Reconstruction of 3D Catheter Paths from 2D X-Ray Projections
Reconstruction of 3D Catheter Paths from 2D X-Ray Projections
复制标题
根据 2D X 射线投影重建 3D 导管路径
DOI：
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发表时间：
1999
期刊：
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通讯作者：
M. Walz
中科院分区：
文献类型：
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作者：
H. Bender;R. Männer;C. Poliwoda;Stefan Roth;M. Walz
重症监护患者的诊断和治疗需要在患者胸腔内使用几根导管。关于病人体内导管的位置和路径的信息对医生来说是很重要的，但现在不是临床常规的一部分。这些信息的一个可能来源是CT或核磁共振扫描，这会导致组织开销和对重症监护患者的额外压力。为了最小化开销，我们实现了一种算法，从两张或多张标准x射线图像中提取患者体内导管的3D路径。该方法仅基于几个假设，完全在三维中运行，并且仅使用X射线图像作为路径重建过程的指导方针。它对x射线图像中的误导结构（如环路和交叉点）表现出固有的健壮性。该算法已通过选择测试图像进行测试，包括来自临床常规的图像。
The diagnosis and therapy of intensive care patients requires the usage of several catheters inside the patients chest. The information about the position and path of the catheters inside the patients body is important for the doctor, but is nowadays not part of the clinical routine. One possible source of this information are CT or NMR scans, which lead to an organizational overhead and additional stress for the intensive care patient. To minimize the overhead we implemented an algorithm to extract the 3D path of catheters in the body of the patient from two or more standard X-ray images. The approach is based on only few assumptions, runs completely in three dimensions, and uses the X- ray images only as a guideline for the path reconstruction process. It shows an inherently robust behaviour against misleading structures in the X-ray images, like loops and intersections. The algorithm has been tested with a selection of test images, including images from the clinical routine.