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目的探讨放射性脑病囊肿形成的CT及MRI表现。方法收集经手术病理证实的22例放射性脑病囊肿形成患者的临床资料,回顾性分析其CT及MRI表现,其中18例术前行CT及MRI检查,4例术前直接行MRI检查。结果 122例放射性脑病囊肿形成均为单发;222例囊肿呈占位效应,周边水肿带形成,中线结构偏移;319例呈单囊改变,3例出现分隔改变;422例囊肿边界清楚,囊壁可见含铁血黄素沉着,扩散不受限,增强扫描呈轻度强化;5囊液密度、信号大致均匀,扩散不受限,18例CT呈偏低密度,平均CT值19 HU;22例液体衰减反转恢复(FLAIR)呈不均匀高信号;18例T1WI呈偏低信号,4例呈偏高信号;21例T2WI呈高信号,1例呈混杂信号;621例囊肿内见少许出血沉积。结论放射性脑病囊肿形成的CT及MRI表现具有一定的特征性,结合病史,不难做出正确诊断。
Objective To investigate the CT and MRI findings of cystic encephalopathy. Methods The clinical data of 22 patients with encephalofacial encephalopathy confirmed by surgery and pathology were collected. The CT and MRI findings were retrospectively analyzed. Among them, 18 cases were examined by CT and MRI preoperatively and 4 cases were examined by MRI directly before operation. Results 122 cases of radionumatic encephalopathy cyst formation were single; 222 cases of cysts were mass effect, the formation of peripheral edema zone, the midline structure shift; 319 cases showed a single capsule change, 3 cases appeared to change; 422 cysts clear boundaries, cysts The wall visible hemosiderin deposition, proliferation is limited, enhanced scanning showed mild enhancement; 5 cystic fluid density, the signal is generally uniform, the proliferation is not limited, 18 cases of CT was low density, the average CT value of 19 HU; 22 cases Fluorescence inversion recovery (FLAIR) showed uneven high signal; 18 cases of T1WI showed low signal, 4 cases were high signal; 21 cases of T2WI was high signal, 1 was mixed signal; 621 cases of cyst see a little hemorrhage . Conclusion CT and MRI manifestations of encephalofacial cyst formation have certain characteristics, combined with medical history, it is not difficult to make a correct diagnosis.