チェレンコフ光によるパルス放射線の出力波形測定

元データ Japan Society of Medical Physics

概要

A study of the output-shape for the pulsed radiations was carried out by means of a Cerenkov-light detection. The electron output-shapes of the Betatron were single- or double-peak distributions and varied with electron intensity. For the 10 MV Linac (105 degrees bended beam) x-rays its shapes showed triple-peak distributions and varied with magnetron frequency. The output-shape of the 6 MV Linac (straight beam) x-rays was a rectangular-like wave. And, the observed pulse-width was about 2 micro-second for the all.<BR>The Cerenkov-light detector is easily con s t r acted and measurement can be simply carried out. Therefore, it is seemed that this method is useful for an adjustment of the pulsed radiation output of the therapy machines.

著者

熊谷 孝三 国立病院九州がんセンター
村田 迪夫 国立病院九州がんセンター
廣瀬 哲雄 宮崎医科大学医学部附属病院放射線部
竹井 力 九州大学医療技術短期大学部
廣瀬 哲雄 宮崎医科大学附属病院放射線部
熊谷 孝三 国立病院九州がんセンター放射線部
村田 迪夫 国立病院九州がんセンター放射線部

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