マイクロセレクトロン HDR システムの使用経験と検討

概要

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Osaka University Hospital introduced a high dose rate remote after-loading system-micro-Selectron HDR-in April 1991 for the first time in Japan. This report discuses and evaluates the system : 1) Structure and function of the micro-Selectron HDR System. 2) Output measurement and position check of iridium source. 3) Application examples and therapy planning. Data of radiation source is important for dose calculation in brachytherapy; so, we here discuss the measurement method and result. We achieved an accuracy of ± 1mm for loaded source position. We believe that in an output measurement of an iridium source, it is possible to maintain reproducibility with an accuracy of within ± 1% when the exclusive output measuring instrument is used. We have applied this system to about 40 cases. As for therapy planning, we used an X-ray simulator and therapy planning computer. Then, we found that, even with complicated source arrangement, we could obtain dose distribution suitable to such case. Using the function of this system and our originality, we realized to expand application of brachytherapy.
公益社団法人日本放射線技術学会の論文
1993-01-01