Spot Scanning Using Radioactive 11C Beams for Heavy-Ion Radiotherapy

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概要

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• A scheme for spot scanning using 11C beams has been developed in order to form and verify a three-dimensionally conformal irradiation field for cancer radiotherapy. By selecting the momentum spread of a 11C beam, we could considerably decrease the distal falloff of the irradiation field, thus conserving the beam quality. To estimate and optimize the dose distribution in the irradiation field, it is essential to evaluate the precise dose distribution of spot beams. The coupling of the lateral dose and depth-dose distributions originating from a wide momentum spread should be taken into account to calculate the dose distribution of 11C beams. The reconstructed dose distribution of the irradiation field was in good agreement with the experimental results, i.e., within $\pm 0.2$%. An irradiation field of $35\times 35\times 43$ mm3 was optimized and spot scanning using 11C beams was carried out. The flatness was within $\pm 2.3$% with an error of 1% in the detector resolution.

• Publication Office, Japanese Journal of Applied Physics, Faculty of Science, University of Tokyoの論文
• 2001-04-15

著者

• KITAGAWA Atsushi

  National Institute of Radiological Sciences

• FUTAMI Yasuyuki

  National Inst. Radiological Sci.

• Mizuno Hideyuki

  Saitama Cancer Center

• ISEKI Yasushi

  Toshiba Co.

• Iwashita Yoshihisa

  Nuclear Science Research Facility, ICR, Kyoto University

• Kanazawa Mitsutaka

  National Institute of Radiological Sciences

• Noda Koji

  National Institute of Radiological Sciences

• Urakabe Eriko

  Nuclear Science Research Facility Icr Kyoto University

• TOMITANI Takehiro

  National Institute of Radiological Sciences

• SUDA Mitsuru

  National Institute of Radiological Sciences

• SHIMBO Munefumi

  National Cancer Center Hospital East

• HIRATA Yoichi

  Accelerator Engineering Corp.

• Noda Akira

  Nuclear Science Research Facility Icr Kyoto University

• Kanai Tatsuaki

  National Inst. Of Radiol. Sci

• Urakabe Eriko

  Nuclear Science Research Facility, ICR, Kyoto University, Gokanosho, Uji, Kyoto 611-0011, Japan

• Kitagawa Atsushi

  National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan

• Suda Mitsuru

  National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan

• Iseki Yasushi

  Toshiba Corp., Isogo Nuclear Engineering Center, 8 Shinsugita-cho, Isogo, Yokohama 235-8523, Japan

• Hanawa Katsushi

  Toshiba Corp., Isogo Nuclear Engineering Center, 8 Shinsugita-cho, Isogo, Yokohama 235-8523, Japan

• Sato Kohsuke

  Toshiba Corp., Isogo Nuclear Engineering Center, 8 Shinsugita-cho, Isogo, Yokohama 235-8523, Japan

• Kanazawa Mitsutaka

  National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan

• Futami Yasuyuki

  National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan

• Mizuno Hideyuki

  Saitama Cancer Center, 818 Komuro, Ina, Kita-Adachi, Saitama 362-0806, Japan

• Shimbo Munefumi

  National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa, Chiba 277-8577, Japan

• Kanai Tatsuaki

  National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan

• Iwashita Yoshihisa

  Nuclear Science Research Facility, ICR, Kyoto University, Gokanosho, Uji, Kyoto 611-0011, Japan

• Hirata Yoichi

  Accelerator Engineering Corp., 2-13-1 Anagawa, Inage, Chiba 263-0043, Japan

• Noda Koji

  National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan

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