球体模式定量三维能量多普勒超声评估胎盘血流灌注的可行性研究  

Validation of representative placental vascularization by sphere mode of quantitative three-dimensional power Doppler ultrasonography

作　　者：董秀娟[1] 张丽[1] DONG Xiujuan ZHANG Li(Department of Ultrasound, Xuzhou Maternity and Child Health Care Hospital, Xuzhou 221009, Jiangsu Province, China)

机构地区：[1]徐州市妇幼保健院超声科,江苏徐州221009

出　　处：《肿瘤影像学》2017年第3期227-230,共4页Oncoradiology

摘　　要：目的:探讨定量三维能量多普勒超声(three-dimensional power Doppler ultrasonography,3D-PDU)球体模式记录局部胎盘与整个胎盘血管指数的相关性与一致性,为了解胎盘血流灌注提供一种方法。方法:对154例11~14周单胎妊娠胎盘进行3D-PDU检查,应用虚拟器官计算机辅助分析(virtual organ computer aided analysis,VOCAL)球体模式和手动模式分别记录4处球形感兴趣区及整个胎盘血管化指数(vascularization index,VI)、血流指数(flow index,FI)、血管化-血流指数(vascularization flow index,VFI),分析4处球形感兴趣区平均与整个胎盘相应指数的相关性与一致性。结果:球体模式获得局部胎盘(VI:38.60±14.31;FI:29.49±6.17;VFI:12.53±6.34)与手动模式获得整个胎盘(VI:38.93±13.86;FI:31.79±5.49;VFI:12.90±6.50)的血管指数均显著相关[r分别为0.978(P<0.001)、0.677(P<0.001)、0.963(P<0.001)];VI差异无统计学意义,VFI和FI差异有统计学意义(P<0.05)。结论:三维球体血管计算模式可作为评价整个胎盘血流灌注的有效替代。Objective： To investigate the correlation and agreement of placental vascular indices from sphere mode of three- dimensional power Doppler ultrasonography （3D-PDU） with those from the entire placenta. Methods： 3D-PDU examinations were performed in 154 singleton pregnancies at 11-14 weeks＇ gestation. Sphere mode and manual trace mode of virtual organ computer aided analysis （VOCAL） program were used to calculate the placental vascularization index （VI）, flow index （FI） and vascularization flow index （VFI） from stored images of each placenta by four spherical regions of interest and the whole placental. The mean values of each index from four spherical regions of interest were compared to those from the entire placenta to investigate the correlation and agreement. Results： All vascular indices from partial placental obtained by sphere mode [VI： 38.60±14.31; FI： 29.49±6.17; VFI： 12.53±6.34）] were significantly correlated with those from the whole placental [VI： 38.93±13.86; FI： 31.79±5.49; VFI： 12.90±6.50] [r=0.978 （P〈0.001）, 0.677 （P〈0.001）, 0.963（P〈0.001）, respectively]. The VI and VFI values obtained by the two modes were similar, and FI value was significantly different （P〈0.05）. Conclusion： Sphere mode may be a valid alternative for evaluation of the placental vascularization when visualization of the entire placenta is not feasible. VI value appears to be more reliable than FI and VFI values in sphere mode.

关 键 词：三维能量多普勒超声 胎盘 球体模式 

分 类 号：R445.1[医药卫生—影像医学与核医学]