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    • 4. 发明申请
    • 3D SEGMENTATION OF THE COLON IN MR COLONOGRAPHY
    • 在分层结构中对结肠的3D分割
    • WO2008097630A3
    • 2008-10-16
    • PCT/US2008001664
    • 2008-02-06
    • SIEMENS MEDICAL SOLUTIONSQIAN ZHENWOLF MATTHIASBOGONI LUCA
    • QIAN ZHENWOLF MATTHIASBOGONI LUCA
    • G06T7/00G06T5/00
    • G06T7/0012G06T7/12G06T7/149G06T2207/10088G06T2207/20101G06T2207/20116G06T2207/20168G06T2207/30032Y10S128/922
    • A method for segmenting a tubular structure includes providing a three-dimensional image including the tubular structure, providing at least one seed point within the tubular structure (101), fitting an initial cylinder into the tubular structure at the seed point (102), adding cylinder segments to the initial cylinder in forward and backward directions within the three-dimensional image of the tubular structure by tracking the cylinder model over the tubular structure (103), modeling each cylinder segment using parameters to account for a three-dimensional orientation, a radius, a length and a curvature, describing an intensity image of the tubular structure using a second model to represent an edge and intensity distribution of the tubular structure, fitting the parameters as the cylinder segment is added to the intensity image, and outputting cylinder segments as a segmentation of the tube (104). (Figure 1)
    • 一种用于分割管状结构的方法包括提供包括管状结构的三维图像,在管状结构(101)内提供至少一个种子点,在种子点(102)处将初始圆柱体装配到管状结构中,添加 通过跟踪所述管状结构(103)上的所述圆柱体模型在所述管状结构的所述三维图像内在所述管状结构的三维图像内沿前后方向将所述圆柱体段分成初始圆柱体,使用参数来对每个圆柱体分段进行建模以考虑三维取向, 半径,长度和曲率,使用第二模型描述管状结构的强度图像以表示管状结构的边缘和强度分布,当将圆柱段添加到强度图像时将参数拟合,并输出圆柱段 作为管(104)的分割。 (图1)