System considerations in CCD-based x-ray imaging for digital chest radiography and digital mammography

被引：57

作者：

Hejazi, S ^{[1
]}

Trauernicht, DP ^{[1
]}

机构：

[1] EASTMAN KODAK CO,ROCHESTER,NY 14650

来源：

MEDICAL PHYSICS | 1997年 / 24卷 / 02期

关键词：

digital radiography; digital mammography; detective quantum efficiency; CCD x-ray imaging;

D O I：

10.1118/1.598072

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

System modeling is used to investigate the effect of various system parameters on the image quality in CCD-based x-ray imaging systems. The systems considered consist of a typical phosphor-based scintillating screen coupled to a CCD through lens or fiberoptic taper. Two applications, chest radiography and mammography, are analyzed. For each application typical system characteristics and operating conditions are used to determine the detective quantum efficiency (DQE) as a function of spatial frequency, optical collection efficiency, optical demagnification factor, and electronic noise. The DQE is modeled by extending the analysis for storage phosphor systems. The calculations are done for typical exposure conditions (0.25 mR for chest and 10.0 mR for mammography); however, the exposure effects are also discussed. It was found that a reasonable DQE can be obtained for both applications through each coupling approach; however, the demagnification requirements and electronic noise limitations are more stringent for the digital mammography application. (C) 1997 American Association of Physicists in Medicine.

引用

页码：287 / 297

页数：11

共 32 条

[1]

ANTONUK LE, 1992, P SOC PHOTO-OPT INS, V1651, P94, DOI 10.1117/12.59387

[2]

ANTONUK LE, 1994, P SOC PHOTO-OPT INS, V2163, P118, DOI 10.1117/12.174247

[3]

BOONE JM, 1994, P SOC PHOTO-OPT INS, V2163, P64, DOI 10.1117/12.174285

[4] Hybrid scintillators for x-ray imaging [J].

Bueno, C ;

Rairden, RL ;

Betz, RA .

PHYSICS OF MEDICAL IMAGING: MEDICAL IMAGING 1996, 1996, 2708 :469-481

[5]

Bunch P. C., 1985, Proceedings of the SPIE - The International Society for Optical Engineering, V555, P68, DOI 10.1117/12.949478

[6]

BUNCH PC, 1994, P SOC PHOTO-OPT INS, V2163, P14, DOI 10.1117/12.174255

[7]

BUNCH PC, 1992, P SOC PHOTO-OPT INS, V1653, P46, DOI 10.1117/12.59484

[8]

BUNCH PC, 1989, P SOC PHOTO-OPT INS, V1090, P67

[9]

Burgess A E, 1978, Med Phys, V5, P199, DOI 10.1118/1.594473

[10]

CHOI WY, 1994, P SOC PHOTO-OPT INS, V2163, P150, DOI 10.1117/12.174250

← 1 2 3 4 →