한국의학물리학회:학술대회논문집 (Proceedings of the Korean Society of Medical Physics Conference)
- 한국의학물리학회 2002년도 Proceedings
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- Pages.385-388
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- 2002
Measurement of Imaging Property of Flat-Panel Detector
- Matsumoto, Masao (School of Allied Health Sciences, Faculty of Medicine, Osaka University, Suita, Osaka) ;
- Suekane, Kouji (School of Allied Health Sciences, Faculty of Medicine, Osaka University, Suita, Osaka) ;
- Maeda, Kouji (School of Allied Health Sciences, Faculty of Medicine, Osaka University, Suita, Osaka) ;
- Ogata, Yuji (School of Allied Health Sciences, Faculty of Medicine, Osaka University, Suita, Osaka) ;
- Inamura, Kiyonari (School of Allied Health Sciences, Faculty of Medicine, Osaka University, Suita, Osaka) ;
- Kanai, Kouzo (R&D Sec. Osaka Branch, Toyo Medic Co. Ltd.) ;
- Kanamori, Hitoshi (Prof. Emeritus, Kyoto Institute of Technology)
- 발행 : 2002.09.01
초록
We measured and evaluated digital, pre-sampling and overall imaging properties (characteristic curves, Modulation Transfer Function (MTF), Wiener spectra (WS), Noise Equivalent Quanta (NEQ) and Detective Quantum Efficiency (DQE)) for the direct type and indirect type of Flat-Panel Detector (FPD). First, the digital and overall characteristic curves of the both types of FPD had more wide dynamic range than that of the S/F system. Second, the pre-sampling and overall MTF of the direct-type FPD were superior to those of the indirect-type FPD. Third, for identical exposures, the digital and overall WS of the direct-type FPD were similar or worse than those of the indirect-type FPD, and for larger exposure, the digital WS of the both types of FPD were smaller, but overall WS of the both types of FPD were larger. Fourth, the digital and overall NEQ and DQE of the direct-type FPD were worse than both NEQ and DQE of the indirect-type FPD at lower spatial frequencies, but were better at higher spatial frequencies.