3-D reconstruction of coronary arterial tree to optimize angiographic visualization
3-D reconstruction of coronary arterial tree to optimize angiographic visualization
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DOI：
10.1109/42.848183
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发表时间：
2000-04-01
影响因子：
10.6
通讯作者：
Carroll, JD
中科院分区：
文献类型：
--
作者：
Chen, SJ;Carroll, JD
由于血管重叠和透视缩短，需要多次投影才能通过动脉造影充分评价冠状动脉树，只有在成功解决这些可视化问题后，才能最佳地进行基于导管的介入治疗。传统的方法提供多个选择的视图，其中重叠和透视缩短基于二维（2-D）投影被主观地最小化。选择一对常规血管造影研究中使用单平面成像系统在任意方向获得的图像进行三维（3-D）重建。在感兴趣的动脉段（例如，选择单个冠状动脉狭窄或分叉病变），计算一组最小化节段缩短的机架角度。多个计算机生成的投影图像与最小化的节段透视缩短，然后用于选择视图与最小重叠血管相对于感兴趣的节段。然后可以利用优化的视图来指导后续的血管造影采集和解释。800余例冠状动脉树重建，其中40余例是在心导管术中于室内完成的。使用8对不同的105 mm长冠状动脉内导丝血管造影片和8个15 mm间距的不透射线标记，证实3-D长度测量的准确性在平均均方根（rms）3.5%误差范围内。在20例LCA和20例RCA病例中，额外的计算机生成投影与实际采集视图之间的相似性的准确性得到了证明，平均均方根误差分别为3.09 mm和3.13 mm。重建的患者特异性3-D冠状动脉树模型的投影可用于规划最佳临床视图：最小重叠和透视缩短，病变长度和直径狭窄的评估可在介入病例和疾病进展和消退的研究中进行优化。
Due to vessel overlap and foreshortening, multiple projections are necessary to adequately evaluate the coronary tree with arteriography, Catheter-based interventions can only be optimally performed when these visualization problems are successfully solved. The traditional method provides multiple selected views in which overlap and foreshortening are subjectively minimized based on two dimensional (2-D) projections. A pair of images acquired from routine angiographic study at arbitrary orientation using a single-plane imaging system were chosen far three-dimensional (3-D) reconstruction. After the arterial segment of interest (e.g., a single coronary stenosis or bifurcation lesion) was selected, a set of gantry angulations minimizing segment foreshortening was calculated. Multiple computer-generated projection images with minimized segment foreshortening were then used to choose views with minimal overlapped vessels relative to the segment of interest. The optimized views could then be utilized to guide subsequent angiographic acquisition and interpretation. Over 800 cases of coronary arterial trees have been reconstructed, in which more than 40 cases were performed in room during cardiac catheterization. The accuracy of 3-D length measurement was confirmed to be within an average root-mean-square (rms) 3.5% error using eight different pairs of angiograms of an intracoronary guidewire of 105-mm length with eight radiopaque markers of 15-mm interdistance. The accuracy of similarity between the additional computer-generated projections versus the actual acquired views was demonstrated with the average rms errors of 3.09 mm and 3.13 mm in 20 LCA and 20 RCA cases, respectively. The projections of the reconstructed patient-specific 3-D coronary tree model can be utilized for planning optimal clinical views: minimal overlap and foreshortening, The assessment of lesion length and diameter narrowing can be optimized in both interventional cases and studies of disease progression and regression.