超声联合磁共振成像在减少胎盘植入漏诊的价值

The value of ultrasonography combined with MRI in the misdiagnosis of placenta accreta

目的探究超声联合磁共振成像(MRI)在减少胎盘植入漏诊的价值。方法回顾性分析92例胎盘植入孕妇的影像资料,所有研究对象均在同一时期实施超声、MRI和超声联合MRI检查。将影像诊断结果与病理诊断金标准进行对比,统计分析不同检查方式对胎盘植入的诊断结果,得出超声联合核磁共振成像对胎盘植入的漏诊价值。结果病理检出胎盘植入75例,17例未发生胎盘植入;超声检出胎盘植入76例,符合率83%,漏诊9例,漏诊率12%;MRI检出胎盘植入80例,符合率87%,漏诊7例,漏诊率9%;超声联合MRI检出胎盘植入88例,符合率96%,漏诊3例,漏诊率4%。结论对疑似胎盘植入患者做产前检查时,实施超声联合磁共振成像检查,对降低胎盘植入的漏诊发生率,提高诊断准确性有重要意义。

Objective This paper aims to investigate the value of ultrasonography combined with MRI in the misdiagnosis of placenta accreta. Methods Ninty-two suspected placenta accreta patients were selected as the objects of experiment. All patients were examined by ultrasonography and MRI before the surgery. The result of imaging diagnostic were compared with gold standard. The diagnostic value of ultrasonography, MRI and their combination（third method） to placenta accreta were analyzed, and find the value of ultrasonography combined with MRI in the misdiagnosis of placenta accreta. Results The diagnosis after delivery of 92 patients was placenta accreta in 75 cases, non-placenta accreta in 17 cases. The ultrasonography diagnosis was correct in 76 cases, the diagnosis coincidence rate was 83%, 9 cases were misdiagnosed, the misdiagnostic rate was 12%. The MRI diagnosis was correct in 80 cases,the diagnosis coincidence rate was 87%, 7 cases were misdiagnosed, the misdiagnostic rate was 9%. The combination of ultrasonography and MRI diagnosis was correct in 88 cases, the diagnosis coincidence rate was 96%, 3 cases were mis-diagnosed, the misdiagnostic rate was 4%. Conclusion Using ultrasonography combined with MRI for the prenatal diagnosis of placenta accreta can help to improve the diagnosis coincidence rate and reduce the misdiagnosis rate.