Title :
Measurement of Two-Dimensional Photon Beam Distributions Using a Fiber-Optic Radiation Sensor for Small Field Radiation Therapy
Author :
Lee, Bongsoo ; Jang, Kyoung Won ; Cho, Dong Hyun ; Yoo, Wook Jae ; Shin, Sang Hun ; Kim, Hyung Sik ; Yi, Jeong Han ; Kim, Sin ; Cho, Hyosung ; Park, Byung Gi ; Moon, Joo Hyun ; Kim, Siyong
Author_Institution :
Sch. of Biomed. Eng., Konkuk Univ., Chungju
Abstract :
In this study, we fabricated a fiber-optic radiation sensor with an organic scintillator to measure the high-energy photon beam from a clinical linear accelerator, and a two-dimensional fiber-optic sensor array to measure high-resolution and real-time dose distributions for small field radiotherapy dosimetry. The scintillating lights generated from each organic sensor probe embedded and arrayed in a water phantom are guided by 10 m plastic optical fibers to the light-measuring device. Two-dimensional photon beam distributions in a water phantom were measured for photon beams with different energies and field sizes. Also, percent depth dose curves for 6 and 15 MV photon beams were obtained.
Keywords :
dosimetry; fibre optic sensors; linear accelerators; phantoms; photodetectors; radiation therapy; solid scintillation detectors; 2D photon beam distributions; clinical linear accelerator; fiber-optic radiation sensor; plastic optical fibers; radiation therapy; radiotherapy dosimetry; real-time dose distributions; scintillator; water phantom; Biomedical applications of radiation; Dosimetry; Imaging phantoms; Linear accelerators; Optical arrays; Optical fiber devices; Optical fiber sensors; Optoelectronic and photonic sensors; Particle beams; Sensor arrays; Fiber-optic sensor; organic scintillator; photon beam; plastic optical fiber;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2008.2002579
