ツジ　シュウヘイ   Shuhei Tsuji   辻　修平    所属   川崎医科大学  医学部 一般教養　自然科学    職種   准教授
論文種別	原著
言語種別	英語
査読の有無	査読あり
表題	High dose rate 192Ir brachytherapy source model Monte Carlo dosimetry: mHDR-v2 and mHDR-v2r
掲載誌名	正式名：PLOS ONE
掲載区分	国外
巻・号・頁	19(2)
総ページ数	17
著者・共著者	Shuhei Tsuji, Naomasa Narihiro, Masataka Oita, Yoshihito Namito, Hideo Hirayama
担当区分	筆頭著者,責任著者
発行年月	2024/02/09
概要	After 2010, the source model of the microSelectron HDR Afterloader System was slightly modified from the previous model. Granero et al. named the modified source model “mHDR-v2r (revised model mHDR-v2)” and the previous model “mHDR-v2”. They concluded that the dosimetric differences arising from the dimensional changes between the mHDR-v2 and mHDR-v2r designs were negligible at almost all locations (within 0.5% for r >= 0.25 cm), the two-dimensional anisotropy function difference between the two sources is found 2.1% at r = 1.0 cm when compared with the results of the other experimental group. To confirm this difference, we performed a full Monte Carlo simulation without energy-fluence approximation. This is useful near the radiation source where charged-particle equilibrium does not hold. The two-dimensional anisotropy function of the TG-43U1 dataset showed a few percent difference between the mHDR-v2r and mHDR-v2 sources. There was no agreement in the immediate vicinity of the source (0.10 cm and 0.25 cm), when compared to Granero et al. in mHDR-v2r sources. The differences in these two-dimensional anisotropy functions were identified.
researchmap用URL	https://doi.org/10.1371/journal.pone.0298550