脑型血吸虫病的扩散加权成像表现

目的：探讨脑型血吸虫病的扩散加权成像表现。方法：8例脑型血吸虫病患者,在常规MRI检查基础上行DWI扫描。分析DWI图像,测量血吸虫病灶、灶周水肿及对侧正常脑组织的ADC和eADC值。结果：DWI图上,血吸虫病灶和灶周水肿均呈等信号或稍高信号。脑血吸虫病灶、灶周水肿和对侧正常脑组织的ADC值分别为（14.78±0.98）×10^-4mm^2/s、（15.41±1.87）×10^-4mm^2/s和（8.48±0.92）×10^-4mm^2/s,eADC值分别为0.23±0.02、0.20±0.04和0.43±0.04。结论：磁共振DWI和ADC、eADC值测量可为脑型血吸虫病的诊断提供有价值的信息。

Appearance of cerebral schistosomiasis on diffusion weighted imaging

Objective：To explore the appearance of cerebral schistosomiasis on DWI.Methods：8 patients with cerebral schistosomiasis underwent routine and diffusion-weighted MR examination.Images of DWI were analyzed.The values of ADC and eADC of lesions,perifocal edema and contralateral cerebral tissues were measured.Results：The lesions of cerebral schistosomiasis and perifocal edema were iso-or hyperintense on DWI.The ADC values of cerebral schistosomiasis foci,perifocal edema and contralateral normal brain tissue were （14.78±0.98）×10^-4,（15.41±1.87）×10^-4,（8.48±0.92）×10^-4mm^2/s respectively,and the eADC values were 0.23±0.02,0.20±0.04,0.43±0.04 respectively.Conclusion：DWI and measurement of ADC and eADC can provide valuable information in the diagnosis of cerebral schistosomiasis.