the horizontal or vertical mode. Focal plane images are constructed from coincidence data collected by opposing planar detectors. The system provides good quality images even in a short period of time or with low tracer activity. Spatial resolutions of 1.6-2.1 mm FWHM were achieved for the entire field of view. The sensitivity was 107 cps/kBq/ml measured in a uniform flat phantom. In this study, the capability of the new system was demonstrated by the imaging of radiotracer distribution in rats and plants. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：564 / 574

页数：11

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