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目的：提高对瘤卒中ＭＲ特征的认识。材料与方法：对７７例１０６个瘤卒中和５５例单纯脑内血肿作影像对照，重点观察血肿的结构及在ＭＲ重度Ｔ２加权和梯度回波图像上血肿周围含铁血黄素沉积圈的出现率和完整性，比较瘤卒中和单纯血肿。结果：１０６个瘤卒中，血肿周围含铁血黄素沉积圈完全缺失４０个（３８％），部分缺失５７（５４％）个，厚度不均匀（９．８％）。而５５例单纯脑内血肿的血肿周围均可见到完整均匀的含铁血黄素沉积圈。结论：亚急性～慢性血肿周围含铁血黄素沉积圈的不完整性和不规则性是诊断瘤卒中的一个重要依据。
OBJECTIVE: To improve the understanding of the MR features of tumor strokes. MATERIALS AND METHODS: The imaging of 77 patients with 106 strokes and 55 patients with simple intracerebral hematoma was performed. The structure of the hematoma and the incidence of hemosiderin-containing lamellae around the hematoma on MR weighted T2-weighted and gradient echo images were observed. And completeness, compared to tumor and hematoma alone. RESULTS: Of the 106 strokes, there were 40 (38%) complete absence of hemosiderin tracts and 57 (54%) partial missing hemosiderin lesions with uneven thickness (9.8%). 55 cases of simple intracerebral hematoma hematoma can be seen around the complete and uniform hemosiderin deposition. Conclusion: The incompleteness and irregularity of hemosiderin deposition zone around subacute ~ chronic hematoma are an important basis for the diagnosis of stroke.