title: Simultaneous measurements of pure scintillation and Cerenkov signals in an integrated fiber-optic dosimeter for electron beam therapy dosimetry.
abstract: For real-time dosimetry in electron beam therapy, an integrated fiber-optic dosimeter (FOD) is developed using a water-equivalent dosimeter probe, four transmitting optical fibers, and a multichannel light-measuring device. The dosimeter probe is composed of two inner sensors, a scintillation sensor and a Cerenkov sensor, and each sensor has two different channels. Accordingly, we measured four separate light signals from each channel in the dosimeter probe, simultaneously, and then obtained the scintillation and Cerenkov signals using a subtraction method. To evaluate the performance of the integrated FOD, we measured the light signals according to the irradiation angle of the electron beam, the depth variation of the solid water phantom, and the electron beam energy. In conclusion, we demonstrated that the pure scintillation and Cerenkov signals obtained by an integrated FOD system based on a subtraction method can be effectively used for calibrating the conditions of high-energy electron beams in radiotherapy.
authors: Wook Jae
authors: WJ
authors: Yoo
authors: Sang Hun
authors: SH
authors: Shin
authors: Dayeong
authors: D
authors: Jeon
authors: Seunghan
authors: S
authors: Hong
authors: Seon Geun
authors: SG
authors: Kim
authors: Hyeok In
authors: HI
authors: Sim
authors: Kyoung Won
authors: KW
authors: Jang
authors: Seunghyun
authors: S
authors: Cho
authors: Bongsoo
authors: B
authors: Lee
mesh_terms: D004583:Electrons; D004867:Equipment Design; D005336:Fiber Optic Technology / Q000295:instrumentation*; D006801:Humans; D055100:Optical Fibers; D019047:Phantoms, Imaging; D011874:Radiometry / Q000295:instrumentation*; D011879:Radiotherapy Dosage; D012588:Scintillation Counting / Q000295:instrumentation*