Detection characterization of Cd1-xZnxTe detectors for x-ray linear arrays

被引：1

作者：

Giakos, GC ^{[1
]}

Vedantham, S ^{[1
]}

Suryanarayanan, S ^{[1
]}

Chowdhury, S ^{[1
]}

Guntupalli, R ^{[1
]}

Odogba, J ^{[1
]}

Dasgupta, A ^{[1
]}

Pillai, B ^{[1
]}

Endorf, RJ ^{[1
]}

机构：

[1] Univ Akron, Dept Biomed Engn, Lab Med Imaging Devices Detectors & Biosensors, Akron, OH 44325 USA

来源：

PHYSICS OF MEDICAL IMAGING | 1998年 / 3336卷

关键词：

D O I：

10.1117/12.317056

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

In this paper, the detected signal-to-noise was measured and related to the tube current (mA) setting. The line spread function amplitude (LSF) dependence on drift distance of a 3mm thick detector, for 100 kVp, 100 mA, with an applied electric field of 50V/mm, and 100 V/mm, were measured. In addition, the dependence of the modulation transfer function (MTF(f)) of the x-ray detector system on the applied bias voltage has been experimentally determined. The experimental setup, although is not offered for large field-of-view imaging applications, offers capabilities for feasibility studies, research and evaluation of the temporal response and noise characteristics of a Cd1-xZnxTe detector, for fast digital radiographic and CT applications. The experimental results indicate that Cd1-xZnxTe detectors exhibit both a high signal-to-noise ratio and linear response, as well as a good spatial resolution within the diagnostic energy range. tor system improves both with increasing applied bias voltage and decreasing detector thickness. A study is in process aimed at improving the spatial resolution of the x-ray system by suitable optimization of the system geometry as well as the system temporal response.

引用

页码：537 / 545

页数：9