Purpose:To evaluate the usefulness of ADC in differentiating tumor, edema, and normal brain tissue, and in grading the malignancy of cerebral astrocytomas.
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。
Methods: Selected patients with craniocerebral injury 141 cases, normal controls were 144 people; classified according to the GCS Glasgow grading method;
方法：选择各型颅脑损伤患者141例，正常对照者144人，患者按GCS格拉斯哥评分法进行分类；
Philippine's rice grading system has consulted the rice grading model commended by FAO, one of its notable characters is to carry out visual identifiable normal packaging.
菲律宾稻米分级系统参照了联合国粮农组织（FAO）推荐的大米分级模式，推行视觉识别标准化包装是菲律宾稻米质量标准的一个重要特征。
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