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目的：探讨脑血吸虫病ＭＲＩ表现特点及诊断价值。方法：对９例经手术病理或临床证实的脑血吸虫病的ＭＲＩ资料进行回顾性分析。结果：（１）９例中，２例单发；７例多发，分布于顶颞枕叶皮层和皮层下区，其中２例同时见于小脑和脑干；（２）平扫：Ｔ１ＷＩ虫卵肉芽肿病灶为稍长Ｔ１略低信号，呈斑点状或结节状，同周围低信号水肿分界欠清；Ｔ２ＷＩ为等Ｔ２信号，常被水肿高信号掩盖；（３）ＧｄＤＴＰＡ增强扫描，病灶大多呈明显均一强化；（４）灶周水肿较重而占位效应相对较轻；（５）吡喹酮驱虫治疗，病灶缩小，水肿消退。结论：结合病史与脑脊液血吸虫免疫学试验，ＭＲＩ是诊断本病的可靠方法。
Objective: To investigate the MRI features and diagnostic value of cerebral schistosomiasis. Methods: MRI data of 9 cases of pathologically or clinically confirmed cerebral schistosomiasis were analyzed retrospectively. Results: (1) In 9 cases, 2 cases were solitary; 7 cases were multiple and distributed in the parietal and temporal occipital cortex and subcortical region, of which 2 cases were found in cerebellum and brain stem. (2) Plain scan: T1WI egg granulation Tumor lesions for a slightly longer T1 slightly lower signal, spotted or nodular, with the surrounding low signal edema demarcation is less clear; T2WI equal T2 signal, often eclipsed by high signal; (3) Gd DTPA enhanced scan, lesion (4) Perifocal edema is heavier and occupying effect is relatively lighter; (5) Praziquantel repellent treatment reduces the lesion and edema subsided. Conclusion: Combined with history and immunology of schistosoma cerevisiae, MRI is a reliable method to diagnose this disease.