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구분 SCI
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학술지 Korean Pediatric and Adult Head Computational Phantoms and Application to Photon Specific Absorbed Fractions Calculations
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저자
Daphnee Villoing, Dayton McMillan, 김광표, 박일, 이애경, 최형도, 이춘식
발행일
201711
출처
Radiation Protection Dosimetry, v.176 no.3, pp.294-301
ISSN
0144-8420
출판사
Oxford Univ. Press
DOI
https://dx.doi.org/10.1093/rpd/ncx009
협약과제
17HR1900, 스마트 사회 전자파 노출량 제어 기반 구축, 최형도
초록
In recent decades, applications of single photon emission computed tomography and positron emission tomography in clinical neuroimaging have markedly increased. In this study, we developed a series of Korean computational head phantoms with detailed cranial substructures for 6-, 9-, 12- and 15-year-old children and adult by non-uniformly adjusting a template head phantom to match the Korean standard head dimensions. The Korean head phantoms were coupled with a Monte Carlo transport code to calculate age-dependent specific absorbed fraction (SAF) for the combination of 10 source and target regions and mono-energetic photons ranging from 0.01 to 4 MeV. Compared to the adult phantom, the 6-y phantom showed up to 1.4-fold greater self-absorption SAF (cerebellum) and up to 1.8-fold greater cross-irradiation SAF (cerebellum < eye balls). With addition of electron SAFs in the future, our photon SAF data will facilitate dose calculations for various cranial substructures in patients undergoing cranial neuroimaging procedures.
KSP 제안 키워드
Absorbed fraction, Age-dependent, Computed tomography(C.T), Coupled with, Monte carlo, Self-absorption, Single photon emission computed tomography, Transport code, positron emission tomography(PET)