TY - JOUR
T1 - Basic imaging properties of an indirect flat-panel detector system employing irradiation side sampling (ISS) technology for chest radiography
T2 - Comparison with a computed radiographic system
AU - Tanaka, Nobukazu
AU - Yano, Yuki
AU - Yabuuchi, Hidetake
AU - Akasaka, Tsutomu
AU - Sasaki, Masayuki
AU - Ohki, Masafumi
AU - Morishita, Junji
PY - 2013/1
Y1 - 2013/1
N2 - The image quality and potential usefulness for patient skin-dose reduction of a newly developed flat-panel detector (FPD) system employing irradiation side sampling (ISS) were investigated and compared to a conventional computed radiography (CR) system. We used the X-ray beam quality of RQA 9 as noted in the standard evaluation method by the International Electrotechnical Commission 62220-1 to evaluate the image quality of the detector for chest radiography. The presampled modulation transfer function (MTF) of the ISS-FPD system was slightly higher than that of the CR system in the horizontal direction at more than 2.2 cycles/mm. However, the presampled MTF of the ISS-FPD system was slightly lower than that of the CR system in the vertical direction. The Wiener spectrum of the ISS-FPD system showed a 50-65 % lesser noise level than that of the CR system under the same exposure condition. The detective quantum efficiency of the ISS-FPD system was at least twice as great as that of the CR system. We conclude that the ISS-FPD system has the potential to reduce the patient skin dose compared to a conventional CR system for chest radiography.
AB - The image quality and potential usefulness for patient skin-dose reduction of a newly developed flat-panel detector (FPD) system employing irradiation side sampling (ISS) were investigated and compared to a conventional computed radiography (CR) system. We used the X-ray beam quality of RQA 9 as noted in the standard evaluation method by the International Electrotechnical Commission 62220-1 to evaluate the image quality of the detector for chest radiography. The presampled modulation transfer function (MTF) of the ISS-FPD system was slightly higher than that of the CR system in the horizontal direction at more than 2.2 cycles/mm. However, the presampled MTF of the ISS-FPD system was slightly lower than that of the CR system in the vertical direction. The Wiener spectrum of the ISS-FPD system showed a 50-65 % lesser noise level than that of the CR system under the same exposure condition. The detective quantum efficiency of the ISS-FPD system was at least twice as great as that of the CR system. We conclude that the ISS-FPD system has the potential to reduce the patient skin dose compared to a conventional CR system for chest radiography.
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U2 - 10.1007/s12194-012-0184-z
DO - 10.1007/s12194-012-0184-z
M3 - Article
C2 - 23143711
AN - SCOPUS:84873138139
SN - 1865-0333
VL - 6
SP - 162
EP - 169
JO - Radiological physics and technology
JF - Radiological physics and technology
IS - 1
ER -