title: Monte Carlo simulation-based feasibility study of novel indirect flat panel detector system for removing scatter radiation.
abstract: The purpose of this study is to investigate the feasibility of a novel indirect flat panel detector (FPD) system for removing scatter radiation. The substrate layer of our FPD system has a Pb net-like structure that matches the ineffective area and blocks the scatter radiation such that only primary X-rays reach the effective area on a thin-film transistor. To evaluate the performance of the proposed system, we used Monte Carlo simulations to derive the scatter fraction and contrast. The scatter fraction of the proposed system is lower than that of a parallel grid system, and the contrast is superior to that of a system without a grid. If the structure of the proposed FPD system is optimized with respect to the specifications of a specific detector, the purpose of the examination, and the energy range used, the FPD can be useful in diagnostic radiology.
authors.affiliation: Department of Health Sciences, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan.
authors.forename: Yongsu
authors.initials: Y
authors.lastname: Yoon
authors.affiliation: Department of Health Sciences, Faculty of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan.
authors.forename: Junji
authors.initials: J
authors.lastname: Morishita
authors.affiliation: Radiation Safety Section, Korea Institute of Radiological and Medical Sciences, Seoul 139-706, Republic of Korea.
authors.forename: MinSeok
authors.initials: M
authors.lastname: Park
authors.affiliation: Division of Medical Radiation, Center for Disease Prevention, Korea Centers for Disease Control & Prevention, Chungchongbuk-do 363-700, Republic of Korea; School of Health and Environmental Science, Korea University, Seoul 136-703, Republic of Korea.
authors.forename: Hyunji
authors.initials: H
authors.lastname: Kim
authors.affiliation: School of Health and Environmental Science, Korea University, Seoul 136-703, Republic of Korea.
authors.forename: Kihyun
authors.initials: K
authors.lastname: Kim
authors.affiliation: School of Health and Environmental Science, Korea University, Seoul 136-703, Republic of Korea. Electronic address: minbogun@korea.ac.kr.
authors.forename: Jungmin
authors.initials: J
authors.lastname: Kim
mesh_terms: D016477:Artifacts; D004867:Equipment Design; D005240:Feasibility Studies; D006801:Humans; D007854:Lead; D009010:Monte Carlo Method; D019047:Phantoms, Imaging; D019904:Polymethyl Methacrylate / Q000737:chemistry; D011859:Radiography / Q000295:instrumentation* / Q000379:methods*; D011871:Radiology / Q000295:instrumentation* / Q000379:methods*; D012542:Scattering, Radiation; D014965:X-Rays
chemical_list: D007854:Lead; D019904:Polymethyl Methacrylate
keywords: Indirect flat panel detector; Monte Carlo simulation; Scatter radiation