title: Feasibility of Ultra-Thin Fiber-Optic Dosimeters for Radiotherapy Dosimetry.
abstract: In this study, prototype ultra-thin fiber-optic dosimeters were fabricated using organic scintillators, wavelength shifting fibers, and plastic optical fibers. The sensor probes of the ultra-thin fiber-optic dosimeters consisted of very thin organic scintillators with thicknesses of 100, 150 and 200 μm. These types of sensors cannot only be used to measure skin or surface doses but also provide depth dose measurements with high spatial resolution. With the ultra-thin fiber-optic dosimeters, surface doses for gamma rays generated from a Co-60 therapy machine were measured. Additionally, percentage depth doses in the build-up regions were obtained by using the ultra-thin fiber-optic dosimeters, and the results were compared with those of external beam therapy films and a conventional fiber-optic dosimeter.
authors.affiliation: School of Biomedical Engineering, College of Biomedical &amp; Health Science, BK21 Plus Research Institute of Biomedical Engineering, Konkuk University, 322 Danwol-dong, Chungju-si, Chungcheongbuk-do 380-701, Korea. bslee@kku.ac.kr.
authors.forename: Bongsoo
authors.initials: B
authors.lastname: Lee
authors.affiliation: School of Biomedical Engineering, College of Biomedical &amp; Health Science, BK21 Plus Research Institute of Biomedical Engineering, Konkuk University, 322 Danwol-dong, Chungju-si, Chungcheongbuk-do 380-701, Korea. lucky7568@naver.com.
authors.forename: Guwon
authors.initials: G
authors.lastname: Kwon
authors.affiliation: School of Biomedical Engineering, College of Biomedical &amp; Health Science, BK21 Plus Research Institute of Biomedical Engineering, Konkuk University, 322 Danwol-dong, Chungju-si, Chungcheongbuk-do 380-701, Korea. shshin9431@gmail.com.
authors.forename: Sang Hun
authors.initials: SH
authors.lastname: Shin
authors.affiliation: School of Biomedical Engineering, College of Biomedical &amp; Health Science, BK21 Plus Research Institute of Biomedical Engineering, Konkuk University, 322 Danwol-dong, Chungju-si, Chungcheongbuk-do 380-701, Korea. kimzgo@naver.com.
authors.forename: Jaeseok
authors.initials: J
authors.lastname: Kim
authors.affiliation: School of Biomedical Engineering, College of Biomedical &amp; Health Science, BK21 Plus Research Institute of Biomedical Engineering, Konkuk University, 322 Danwol-dong, Chungju-si, Chungcheongbuk-do 380-701, Korea. wonzip@naver.com.
authors.forename: Wook Jae
authors.initials: WJ
authors.lastname: Yoo
authors.affiliation: Research Center for Radiotherapy, Korea Institute of Radiological and Medical Sciences, 215-4, Gongneung-dong, Nowon-gu, Seoul 139-706, Korea. jyh328@kirams.re.kr.
authors.forename: Young Hoon
authors.initials: YH
authors.lastname: Ji
authors.affiliation: School of Biomedical Engineering, College of Biomedical &amp; Health Science, BK21 Plus Research Institute of Biomedical Engineering, Konkuk University, 322 Danwol-dong, Chungju-si, Chungcheongbuk-do 380-701, Korea. kko988@hotmail.com.
authors.forename: Kyoung Won
authors.initials: KW
authors.lastname: Jang
mesh_terms: D003037:Cobalt Radioisotopes; D004867:Equipment Design; D005240:Feasibility Studies; D005336:Fiber Optic Technology / Q000295:instrumentation*; D055100:Optical Fibers; D011874:Radiometry / Q000295:instrumentation*; D011879:Radiotherapy Dosage
chemical_list: D003037:Cobalt Radioisotopes
keywords: Co-60; fiber-optic sensors; radiation dosimeter; radiation therapy