目的：分析脑恶性星形细胞瘤手术后采用单纯放射治疗及放疗加颈动脉化疗的疗效。
Purpose: to analyze the treatment effects by radiotherapy alone and radiotherapy plus chemotherapy of carotid artery intubation after operation for malignant astrocytoma.
结论：间变性星形细胞瘤和肥胖细胞性星形细胞瘤更具恶性，易复发。
Conclusion The result suggest that anaplastic astrocytoma and gemistocytic astrocytoma are more malignant and more recurrent.
目的：评价近似弥散系数（ADC）在鉴别星形细胞肿瘤、瘤周水肿及正常组织中的作用，以及对星形细胞肿瘤良、恶性评估中的价值。
Purpose:To evaluate the usefulness of ADC in differentiating tumor, edema, and normal brain tissue, and in grading the malignancy of cerebral astrocytomas.
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