@misc{oai:repo.qst.go.jp:00071827,
 author = {早乙女, 直也 and 古川, 卓司 and 原, 洋介 and 野田, 耕司 and 水島, 康太 and 皿谷, 有一 and 丹正, 亮平 and 白井, 敏之 and 早乙女 直也 and 古川 卓司 and 原 洋介 and 野田 耕司 and 水島 康太 and 皿谷 有一 and 丹正 亮平 and 白井 敏之},
 month = {Sep},
 note = {At the National Institute of Radiological Sciences (NIRS), we have been developing the rotating-gantry system for the carbon-ion radiotherapy. This system is equipped with a three-dimensional pencil beam scanning irradiation system. To ensure the treatment quality, calibration of the primary dose monitor, range check, dose rate check, machine safety check, and some mechanical tests should be performed efficiently. For this purpose, we have developed a measurement system dedicated for quality assurance (QA) of this gantry system. The ion beam¿s dose output are calibrated by measurement using an ionization chamber. A Farmer type ionization chamber is inserted into the center of a plastic water phantom. The thickness of the phantom could be changed so that employ both calibration of the output at entrance and output checking at center of the irradiation field. The ranges of beams are verified using a CCD camera and a scintillator system. From the taken images, maximum gradient points are determined by some image processing and compared with reference data. In this paper, we describe consideration of the daily QA for the rotating-gantry., The 2015 International Beam Instrumentation Conference (IBIC 2015)参加・発表},
 title = {Development of QA System for the Rotating Gantry for Carbon Ion Therapy at NIRS},
 year = {2015}
}