The cases were divided into three groups according to resection scope, radiation range and radiation dose of Posterior Fossa. Each group was analysed with 1, 3, 5 year survival rates and prognostic.
Results the large dosedivided radiotherapy may improve the patient's survival quality, shorten the patient's treatment time, does not increase the patient's adverse reactions of radiotherapy.
结果大剂量分割可提高患者的生存质量，缩短患者的治疗时间，不增加患者的放射反应。
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Methods The healthy volunteers were divided into 6 different dose groups randomly for the clinical trial including 4 single dose groups and 2 multiple dose groups.