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报告５２例脑深部肿瘤采用ＣＴ导向立体定向技术，用放射性胶体磷酸铬（３２ｐ）进行内放射性治疗。其中３１例联合甲氨喋呤Ｍｅｔｈｏｔｒｅｘａｔｅ（ＭＴＸ）内化疗。术后经临床和神经放射学随访６～５２月，临床症状消失１５例，改善２７例，无效６例，恶化４例；头颅ＣＴ扫描复查证实肿瘤消失７例，肿瘤体积缩小＞５０％２９例，肿瘤体积缩小２５～５０％６例，肿瘤体积缩小＜２５或增大＞５０％以上１０例，无手术死亡和颅内感染并发症。作者认为，此法操作简便，效果确实，并发症少，适合于治疗颅内深部及重要功能部位的肿瘤，尤其对囊性薄壁的肿瘤效果最佳，对于厚壁，囊内结节及＜３ｃｍ的实质性肿瘤均有疗效。本组资料表明，联合内放疗疗效比单纯内放疗为佳。
52 cases of deep brain tumors were reported using CT-guided stereotactic techniques and internal radiotherapy with radioactive colloidal chromium phosphate (32p). Thirty-one patients were treated with Methotrexate (MTX) chemotherapy. Followed by clinical and neuroradiological follow-up 6 to 52 months, clinical symptoms disappeared in 15 cases, 27 cases improved, 6 cases were invalid, 4 cases deteriorated; head CT scan confirmed 7 cases of tumor disappearance, tumor size reduction> 50% 29 cases The tumor volume was reduced by 25 to 50% in 6 cases, and the tumor volume was reduced by <25 or increased >50% in 10 cases. There was no operative mortality or complications of intracranial infection. The author believes that this method is simple, effective, with few complications, suitable for the treatment of tumors in the deep and important functional parts of the brain, especially for cystic thin-walled tumors the best effect, for thick-walled, intracapsular nodules and < 3cm solid tumors have a curative effect. The data in this group shows that the efficacy of combined internal radiotherapy is better than that of internal radiotherapy alone.