目的 总结中青年隐匿性脑血管 畸形临床特点及MRI表现。方法 以我院 2011年1月-2015年10月期间收治28例隐 匿性脑血管畸形患者作为研究对象，均 行CT与MRI检查并予以相应治疗措施。总 结该病临床特点，对比CT与MRI诊断准确 性。结果 中青年隐匿性脑血管畸形男性 患者明显多于女性，且多无高血压史， 病因以脑畸形血管破裂导致颅内自发性出 血为主。临床表现包括突发性头痛及呕 吐、肢体障碍、意识障碍、运动失语。 CT诊断准确率为64.3%(18/28)，MRI更 高为89.3%(25/28)，差异有统计学意义 (χ2 =4.909，P=0.027)。CT平扫以等、高 混杂密度信号为主，病灶内可见线条状钙 化；增强扫描多无强化。MRI 平扫示8例 T1WI呈等、高、低混杂信号，T2WI呈低、 等和高混杂信号，其余20例T1WI 呈等、 低混杂信号，T2WI 以等信号为主。结论 与CT相比，MRI具有软组织分辨率高的优 点，利于发现病变及隐匿性脑血管畸形内 出血各期变化，且无占位效应及水肿或不 明显，SWI序列征象特征明显，诊断准确 性更高，临床价值大。

Objective To summarize the clinical characteristics and MRI findings of the young and middle-aged with latent cerebrovascular malformation. Methods 28 patients with latent cerebrovascular malformation who were treated in our hospital between January 2011 and October 2015 were selected as the study objects. All patients underwent CT and MRI examination and were given corresponding treatment measures. The clinical characteristics of the disease were summarized and the diagnostic accurate rates of CT and MRI were compared. Results In the young and middle-aged patients with latent cerebrovascular malformation, male patients were significantly more than female ones and most of them were without history of hypertension. The main cause was intracranial spontaneous hemorrhage induced by cerebral malformation angiorrhexis. The main clinical manifestations were sudden headache and vomiting, physical handicaps, disturbance of consciousness, motor aphasia and so on. The diagnostic accuracy of CT (64.3%) was lower than that of MRI (89.3%) (χ2 =4.909, P=0.027). The main finding of CT scan of the lesions was equal and highly mixed-density signal with visible line-like calcification in lesions; After enhanced, there was little enhancement. MRI scan showed that 8 cases of T1WI presented equal, high, and low mixed signals and T2WI presented low, equal and highly mixed-density signals. The other 20 cases of T2WI presented equal and low mixed signals. On T2WI, there mainly were equal signals. Conclusions Compared with CT, MRI has the advantages of high resolution of soft tissues, which is beneficial to find the changes of the lesions and entorrhagia of latent cerebrovascular malformation at different stages. Besides, it is without mass effect and edema or unobvious. The sign characteristics of SWI sequences were obvious, with higher diagnostic accuracy and greater clinical value.