摘要
目的探讨经胸多平面探头三维重建与实时三维超声心动图技术对房间隔缺损定性、定量的诊断价值。方法分别应用TTO探头及X4探头对15只离体猪心房间隔缺损模型进行采样后三维重建,以L1a、L2a剖视面对房间隔缺损进行观察;两种不同采样方式三维重建测量房间隔缺损长径、短径、面积与解剖实际测量值进行比较;同时比较两种三维技术在采样及重建及定性、定量分析时间过程中所耗时间。结果TTO-3DE和RT-3DE均可显示缺损的形态、部位及与周边结构的毗邻关系,两种方法的超声测量值与实测值差异无显著性意义(P>0.05),且与实测值均具有良好相关性,TTO-3DE采样时间远远长于RT-3DE,但重建及定性、定量分析所耗时间无显著性差异。结论TTO-3DE和RT-3DE能准确显示房间隔缺损的解剖结构信息,RT-3DE因其采样迅速、即时成像的特点,在指导外科手术和介入性治疗方面更具有实用意义。
Objective To evaluate qualitative and quantitive diagnosis of atrial septal defect （ASD） using real-time three-dimensional echocardiography （RT-3DE） compared with transthoracic omniplane three-dimensional echocardiographic （TTO-3DE） reconstruction measurement. Methods TTO-3DE and full volume RT-3DE were performed in 15 porcine hearts with ASDs （prium 3, secundum 12）. Reconstruction was done off-line with the Echo-View 4.2 and the 4D Cardio-View RT, respectively. The Lla and L2a cutting plane of 3DE were used for ASD evaluation. The diameters of short and long axis and the areas of ASD measured by TTO-3DE and full volume RT-3DE were compared with the values of direct anatomic measurements. The consuming time of both methods of TTO-3DE and full volume RT-3DE during the acquisitions and reconstructions were compared as well. Results The location, geometry, size, extent of ASDs could be displayed in both different type of 3DE. RT-3DE could visualized ASDs on-line. There were no significant difference （P〉0.05） among the measurement values by TTO-3DE, full volume RT-3DE and direct measurement. No significant difference between TTO-3DE and full volume RT-3DE in the time of reconstruction and ASD measurement. However, acquisition in TTO-3DE was more time consuming than that in RT-3DE. Conclusion TTO-3DE and RT-3DE could provide excellent display of ASD in unique enface projections. Compared with TTO-3DE, RT-3DE has advantages of instantly displaying ASD on-line, would have more potential application value both in the field of surgical and interventional treatment of congenital heart disease.
出处
《中国医学影像技术》
CSCD
北大核心
2005年第8期1161-1164,共4页
Chinese Journal of Medical Imaging Technology
基金
科技部"十五"攻关项目的资助(2004BA174B)。
关键词
超声心动描记术
三维
房间隔缺损
Echocardiography
Three-dimensional
Atrial septal defect
