磁共振成像在胎儿泌尿系统异常诊断中的应用  

Application of magnetic resonance imaging to prenatal diagnosis of urinary anomalies

作　　者：吴臣永[1,2] 王青[1] 展新风[1] 王芳[1] 

机构地区：[1]山东大学齐鲁医院放射科,济南250012 [2]青州市人民医院影像科,山东青州262500

出　　处：《山东大学学报（医学版）》2011年第11期142-145,150,共5页Journal of Shandong University:Health Sciences

摘　　要：目的探讨磁共振成像(MRI)在诊断胎儿泌尿系统发育异常中的应用价值。方法应用Philips Achieva1.5T超导型磁共振设备,对产前超声拟诊为泌尿系统发育异常的27～38孕周的胎儿腹部进行检查,行SSh-FSET2WI和FFE T1WI序列轴位、冠状位扫描,33例行产后超声或引产后尸检随访。分析33例胎儿泌尿系统发育异常的MRI表现,并与随访结果比较得出MRI诊断准确率。结果 33例经产前MRI诊断胎儿泌尿系统异常中,多囊性发育不良肾4例、多囊肾5例、肾发育不良3例、异位肾4例、肾缺如4例、马蹄融合肾2例、肾盂输尿管结合处异常4例、重复肾2例以及膀胱输尿管结合处异常5例。与产后超声及引产后尸检结果比较,MRI诊断正确30例,误诊3例,诊断准确率90.9%。结论 MRI在胎儿泌尿系统发育异常诊断中具有较高应用价值,可作为产前超声的重要补充检查手段。Objective To explore the value of magnetic resonance imaging（MRI） in the diagnosis of fetal urinary abnormalities.Methods MR scanning was performed on living fetuses with gestational ages ranging 27-38 weeks,who were diagnosed as having urinary abnormalities by prenatal ultrasonography（US）.Single shot（SSh） FSE T2WI and fast field echo（FFE） T1WI sequences with the Philips Achieva 1.5T MR scanner were used to obtain abdominal images on axial and coronal planes.The results of prenatal MRI of 33 cases were compared with postnatal US or autopsy after abortion,and the accuracy of MRI was evaluated. Results Of the 33 cases with urinary abnormalities diagnosed by MRI,there were 4 cases of multi-cystic renal dysplasia,5 cases of polycystic kidney disease,3 cases of renal dysplasia,4 cases of ectopic kidney and agenesis of kidney respective,2 cases of horseshoe kidney,4 cases of ureteropelvic junction anomaly,2 cases of renal duplication,and 5 cases of ureterovesical junction anomaly.Compared with the results of postnatal US and autopsy,30 cases（90.9%） were correctly diagnosed and 3 cases incorrectly. Conclusion MRI hes high value in the diagnosis of fetal urinary anomalies,and it could be used as an important complementary modality for prenatal US.

关 键 词：胎儿 泌尿系统畸形 磁共振成像 

分 类 号：R445.2[医药卫生—影像医学与核医学]