Direct-conversion flat-panel X-ray image sensors for digital radiography

被引：174

作者：

Kasap, SO ^{[1
]}

Rowlands, JA

机构：

[1] Univ Saskatchewan, Dept Elect Engn, Saskatoon, SK S7N 5A9, Canada

[2] Univ Toronto, Dept Med Imaging, Toronto, ON M4N 3N5, Canada

[3] Univ Toronto, Dept Med Biophys, Toronto, ON M4N 3N5, Canada

来源：

PROCEEDINGS OF THE IEEE | 2002年 / 90卷 / 04期

基金：

加拿大自然科学与工程研究理事会;

关键词：

direct-conversion detector; flat panel; sensor; X-ray image detector;

D O I：

10.1109/JPROC.2002.1002529

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Advances in active-matrix array flat panels for displays over the last decade have lead to the development of flat-panel X-ray image detectors. Recent flat-panel detectors have shown image quality exceeding that of X-ray film/screen cassettes. They can also permit the instantaneous capture, readout, and display of digital X-ray images and, hence, enable the clinical transition to digital radiography. There are two general approaches to flat panel detector technology: 1) direct and 2) indirect conversion. The present paper outlines the operating principles for direct-conversion detectors based on the use of photoconductors. It formulates and reviews the required X-ray photoconductor properties for such applications and examines to what extent potential materials fulfil these requirements. The quantum efficiency, X-ray sensitivity; noise, and detective quantum efficiency factors are discussed with reference to current and potential large area X-ray photoconductors.

引用

页码：591 / 604

页数：14

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