LESION DETECTABILITY CONSIDERATIONS FOR AN OPTICALLY-COUPLED CCD X-RAY-IMAGING SYSTEM

被引：13

作者：

LIU, H ^{[1
]}

KARELLAS, A ^{[1
]}

MOORE, SC ^{[1
]}

HARRIS, LJ ^{[1
]}

DORSI, CJ ^{[1
]}

机构：

[1] VET ADM MED CTR W ROXBURY,DEPT NUCL MED,BOSTON,MA 02132

来源：

IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 1994年 / 41卷 / 04期

关键词：

D O I：

10.1109/23.322939

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：

This project was aimed at investigating the lesion detectability of an optically-coupled CCD x-ray imaging system. The quasi-ideal observer signal-to-noise ratio (also called lesion-matched filter signal-to-noise ratio) was calculated for various clinical applications. This analysis differs from that of previous investigations in that we have analyzed jointly the effect of quantum noise and additive noise; we have also analyzed the combined effect of the contrast transfer property and the resolving power of the system. Numerical calculations were performed to determine lesion detectability and contrast-detail curves under mammographic and other clinical conditions. A standard mammographic phantom and a contrast-detail phantom were imaged to validate the calculation. The results demonstrate that the lesion detectability of a well designed optically-coupled CCD can be comparable to that of the state-of-the-art screen-film system under the same conditions.

引用

页码：1506 / 1509

页数：4

共 7 条

[1]

[Anonymous], 1983, MED IMAGING SYSTEMS

[2]

HASEGAWWA BH, 1990, PHYSICS MED XRAY IMA

[3] CHARGE-COUPLED DEVICE DETECTOR - PERFORMANCE CONSIDERATIONS AND POTENTIAL FOR SMALL-FIELD MAMMOGRAPHIC IMAGING APPLICATIONS [J].