@article{oai:repo.qst.go.jp:00046523, author = {Mizuno, Hideyuki and Kanai, Tatsuaki and Kusano, Yohsuke and Ko, Susumu and Ohno, Mari and Fukumura, Akifumi and Abe, Kyoko and Nishizawa, Kanae and Shinbo, Munefumi and Sakata, Suho and Ishikura, Satoru and Ikeda, Hiroshi and 水野 秀之 and 金井 達明 and 草野 陽介 and 幸 進 and 大野 真里 and 福村 明史 and 坂間 杏子 and 西澤 かな枝 and 新保 宗史 and 佐方 周防 and 池田 恢}, journal = {Radiotherapy and Oncology}, month = {Feb}, note = {INTRODUCTION: \nThe characteristics of a glass dosimeter were investigated for its potential use as a tool for postal dose audits. Reproducibility, energy dependence, field size and depth dependence were compared to those of a thermoluminescence dosimeter (TLD), which has been the major tool for postal dose audits worldwide. \nMATERIALS AND METHODS: \nA glass dosimeter, GD-302M (Asahi Techno Glass Co.) and a TLD, TLD-100 chip (Harshaw Co.) were irradiated with gamma-rays from a (60)Co unit and X-rays from a medical linear accelerator (4, 6, 10 and 20 MV). \nRESULTS: \nThe dosimetric characteristics of the glass dosimeter were almost equivalent to those of the TLD, in terms of utility for dosimetry under the reference condition, which is a 10 x 10 cm(2) field and 10 cm depth. Because of its reduced fading, compared to the TLD, and easy quality control with the ID number, the glass dosimeter proved to be a suitable tool for postal dose audits. Then, we conducted postal dose surveys of over 100 facilities and got good agreement, with a standard deviation of about 1.3%. \nCONCLUSIONS: \nBased on this study, postal dose audits throughout Japan will be carried out using a glass dosimeter.}, pages = {258--263}, title = {Feasibility study of glass dosimeter postal dosimetry audit of high-energy radiotherapy photon beams}, volume = {86}, year = {2008} }