小儿手足口病脑炎的MRI表现特征

MR Findings on Pediatric Hand-foot-mouth Disease Encephalitis

目的:探讨小儿手足口病脑炎的MRI表现特征,提高诊断水平。材料和方法:回顾性分析5例小儿手足口病脑炎的MRI表现。结果:3例病灶局限在脑桥和延脑交界部,1例病灶以脑桥和延脑交界为主向两侧延伸,1例病灶位于脑桥偏背侧。5例病变均呈略长T1、略长T2斑片状信号,边界不清,DWI图呈略高信号。结论:小儿手足口病脑炎MRI表现主要为位于脑桥和延脑交界区斑片状信号,MRI能真实地显示其脑炎脑部受损情况,对临床治疗提供可靠的影像学依据。

Purpose To improve the comprehension of MR imaging features of hand-foot-mouth disease（HFMD）.Materials and Methods The MRI findings of 5 cases of HFMD were retrospectively analyzed.Results The lesions in 4 cases were located in the junction of the pons and medulla oblongata,of which 1 lesion extended bilaterally at the same time.The lesion in the fifth case was located in dorsal pons.All lesions demonstrated patchy slight hyperintensity on T1WI and slight hypointensity on T2WI.These ill-circumscribed lesions showed hyperintensity on diffusion-weighted imaging.Conclusion HFMD possesses certain MR imaging characteristics,thus providing reliable imaging evidence for clinical diagnosis.