Automated quantification of flow velocity and volume in the ascending and descending aorta using flow velocity mapping
Automated quantification of flow velocity and volume in the ascending and descending aorta using flow velocity mapping
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DOI：
10.1109/cic.1995.482563
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发表时间：
1995-09
期刊：
影响因子：
--
通讯作者：
R. J. van der Geest;V. Buller;J. Reiber
中科院分区：
文献类型：
--
作者：
R. J. van der Geest;V. Buller;J. Reiber
磁共振血流速度图是一种非侵入性成像技术，用于定量测量血管横断面的速度和流量。积分整个心动周期的瞬时流量值，可准确评估通过特定血管横截面的每搏量。目前，在每个单独的时间范围内，使用人工轮廓跟踪方法来描绘血管边界。已经开发出一种自动方法，可以校正血管在心脏周期中的运动和形状变化。在对10名健康志愿者的升主动脉和降主动脉的研究中，将自动化方法的结果与手动跟踪等高线的结果进行了比较。在每搏量测量中观察到了良好的一致性(相关系数0.99)。每项研究的平均分析时间不到10秒。
MR flow velocity mapping is a non-invasive imaging technique for the quantification of velocity and flow in vessel cross-sections. Integrating the instantaneous flow values over the complete cardiac cycle results in accurate assessment of stroke volumes through a particular vessel cross-section. Currently, manual contour tracing methods are used to delineate the vessel borders in each individual time frame. An automated method has been developed which corrects both for motion and shape changes of the vessel over the cardiac cycle. The results of the automated method were compared to results derived from manually traced contours in studies of the ascending and descending aorta from ten healthy volunteers. An excellent agreement in stroke volume measurements was observed (correlation coefficient 0.99). The average analysis time per study was less than 10 seconds.