DEVELOPMENT OF A 2,048X2,048-PIXEL IMAGE INTENSIFIER-TV DIGITAL RADIOGRAPHY SYSTEM - BASIC IMAGING PROPERTIES AND CLINICAL-APPLICATION

被引：7

作者：

TAKAHASHI, M ^{[1
]}

UENO, S ^{[1
]}

TSUCHIGAME, T ^{[1
]}

HIGASHIDA, Y ^{[1
]}

HIRATA, Y ^{[1
]}

MORIBE, N ^{[1
]}

TAKADA, T ^{[1
]}

KAMIYA, M ^{[1
]}

KOIKE, K ^{[1
]}

机构：

[1] HITACHI MED CORP,CHIBA,JAPAN

来源：

INVESTIGATIVE RADIOLOGY | 1992年 / 27卷 / 11期

关键词：

DIGITAL RADIOGRAPHY; GASTROINTESTINAL TRACT; II-TV SYSTEM; 2,048-PIXEL MATRIX DIGITAL IMAGING;

D O I：

10.1097/00004424-199211000-00003

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：

RATIONALE AND OBJECTIVES. A 2,048 x 2,048-pixel matrix image intensifier (II)-TV digital radiography system has been developed. Potential clinical applications of this new II-TV system were investigated. METHODS. Basic imaging properties were assessed with clinical applications to gastrointestinal (GI) tract and chest examinations. RESULTS. Basic imaging properties showed improvement of modulation transfer functions (MTFs) from the 1,024 x 1,024- to the 2,048 x 2,048-pixel matrix and approximated the screen-film system at low spatial frequencies. Receiver operating characteristic (ROC) curves of simulated linear shadows improved similarly. Clinical applications showed that the image quality of the 2,048 x 2,048-pixel matrix was comparable with that of the screen-film system for upper GI and chest radiography, but the image quality of the screen-film system was better for the lower GI tract. CONCLUSIONS. The authors' II-TV digital radiography system is clinically applicable to gastrointestinal and chest examinations.

引用

页码：898 / 907

页数：10

共 23 条

[1]

DOI K, 1986, RADIOLOGY, V161, P513, DOI 10.1148/radiology.161.2.3763924

[2] DIGITAL RADIOGRAPHY OF THE GASTROINTESTINAL-TRACT [J].