ECG信号同期控制二维血流能量多普勒扫描所描绘的左心室轮廓线  

Boundary Drawing of Left Ventricle Using ECG Triggered Color Flow Imaging

作　　者：李太宝[1] 

机构地区：[1]南京大学电子科学与工程系声学所,南京市210093

出　　处：《中国超声医学杂志》2004年第11期878-880,共3页Chinese Journal of Ultrasound in Medicine

摘　　要：目的　提出以二维血流能量多普勒自动描画左心室轮廓线以定量评估左心室机能的一项新技术。方法　以心电图信号控制产生图像扫描的起始触发 ,将心搏动周期中同一时相位的图像相加并施以特别的阈值处理。结果　在彩超样机中得到了平滑逼真的左心室轮廓线。结论　这一新技术可以应用于临床 。Objective To show a new teclnique automatically drawing the boundary of the left ventricle based on two dimensional Doppler energy imaging.Methods In a prototype of medical ultrasound Doppler imaging scanner,the trigger of each Doppler energy image is given by ECG synchronization.All in phase images in different heart beat period are added up,but resetting the pixels back to zero when the sum is bigger than one given threshold.Results The boundary lines of the left ventricle showed up,once the function was switched on,and it got much smoothing gradually as more heart beating periods passed over.Conclusions Color flow imaging triggered each frame scan by ECG can do real time,high quality extraction of the boundary line of the left ventricle.

关 键 词：左心室 能量多普勒 血流 心电图 ECG信号 同期 彩超 期中 机能 结论 

分 类 号：R540.4[医药卫生—心血管疾病]