Real-time dosimeter using organic photodiode for IVR

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K08709
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Medical Physics and Radiological Technology
• Research Institution: National Institutes for Quantum and Radiological Science and Technology
• Principal Investigator: Nishikido Fumihiko 国立研究開発法人量子科学技術研究開発機構, 放射線医学総合研究所 計測・線量評価部, 研究員(任常) (60367117)
• Co-Investigator(Renkei-kenkyūsha): MORITAKE Takashi 産業医科大学, 産業生態科学研究所, 准教授 (50450432) ; TAKADA Eiji 富山高等専門学校, 電気制御システム工学科, 教授 (00270885)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 有機半導体 / 有機フォトダイオード / IVR / リアルタイム線量計

Outline of Final Research Achievements

Interventional radiology (IVR) is a medical subspecialty of radiology to realize image-guided surgical procedures using imaging modalities, such as x-ray fluoroscopy. However, skin injuries by prolonged x-ray exposure during the procedure have been reported. Therefore, real-time monitoring of skin dose is desired in clinical sites for reduction of excessive x-ray exposure. We developed a real-time dose distribution monitoring system using an organic photodiode directly fabricated on a plastic scintillator for the IVR. The organic photodiode is mainly composed of organic materials, which has good transparency for X-ray. In evaluation with a small animal CT, we obtained the sufficient signals from the OPD in real-time with 1 s interval. In addition, the OPD detector have a transparency enough to be used in the IVR procedure.

Free Research Field

放射線計測