TY - JOUR
T1 - Effect of readout direction in the edge profile on the modulation transfer function of computed radiographic systems by use of the edge method
AU - Tanaka, Nobukazu
AU - Morishita, Junji
AU - Tsuda, Norisato
AU - Ohki, Masafumi
N1 - Funding Information:
Acknowledgments We are grateful to Drs. Tadamitsu Ideguchi, Department of Radiological Science, Faculty of Health Sciences, Junshin Gakuen University; Hiroshi Tanaka, Takefumi Nagata, and Norihiro Omae, FUJIFILM Corporation; and Norimasa Matsuya and Masashi Masuda, FUJIFILM Medical Co., Ltd., for useful discussions; and to Akinobu Takahama, Konica Minolta Healthcare Co., Ltd., for providing a photostimulable phosphor plate. The authors used software for measurements of the MTF that was distributed by the 1st seminar for digital radiography of the Japanese Society of Radiological Technology. We thank the editorial assistant of this journal, Mrs. Elisabeth Lanzl, for providing initial and final polishing of our manuscript in improving the readability and English expressions. This manuscript was partly supported by Akiyoshi Ohtsuka Fellowship of the Japanese Society of Radiological Technology for improvement in English expression of a draft version of the manuscript.
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2013/7
Y1 - 2013/7
N2 - We investigated the effect of the readout direction of the edge profile obtained by the edge method on the presampled modulation transfer function (MTF) in various computed radiographic (CR) systems. There were no differences in the MTFs derived from two edge profiles in the sub-scanning direction of four CR systems used in this study. On the other hand, the MTFs measured at a readout direction from the low (edge) to the high (direct exposure) exposure region were higher than those measured at a readout direction from the high to the low exposure region in the laser-beam scanning direction for three of the four CR systems. Although this phenomenon depends on the CR system, it is important to understand and indicate both MTFs at the two edge profiles in the laser-beam scanning direction for accurate assessment of the resolution property.
AB - We investigated the effect of the readout direction of the edge profile obtained by the edge method on the presampled modulation transfer function (MTF) in various computed radiographic (CR) systems. There were no differences in the MTFs derived from two edge profiles in the sub-scanning direction of four CR systems used in this study. On the other hand, the MTFs measured at a readout direction from the low (edge) to the high (direct exposure) exposure region were higher than those measured at a readout direction from the high to the low exposure region in the laser-beam scanning direction for three of the four CR systems. Although this phenomenon depends on the CR system, it is important to understand and indicate both MTFs at the two edge profiles in the laser-beam scanning direction for accurate assessment of the resolution property.
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U2 - 10.1007/s12194-013-0222-5
DO - 10.1007/s12194-013-0222-5
M3 - Article
C2 - 23733485
AN - SCOPUS:84880301786
SN - 1865-0333
VL - 6
SP - 474
EP - 479
JO - Radiological Physics and Technology
JF - Radiological Physics and Technology
IS - 2
ER -