目的 探讨胎儿侧脑室增宽并出血的 MRI特征及临床诊断价值。方法 回顾性分析30例胎儿侧脑室增宽并出血的影像及临床资料，观察侧脑室增宽程度以及出血病灶部位、范围、信号特征、脑室及周围结构、是否合并其他异常，并分级评价出血的严重程度。将MRI与超声结果进行对照分析。结果 MRI检出率为100%（36/36），产前超声的检出率仅为33.33%（12/36）。MRI对孕28～31周、32～35周侧脑室增宽并出血的检出率高于超声，差异均有统计学意义（P＜0.05），MRI对侧脑室增宽并出血的不同严重程度的检出率高于超声，差异有统计学意义（P＜0.05）。结论 产前MRI可清晰显示侧脑室的增宽程度和出血的部位、范围以及合并其他颅内结构的异常，其检出率高于超声，联合检查能更准确及更早的发现并诊断侧脑室的增宽并出血，对临床评估预后及指导早期干预具有重要的意义。
Objective To explore MRI features and clinical diagnostic value of fetal lateral ventricle broadening and hemorrhage. Method The imaging and clinical data of 30 cases of fetal lateral ventricle broadening and bleeding were analyzed retrospectively. MRI and ultrasound results were compared. Results The detection rate of MRI was 100% (36/36), and the detection rate of prenatal ultrasound was only 33.33% (12/36).The detection rate of MRI for widened lateral ventricles and bleeding at 28～31 and 32～35 weeks was higher than that of ultrasound, and the difference was statistically significant (P<0.05). The detection rate of MRI for widened lateral ventricles and bleeding at different severity was higher than that of ultrasound, and the difference was statistically significant (P<0.05).Conclusions Prenatal MRI can clearly show the increased width of lateral ventricles, the location and range of hemorrhage and other intracranial structural abnormalities. The detection rate is higher than that of ultrasound. Combined examination can more accurately and earlier detect and diagnose the widened lateral ventricles and hemorrhage, which is of great significance for clinical evaluation of prognosis and guidance of early intervention.
