Experimental Evaluation of Pencil Beam Algorithm by Measurements of Dose Distributions of Protons Traversing an L-Shaped Phantom
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概要
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A proton dose-calculation method has been developed on the basis of the pencil-beam algorithm (PBA), which is expected to improve the precision of the conventional method based on the broad-beam algorithm (BBA). In order to verify the accuracy of calculation by the PBA, dose distributions formed by a horizontal proton beam traversing a phantom with an L-shaped horizontal cross section were measured using a silicon semiconductor detector (SSD) in a water vessel. The results of the measured dose distributions agree well with the ones calculated using the PBA within an rms error of 2.3%. Therefore, the dose-calculation method by the PBA is useful and applicable to actual treatment planning of the proton therapy.
- 2001-01-15
著者
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Nohtomi Akihiro
Institute Of Applied Physics University Of Tsukuba
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Sakae Takeji
Institute Of Clinical Medicine University Of Tsukub
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TERUNUMA Toshiyuki
Proton Medical Research Center (PMRC), Tsukuba Univ.
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YASUOKA Kiyoshi
Institute of Basic Medical Science, University of Tsukuba
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Kohno Ryosuke
Institute Of Applied Physics University Of Tsukuba
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Takada Yoshihisa
Institute Of Applied Physics University Of Tsukuba
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Nohtomi Akihiro
Institute of Applied Physics, University of Tsukuba 305, Japan
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Kohno Ryosuke
Institute of Applied Physics, University of Tsukuba 305, Japan
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Yasuoka Kiyoshi
Institute of Basic Medical Sciences, University of Tsukuba 305, Japan
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Sakae Takeji
Institute of Clinical Medicine, University of Tsukuba 305, Japan
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Terunuma Toshiyuki
Proton Medical Research Center, University of Tsukuba 305-0801, Japan
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Takada Yoshihisa
Institute of Applied Physics, University of Tsukuba 305, Japan
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