title: Evaluation of basic characteristics of a semiconductor detector for personal radiation dose monitoring.
abstract: Real-time radiation dose management is important because staff members working in interventional radiology may be exposed to relatively high doses of primary and scattered radiation from the body of a patient. In this study, we investigated the dependence of energy and dose rate of the commercially available semiconductor detector named Pocket Geiger (POKEGA) for personal monitoring in diagnostic X-rays. In the energy-dependence study, a suitable metal filter and the threshold level were examined for energy compensation using a Monte Carlo calculation code. Moreover, the energy dependence of the POKEGA with an optimal metal filter was compared with that of commercially available active personal dosimeters (APDs). With an aluminum filter, the difference of the ratio of the absorbed dose of silicon to that of air was ±7% for a tube voltage of 70-110 kV and a cutoff energy of 23 keV in the calculation. The energy response of the APDs, except the PDM-122B-SHC and the POKEGA, met the required JIS standard from 50 to 110 kV. In the dose rate-dependence study, a high linearity was observed up to 2.2 mGy h-1using the POKEGA with an aluminum filter.
authors: Department of Health Sciences, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Fukuoka, 812-8582, Japan. kento.terasaki@gmail.com.
authors: Kento
authors: K
authors: Terasaki
authors: Department of Health Sciences, Faculty of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Fukuoka, 812-8582, Japan.
authors: Toshioh
authors: T
authors: Fujibuchi
authors: Division of Radiology, Department of Medical Technology, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Fukuoka, 812-8582, Japan.
authors: Hiroo
authors: H
authors: Murazaki
authors: Division of Radiology, Department of Medical Technology, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Fukuoka, 812-8582, Japan.
authors: Taku
authors: T
authors: Kuramoto
authors: Division of Radiology, Department of Medical Technology, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Fukuoka, 812-8582, Japan.
authors: Yoshiyuki
authors: Y
authors: Umezu
authors: Graduate School of Information Systems, The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu-shi, Tokyo, 182-8585, Japan.|Yaguchi Electric Corporation, Kaemon 301, Kanomata, Ishinomaki, Miyagi, 986-1111, Japan.
authors: Yang
authors: Y
authors: Ishigaki
authors: Department of Applied Physics and Physico-Informatics, Keio University, 3-14-1 Hiyoshi, Kouhoku-ku, Yokohama, Kanagawa, 223-8522, Japan.
authors: Yoshinori
authors: Y
authors: Matsumoto
mesh_terms: D019047:Phantoms, Imaging; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000295:instrumentation*; D012666:Semiconductors
keywords: Energy compensation filter; Interventional radiology; Monte Carlo calculation; Personal monitoring; Semiconductor detector