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Proceedings Paper

Development and evaluation of a digital radiography system using a large-area flat-panel detector
Author(s): Katsumi Suzuki; Shigeyuki Ikeda; Ken Ishikawa; Gen Iinuma; Satoshi Ogasawara; Noriyuki Moriyama; Yasutaka Konno
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Paper Abstract

A new DR system using a large-area flat panel detector (FPD) with a 40 by 30 cm active area and a 194 micrometers pixel pitch, has been developed to compare with a conventional image intensifier and charge-coupled device camera type DR system. After measuring basic characteristics of the new DR system such as signal-to-noise ratio, modulation transfer function, and detective quantum efficiency, we applied the FPD to a Gastro-Intestinal study with contrast media, and discussed its potential for clinical use with a medical doctor. In radiography mode, the new DR system with a large-are FPD has superior image quality compared with the conventional I.I.- CCD camera type DR system because of high SNR and DQE. In fluoroscopy mode, the SNR of the new DR system at the exposure range of over 2(mu) R/frame is similar with the conventional I.I.-CCD camera type DR system. As a result, we considered that new DR system with a large-area FPD could be applied to a clinical study replacing an I.I.-CCD camera type. In the evaluation using various clinical images taken with the new DR system by a medical doctor, the new DR system with a large-are FPD performed sufficiently for a GI study.

Paper Details

Date Published: 3 May 2002
PDF: 8 pages
Proc. SPIE 4682, Medical Imaging 2002: Physics of Medical Imaging, (3 May 2002); doi: 10.1117/12.465577
Show Author Affiliations
Katsumi Suzuki, Hitachi Medical Corp. (Japan)
Shigeyuki Ikeda, Hitachi Medical Corp. (Japan)
Ken Ishikawa, Hitachi Medical Corp. (Japan)
Gen Iinuma, National Cancer Ctr. Hospital (Japan)
Satoshi Ogasawara, National Cancer Ctr. Hospital (Japan)
Noriyuki Moriyama, National Cancer Ctr. Hospital (Japan)
Yasutaka Konno, Hitachi Central Research Lab. (Japan)

Published in SPIE Proceedings Vol. 4682:
Medical Imaging 2002: Physics of Medical Imaging
Larry E. Antonuk; Martin Joel Yaffe, Editor(s)

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