目的 探讨MRI在急性期脑干梗塞 诊断中应用价值。方法 回顾性分析我院 2013年12月-2015年12月期间接收诊治的 42例急性期脑干梗塞患者的临床资料和 MRI影像学资料，综合分析急性期脑干梗 塞的MRI影像特征及病理特点。结果 42例 急性期脑干梗塞单发患者23例，多发患者 19例，共发现梗死灶61个，其中梗塞灶的 病变部位包括有延髓、桥脑、中脑。梗死 直径范围为1mm-28mm之间，其中梗死范围 在1mm-10mm的有19个，10mm-20mm的有31 个，20mm-28mm的有6个。梗塞灶形态多 为点状(24个)、片状(18个)或条索状(14 个)。MRI显示结果为：25例在T1WI为等信 号，14例T1WI为稍低信号；4例在T2WI为 等信号，35例在T2WI为高信号；DWI均为 高信号。结论 MRI在对脑干梗塞患者的临 床诊断中，能够呈现出脑干的立体结构， 比较全面清楚地显示出梗死的数目、部 位、尺寸和形态，且对脑干梗塞的定位诊 断及定性诊断都具有较高的诊断符合率， 在临床中可以作为一种首先的检查方法， 值得进一步推广和应用。

Objective To study MRI application value in the diagnosis of acute brainstem infarction. Methods 42 patients with acute brainstem infarction from December 2013 to December 2015 in our hospital were included into the study, and the clinical data and MRI imaging data was collected to comprehensive analyze the MRI imaging features and pathological characteristics of the acute phase brainstem infarction. Results 42 cases of acute phase single patients by pathological examination of 23 patients with brainstem infarction, 19 patients with multiple, found infarcts 61, among them including the lesion site of infarction cerebral medulla oblongata, bridge, the midbrain. Infarction range between 1 mm-28 mm in diameter, including scope of infarction in 1 mm-10 mm of 19, 10 mm to 20 mm there are 31, 20 mm-28 mm has six. Infarct morphology of dot (24), the article sheet (18) or funicular (14). MRI shows the result is: 25 cases for such signal in T1WI, 14 cases of T1WI is slightly low signal; 4 cases for such signal in T2WI, 35 cases for high signal in T2WI; DWI is high signal can. Conclusion MRI in the clinical diagnosis of patients with brainstem infarction, can present the three-dimensional structure of the brain stem, comprehensive clearly shows that the number of infarction, position, size and shape, and the localization diagnosis and qualitative diagnosis of brainstem infarction has high diagnostic coincidence rate, which could be the first choice in the clinic and is worth of further promotion and application.