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首页> 外文期刊>Journal of Biomechanics >Dynamics of coronary artery curvature obtained from biplane cineangiograms.
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Dynamics of coronary artery curvature obtained from biplane cineangiograms.

机译:从双平面血管造影获得的冠状动脉曲率动力学。

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摘要

A system was developed to track the centerlines (axes) of human coronary arteries during the cardiac cycle from biplane cineangiograms. The system employs a time interpolation technique on one image plane and a smoothing technique on the other to create simultaneous image pairs. The image pairs are then used to reconstruct the three dimensional axes of the vessels during the cardiac cycle. Once the vessel axes are reconstructed, acceleration, velocity and geometric parameters such as curvature can be obtained. In the present work, a sequence of human angiograms is used to obtain the axial and temporal variation of the curvature of a portion of the left anterior descending coronary artery distal to the third diagonal branch during two cardiac cycles. For the case studied, the change in curvature during the cycle ranged from 0.25 to 1.8 cm(-1), depending upon the position of the site.
机译:开发了一种系统,可以从双平面血管造影图中跟踪心动周期中人冠状动脉的中心线(轴)。该系统在一个图像平面上采用时间插值技术,在另一图像平面上采用平滑技术,以创建同时的图像对。然后将图像对用于重构心动周期中血管的三维轴。重构血管轴后,即可获得加速度,速度和几何参数(例如曲率)。在当前的工作中,在两个心动周期中,使用人类血管造影照片序列来获取在第三对角分支远端的左前降支冠状动脉部分曲率的轴向和时间变化。对于所研究的情况,在循环过程中,曲率的变化范围为0.25至1.8 cm(-1),具体取决于站点的位置。

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