EFFECT OF REFRACTION INDEX AND LIGHT SHARING ON DETECTOR ELEMENT IDENTIFICATION FOR 2D DETECTOR MODULES IN POSITRON EMISSION TOMOGRAPHY

被引：7

作者：

TORNAI, MP

HOFFMAN, EJ

CHERRY, SR

机构：

[1] UNIV CALIF LOS ANGELES, SCH MED, DIV NUCL MED & BIOPHYS, LOS ANGELES, CA USA

[2] UNIV CALIF LOS ANGELES, SCH MED, CRUMP INST BIOL IMAGING, LOS ANGELES, CA USA

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1994年 / 348卷 / 2-3期

基金：

美国国家卫生研究院;

关键词：

D O I：

10.1016/0168-9002(94)90810-9

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Relationships among indices of refraction (n) of scintillation detectors, light sharing among discrete detector elements and accuracy of detector element identification in Positron Emission Tomography (PET) 2-D detector arrays were examined with theory and experiment. Mismatches between the index of refraction of scintillators and the glass of photomultipliers (PMT) were seen to lead to nonlinear relationships between crystal position and ratio (positioning) signals derived from PMTs. Insight is provided into the empirically derived use of light sharing among elements of the crystals in PET 2-D array detectors to compensate for this nonlinear response.

引用

页码：618 / 622

页数：5

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