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放射治疗是当前治疗恶性肿瘤的重要手段之一。随着高能射线的应用,治疗的范围愈来愈广泛,据统计约60—70％的恶性肿瘤在治疗过程中都要使用它。决定放射治疗的成败,影响治疗效果的因素,除了临床病理及治疗技术外,放射剂量的准确与否起着很重要的作用。本文作者曾和陕西省计量局、二机部262厂一起对钴治疗机的照射量及吸收剂量进行了反复测试,说明由校准点的照射量x(dc)来计算水模体内该点吸收剂量
Radiation therapy is currently one of the important ways to treat malignant tumors. With the application of high-energy rays, the treatment is more and more widespread. According to statistics, about 60-70% of malignant tumors are used during the treatment. Decide the success or failure of radiation therapy, the factors that affect the treatment effect, in addition to clinical pathology and treatment techniques, the accuracy of radiation dose plays a very important role. The author of this paper has conducted repeated tests on the irradiation dose and absorbed dose of the cobalt treatment machine together with the Bureau of Metrology of Shaanxi Province and Bureau No. 262 of the Second Machine Division, which shows that the absorbed dose at this point in the water phantom is calculated from the irradiation amount x (dc) at the calibration point