从血管内超声序列和x线血管造影中重建血管

Sun Zheng
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引用次数: 6

摘要

本文提出了一种利用血管内超声(IVUS)图像序列和x线血管图像重建血管的方法。根据IVUS介入过程中获得的血管造影图像对,对IVUS导管的回拉路径进行跟踪和重构。从IVUS框架以半自动的方式检测血管壁的横截面边界。IVUS框架沿IVUS导管三维回拉路径确定轴向位置后,根据Frenet-Serret框架模型和全局优化确定其空间方向。最后,利用实体建模技术对血管进行精确重构。实验结果与临床数据验证了该方法的有效性。
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Three-Dimensional Reconstruction of Vessels from Intravascular Ultrasound Sequence and X-Ray Angiograms
A method to reconstruct vessels from intravascular ultrasound (IVUS) image sequence and X-ray angiograms is proposed in this paper. The pullback path of IVUS catheter is tracked and reconstructed from angiographic image pair acquired during IVUS intervention. Cross-sectional borders of the vessel wall are detected from IVUS frames in a semi- automatic manner. After axial locations of IVUS frames are determined along the 3D pullback path of IVUS catheter, their spatial orientations are determined based on a Frenet-Serret frame model and global optimization. Finally, the vessel is accurately reconstructed with solid modeling technique. Experimental results with clinical data demonstrate the validity.
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