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Heavy ion therapy for malignant gliomas Masao MATSUTANI 1 , Kintomo TAKAKURA 2 , Junetsu MIZOE 3 , Hirohiko TSUJII 3 1Department of Neurosurgery, Saitama Medical School 2Tokyo Women's Medical University 3Research Center of Charged Particle Therapy, National Institute of Radiological Sciences Keyword: Heavy ion therapy , Carbon ion , Malignant glioma pp.403-409
Published Date 1999/6/10
DOI https://doi.org/10.11477/mf.1431901059
  • Abstract
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 This is a PhaseI/II clinical study of treatment for malignant gliomas using carbon (C) ion delivered by Heavy Ion Medical Accelerator in Chiba (HIMAC).

 HIMAC is capable of accelerating ions at an optimal injection energy in relation to the target volume depth; therapy can be performed with a favorable dose distribution and minimal fragmentation. Furthermore, heavy ion beams are high linear energy transfer (LET) beams, and thus its relative biological effectiveness (RBE) is higher than that of X-rays. As a result, heavy ion therapy is expected to be effective against radiation-resistant tumors that cannot be treated by conventional treatment methods. At the first step of the treatment, photon beam (50 Gy/25 times/5 weeks) is irradiated to the target volume, matching the T2-high intensity area on MRI. Simultaneously, anticancer agents, 100mg/m2(body surface area) of ACNU, are administered on the1st, and4th or5th week after the start of radiation therapy. Carbon ion beams (20 GyE/8 times/2 weeks) are irradiated to the target volume after the end of photon beam therapy.

 After the dose escalation from 16.8 GyE up to the present 20.0 GyE, a tumor control rate became 100% ; it shows an excellent local effect of the treatment.


Copyright © 1999, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1243 印刷版ISSN 0001-8724 医学書院

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