Application of information theory to the evaluation of X-ray imaging scintillators.

被引：0

作者：

Cavouras, D ^{[1
]}

Kandarakis, I ^{[1
]}

Ventouras, E ^{[1
]}

Panayiotakis, G ^{[1
]}

Nomicos, C ^{[1
]}

机构：

[1] TEI Athens, Dept Med Instrum Technol, Athens 12210, Greece

来源：

MEDICON 2001: PROCEEDINGS OF THE INTERNATIONAL FEDERATION FOR MEDICAL & BIOLOGICAL ENGINEERING, PTS 1 AND 2 | 2001年

关键词：

D O I：

暂无

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

An experimental method based on the light emission properties of scintillators has been developed to evaluate the quality of medical images. Information entropy (IE) and information capacity (IC) of scintillating screens were evaluated as functions of emitted optical fluence and incident x-ray fluence. Scintillator screens with various coating thickness were prepared in laboratory, and were irradiated by x-rays. Experimental data were obtained in both transmission and reflection modes of measurement (light emission from both screen sides). Results showed that IE and IC decrease slightly with scintillator thickness and depend strongly on the intrinsic absorption and optical properties of the scintillator materials.

引用

页码：519 / 522

页数：4

共 5 条

[1] An experimental method to determine the effective luminescence efficiency of scintillator-photodetector combinations used in X-ray medical imaging systems
Cavouras, D
Kandarakis, I
Bakas, A
Triantis, D
Nomicos, CD
Panayiotakis, GS
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[4] Europium-activated phosphors for use in X-ray detectors of medical imaging systems
Kandarakis, I
Cavouras, D
Panayiotakis, GS
Triantis, D
Nomicos, CD
[J]. EUROPEAN RADIOLOGY, 1998, 8 (02) : 313 - 318
[5] A method for determining the information capacity of x-ray imaging scintillator detectors by means of luminescence and modulation transfer function measurements
Kandarakis, I
Cavouras, D
Kanellopoulos, E
Nomicos, CD
Panayiotakis, GS
[J]. MEDICAL & BIOLOGICAL ENGINEERING & COMPUTING, 1999, 37 (01) : 25 - 30

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