3D Reconstruction of Tubular Structures from Three Orthogonal MRI Projections
3D Reconstruction of Tubular Structures from Three Orthogonal MRI Projections
复制标题
根据三个正交 MRI 投影对管状结构进行 3D 重建
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
N. Tsekos
中科院分区：
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作者：
Junmo An;Mahmut Unan;Karen Chin;D. Shah;A. Webb;I. Seimenis;N. Tsekos
本研究提出了一种用于管状结构（例如血管和导管）的3D成像的新方法。利用该方法，从相同体积的三个相互排斥的正交投影重建3D对象。在填充有T1缩短、Gd基造影剂嵌入基质的体模上评价该三平面投影成像（TPI）。在每个投影上分割出投影结构，并使用反投影算法生成管状结构的3D渲染图。通过比较TPI生成的3D管状结构的中心线与从相同体积的多层图像集提取的中心线，研究了该方法的准确性。两个管状结构在3D中匹配良好。通过进一步优化和减少采集时间，该方法可用于介入工具或血管的3D快速成像，并可应用于介入MRI。
This study presents a novel method for 3D imaging of tubular structures, such as blood vessels and catheters. With this method, the 3D object is reconstructed from three mutually exclusive orthogonal projections of the same volume. This triplanar projection imaging (TPI) was evaluated on a phantom filled with T1-shortening, Gd-based contrast agent embedded into a matrix. The projected structures were segmented out on each one of the projections and a backprojection algorithm was used to generate a rendering of the tubular structure in 3D. The accuracy of the method was investigated by comparing the centerline of the 3D tubular structure generated from TPI with the centerline extracted from a multislice set of images of the same volume. The two tubular structures were well matched in 3D. With further optimization and reduction of acquisition time, this method can be used for 3D fast imaging of interventional tools or blood vessels with applications in interventional MRI.