TY - JOUR
T1 - Full-field digital mammography with amorphous silicon-based flat- panel detector
T2 - physical imaging characteristics and signal detection
AU - Ideguchi, Tadamitsu
AU - Higashida, Yoshiharu
AU - Himuro, Kazuhiko
AU - Ohki, Masafumi
AU - Nakamura, Satoru
AU - Yoshida, Akira
AU - Takagi, Rie
AU - Hatano, Hirohide
AU - Kuwahara, Rie
AU - Toyonaga, Makiko
AU - Tanaka, Isamu
AU - Toyofuku, Fukai
N1 - Copyright:
This record is sourced from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
PY - 2004/3
Y1 - 2004/3
N2 - The physical characteristics of a clinical amorphous silicon-based flat-panel imager for full-field digital mammography were investigated. Pre-sampled modulation transfer functions (MTF) were measured by using a slit method. Noise power spectra were determined for different input exposures by fast Fourier transform. The MTFs of full-field digital mammography systems showed significantly higher values than those of the computed radiography (CR) system. The full-field digital mammography system showed a lower noise level than that of the CR system under the same exposure conditions. Contrast detail analysis has been performed to compare the detectability of the full-field digital mammography system with that of the screen-film (Min-R 2000/Min-R 2000) system. The average contrast-detail curves of digital and film images were obtained from the results of observation. Image quality figures (IQF) were also calculated from the individual observer performance tests. The results indicated that the digital contrast-detail curves and IQF, on average, are superior to those of the screen-film system.
AB - The physical characteristics of a clinical amorphous silicon-based flat-panel imager for full-field digital mammography were investigated. Pre-sampled modulation transfer functions (MTF) were measured by using a slit method. Noise power spectra were determined for different input exposures by fast Fourier transform. The MTFs of full-field digital mammography systems showed significantly higher values than those of the computed radiography (CR) system. The full-field digital mammography system showed a lower noise level than that of the CR system under the same exposure conditions. Contrast detail analysis has been performed to compare the detectability of the full-field digital mammography system with that of the screen-film (Min-R 2000/Min-R 2000) system. The average contrast-detail curves of digital and film images were obtained from the results of observation. Image quality figures (IQF) were also calculated from the individual observer performance tests. The results indicated that the digital contrast-detail curves and IQF, on average, are superior to those of the screen-film system.
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U2 - 10.6009/jjrt.KJ00000922344
DO - 10.6009/jjrt.KJ00000922344
M3 - Article
C2 - 15131510
AN - SCOPUS:3843108056
SN - 0369-4305
VL - 60
SP - 399
EP - 405
JO - Nippon Hoshasen Gijutsu Gakkai zasshi
JF - Nippon Hoshasen Gijutsu Gakkai zasshi
IS - 3
ER -