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目的探讨胎儿脑Galen静脉瘤的典型超声表现,提高颅内囊性病变的诊断符合率,减少误诊。方法回顾性分析经产前超声筛查发现的5例胎儿脑Galen静脉瘤的超声声像图。结果检出的5例胎儿脑Galen静脉瘤表现为胎儿丘脑切面,近中线区靠后方的薄壁囊性无回声,彩色多普勒显示囊性无回声内彩色血流。结论因胎儿脑Galen静脉瘤有其典型的声像图表现及多普勒显示,因此彩超能有效的诊断胎儿脑Galen静脉瘤,并能和蛛网膜囊肿及第三脑室扩张准确鉴别,彩超是诊断胎儿脑Galen静脉瘤的首选方法。
Objective To investigate the typical ultrasound manifestations of fetal brain Galen’s aneurysms and to improve the coincidence rate of intracranial cystic lesions and reduce the misdiagnosis. Methods A retrospective analysis of 5 cases of fetal brain Galen venous aneurysm detected by prenatal ultrasound screening was performed. Results Five cases of fetal brain Galen’s venous aneurysm were detected as fetal thalamic section. The lesser cystic aneurysm in the proximal and midline regions of the fetus showed color anechoic color flow in color Doppler. Conclusion Due to fetal Fetal brain Galen’s aneurysm has its typical sonogram and Doppler display, so color Doppler ultrasound can effectively diagnose fetal brain Galen’s vein aneurysm, and can be accurately identified with the arachnoid cyst and the third ventricle dilation, color Doppler ultrasound diagnosis Fetal brain Galen vein aneurysm preferred method.