A BASIC STUDY OF THE CONFORMATION TREATMENT FOR CANCER OF THE MAXILLARY SINUS IN 6 MV X-RAY

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  • 6MV.X線による上顎癌原体照射の基礎実験
  • 6MV.Xセン ニ ヨル ウワアゴガン ゲンタイ ショウシャ ノ キソ ジッケン

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In radiation therapy for the cancer of the maxillary sinus, it is important point clinically to reduce the dosis for the eye balls, even if the conformation technique were applied. In selective protection technique of the eye balls combined with the 6 MV X-ray conformation radiotherapy for maxillary sinus cancer, the effect of various sized absorber on dose distribution were studied. Cylinders of Tungsten alloy were used for absorber, and dose distribution were measured with film method. It was revealed that the larger the size of absorber, the greater the difference between interested target volume and high dose region. In regard to dose homogeneity of traget volume and to protection of eye balls, it became quite apparent that the absorber of 20mmφ to the healthy side, and 17.5mmφ to the tumor side were agreeable size.

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