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    • 9. 发明申请
    • 3D Segmentation of the Colon in MR Colonography
    • MR结肠镜中结肠的3D分割
    • US20080187202A1
    • 2008-08-07
    • US12026002
    • 2008-02-05
    • Zhen QianMatthias WolfLuca Bogoni
    • Zhen QianMatthias WolfLuca Bogoni
    • A61B5/00
    • G06T7/0012G06T7/12G06T7/149G06T2207/10088G06T2207/20101G06T2207/20116G06T2207/20168G06T2207/30032Y10S128/922
    • A method for segmenting a tubular structure includes providing a three-dimensional image containing the tubular structure, providing at least one seed point within the tubular structure, fitting an initial cylinder into the tubular structure at the seed point, 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, 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.
    • 用于分割管状结构的方法包括提供包含管状结构的三维图像,在管状结构内提供至少一个种子点,将初始圆柱体在种子点处装配到管状结构中,将圆柱体段添加到初始圆柱体 在管状结构的三维图像内沿向前和向后的方向,通过在管状结构上跟踪圆柱模型,使用参数建模每个气缸段以考虑三维取向,半径,长度和曲率,描述 使用第二模型来表示管状结构的边缘和强度分布的管状结构的强度图像,将作为气缸段的参数拟合到强度图像中,并且作为管的分割输出气缸段。