现代妇产科进展2025，Vol.34Issue(11)：826-829,4.DOI:10.13283/j.cnki.xdfckjz.2025.11.035
三维超声与磁共振成像测量早孕期胎盘体积的对照研究
Assessment of placental volume in early pregnancy:three-dimensional ultrasonography vs magnetic resonance imaging
摘要
Abstract
Objective:To evaluate the accuracy of placental volume measurements in early pregnancy using three-dimensional ultrasound(3D-US)and magnetic resonance imaging(MRI),with the water displacement method serving as the gold standard.Methods:A total of 45 singleton pregnancies terminated at 11～13+6 weeks of gestation were included.Placental volumes were measured using 3D-US(VOCAL method with 30° rotation)and MRI(manual segmentation with ITK-SNAP software).The actual placental volume was determined using the water displacement method.Pearson correlation analysis was performed to assess the association between 3D-US,MRI,and actual placental volumes.Bland-Altman analysis was used to evaluate the bias and agreement of 3D-US and MRI measurements compared to the gold standard.Re-sults:Both 3D-US and MRI underestimated the actual placental volume[(45.71±13.59)cm3,(47.07±13.15)cm3 vs(47.78±15.63)cm3].Both methods showed significant correlation with the actual volume[3D-US:r=0.85,P<0.001;MRI:r=0.95,P<0.001].MRI demonstra-ted smaller bias(-0.89cm3 vs-2.07cm3)and narrower limits of agreement(-11.21～9.43 cm3 vs-18.24～14.10cm3)compared with 3D-US.Conclusion:Three-dimensional ultrasound can accurately measure placental volume in early pregnancy.Although its accuracy is slightly inferior to MRI,3D-US remains a convenient,feasible,and reliable imaging modality for placen-tal volumetry,particularly considering its role as the first-line diagnostic tool in obstetric care.关键词
三维超声/磁共振成像/排水法/早孕期胎盘体积/准确性Key words
Three-dimensional ultrasound/Magnetic resonance imaging/Water dis-placement method/Early pregnancy placental volume/Measurement accuracy分类
医药卫生引用本文复制引用
方淑娟,丁文萍,王少特,陈敏,张芸..三维超声与磁共振成像测量早孕期胎盘体积的对照研究[J].现代妇产科进展,2025,34(11):826-829,4.基金项目
2021年武汉市医学科研项目(西医药类)(No:WX21Q66) （西医药类）
