摘要
目的评价四维B-flow联合时间-空间相关成像（STIC）技术在正常胎儿心血管系统中的临床应用价值。方法选择306胎孕20~39周正常胎儿,先在二维超声下进行常规扫查,然后进行B-flow显像及STIC数据采集。结果在306胎中,289胎在B-flow显像方式下STIC数据采集成功,采集成功率为94.44%（289/306）;所采集的容积数据通过重建可获得下列心外血管：主动脉弓、动脉导管弓、降主动脉、下腔静脉、静脉导管、肝静脉及肺静脉。B-flow联合STIC技术对≥1条、≥2条、≥3条和4条肺静脉的显示率分别为100%（289/289）、97.23%（281/289）、81.31%（235/289）、46.37%（134/289）,彩色多普勒超声的显示率分别为100%（289/289）、94.46%（273/289）、44.64%（129/289）、17.65%（51/289）,二维灰阶超声显示率分别为100%（289/289）、93.08%（269/289）、40.83%（118/289）、15.92%（46/289）。采用B-flow联合STIC技术对于3条及以上肺静脉和4条肺静脉的显示率明显高于二维灰阶超声与彩色多普勒超声（P均〈0.05）。结论 B-flow联合STIC技术能较好地显示血流速度较低的细小血管,如肺静脉。
Objective To observe the application value of four-dimensional（4D） B-flow spatio-temporal image correlation（B-flow-STIC） in visualizing fetal cardiovascular system.Methods Three hundreds and six normal single fetuses from 20 to 39 weeks of gestation were examined with 2D transducer.Then fetal cardiac blood flow was acquired with B-flow-STIC images.The cardiac vascular system was analyzed off-line on multiplanar and reconstructed 4D rendered images.Results Complete B-flow-STIC collection was obtained in 289 fetuses（289/306,94.44%）.All extracardiac vessels of aortic arch,ductus arteriosus arch,descending aorta,inferior vena cava,ductus venosus,hepatic vein and pulmonary veins could be detected on reconstructed 3D and 4D images.The displaying rate of pulmonary veins ≥1,≥2,≥3 and 4 with B-flow-STIC on was 100%（289/289）,97.23%（281/289）,81.31%（235/289） and 46.37%（134/289）,with color Doppler ultrasound was 100%（289/289）,94.46%（273/289）,44.64%（129/289） and 17.65%（51/289）,with 2D ultrasound was 100%（289/289）,93.08%（269/289）,40.83%（118/289） and 15.92%（46/289）,respectively.B-flow-STIC was better than color Doppler ultrasound and 2D ultrasound in display of pulmonary veins ≥3 and 4（all P0.05）.Conclusion B-flow-STIC allows visualization of cardiac blood vessel including fine small vessels with low velocity,such as pulmonary veins.
出处
《中国医学影像技术》
CSCD
北大核心
2011年第7期1439-1442,共4页
Chinese Journal of Medical Imaging Technology
基金
国家"十一五"科技支撑计划课题项目(2006BAI05A04)
