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    System and method for guiding transcatheter aortic valve implantations based on interventional C-Arm CT imaging
    3.
    发明授权
    System and method for guiding transcatheter aortic valve implantations based on interventional C-Arm CT imaging 有权
    基于介入性C臂CT成像指导经导管主动脉瓣植入的系统和方法

    公开(公告)号：US08494245B2

    公开(公告)日：2013-07-23

    申请号：US12945045

    申请日：2010-11-12

    申请人： Rui Liao ,  Yefeng Zheng ,  Matthias John ,  Alois Nöttling ,  Jan Boese ,  Uwe Kirschstein

    发明人： Rui Liao ,  Yefeng Zheng ,  Matthias John ,  Alois Nöttling ,  Jan Boese ,  Uwe Kirschstein

    IPC分类号： G06K9/00

    CPC分类号： G06T19/00 ,  A61B6/032 ,  A61B6/4441 ,  A61B6/481 ,  A61B6/487 ,  A61B6/503 ,  A61B6/504 ,  A61B6/5235 ,  A61B6/54 ,  G06K2209/051 ,  G06T7/12 ,  G06T7/149 ,  G06T2207/10081 ,  G06T2207/20124 ,  G06T2207/30101 ,  G06T2219/028

    摘要： A method for guiding transcatheter aortic valve implantations includes receiving an interventional 3D image of an aortic root reconstructed from a sequence of 2D images acquired from a C-arm computed tomography (CT) system being rotated about a patient through a predetermined number of degrees, segmenting the aortic root and detecting aortic root landmarks in the 3D image, where the aortic root landmarks include three lowest points of aortic root cusps, two coronary artery ostia, and three commissures points where the cusps meet, cropping an area inside the segmented aortic root out of the 3D volume for volume rendering, centering the 3D image on an intersection of two orthogonal planes, each containing the two detected coronary ostia, that are orthogonal to a plane spanned by three lowest points of the aortic root cusps, and volume rendering the 3D cropped aortic root image together with the detected landmarks onto a 2D image.

    摘要翻译： 用于引导经导管主动脉瓣植入的方法包括接收从从围绕患者旋转预定数量度的C臂计算机断层摄影（CT）系统获取的2D图像序列重建的主动脉根部的介入3D图像，分割 主动脉根部并检测主动脉根部地标，其中主动脉根部地标包括主动脉根尖三个最低点，两个冠状动脉口和三个连接点，其中尖峰相遇，切除分段主动脉根部内的区域 的体积渲染的3D体积，将3D图像定位在两个正交平面的交点上，每个正交平面包含两个检测到的冠状动脉，与主动脉根尖的三个最低点跨越的平面垂直，并且体积渲染3D 将主动脉根部图像与检测到的标记一起裁剪到2D图像上。

    SYSTEM AND METHOD FOR GUIDING TRANSCATHETER AORTIC VALVE IMPLANTATIONS BASED ON INTERVENTIONAL C-ARM CT IMAGING
    4.
    发明申请
    SYSTEM AND METHOD FOR GUIDING TRANSCATHETER AORTIC VALVE IMPLANTATIONS BASED ON INTERVENTIONAL C-ARM CT IMAGING 有权
    基于传统C-ARM CT成像的导管动脉瓣植入系统及方法

    公开(公告)号：US20110222750A1

    公开(公告)日：2011-09-15

    申请号：US12945045

    申请日：2010-11-12

    申请人： Rui Liao ,  Yefeng Zheng ,  Matthias John ,  Alois Nöttling ,  Jan Boese ,  Uwe Kirschstein

    发明人： Rui Liao ,  Yefeng Zheng ,  Matthias John ,  Alois Nöttling ,  Jan Boese ,  Uwe Kirschstein

    IPC分类号： G06K9/00

    CPC分类号： G06T19/00 ,  A61B6/032 ,  A61B6/4441 ,  A61B6/481 ,  A61B6/487 ,  A61B6/503 ,  A61B6/504 ,  A61B6/5235 ,  A61B6/54 ,  G06K2209/051 ,  G06T7/12 ,  G06T7/149 ,  G06T2207/10081 ,  G06T2207/20124 ,  G06T2207/30101 ,  G06T2219/028

    摘要： A method for guiding transcatheter aortic valve implantations includes receiving an interventional 3D image of an aortic root reconstructed from a sequence of 2D images acquired from a C-arm computed tomography (CT) system being rotated about a patient through a predetermined number of degrees, segmenting the aortic root and detecting aortic root landmarks in the 3D image, where the aortic root landmarks include three lowest points of aortic root cusps, two coronary artery ostia, and three commissures points where the cusps meet, cropping an area inside the segmented aortic root out of the 3D volume for volume rendering, centering the 3D image on an intersection of two orthogonal planes, each containing the two detected coronary ostia, that are orthogonal to a plane spanned by three lowest points of the aortic root cusps, and volume rendering the 3D cropped aortic root image together with the detected landmarks onto a 2D image.

    摘要翻译： 用于引导经导管主动脉瓣植入的方法包括接收从从围绕患者旋转预定数量度的C臂计算机断层摄影（CT）系统获取的2D图像序列重建的主动脉根部的介入3D图像，分割 主动脉根部并检测主动脉根部地标，其中主动脉根部地标包括主动脉根尖三个最低点，两个冠状动脉口和三个连接点，其中尖峰相遇，切除分段主动脉根部内的区域 的体积渲染的3D体积，将3D图像定位在两个正交平面的交点上，每个正交平面包含两个检测到的冠状动脉，与主动脉根尖的三个最低点跨越的平面垂直，并且体积渲染3D 将主动脉根部图像与检测到的标记一起裁剪到2D图像上。

    Method and System for Efficient Extraction of a Silhouette of a 3D Mesh
    9.
    发明申请
    Method and System for Efficient Extraction of a Silhouette of a 3D Mesh 有权
    一种3D网格剪影效率提取的方法与系统

    公开(公告)号：US20120069017A1

    公开(公告)日：2012-03-22

    申请号：US13235802

    申请日：2011-09-19

    申请人： Yefeng Zheng ,  Yu Pang ,  Rui Liao ,  Matthias John ,  Jan Boese ,  Shaohua Kevin Zhou ,  Dorin Comaniciu

    发明人： Yefeng Zheng ,  Yu Pang ,  Rui Liao ,  Matthias John ,  Jan Boese ,  Shaohua Kevin Zhou ,  Dorin Comaniciu

    IPC分类号： G06T17/00

    CPC分类号： G06T17/20 ,  G06T7/12 ,  G06T7/181

    摘要： A method and system for extracting a silhouette of a 3D mesh representing an anatomical structure is disclosed. The 3D mesh is projected to two dimensions. Silhouette candidate edges are generated in the projected mesh by pruning edges and mesh points based on topology analysis of the projected mesh. Each silhouette candidate edge that intersects with another edge in the projected mesh is split into two silhouette candidate edges. The silhouette is extracted using an edge following process on the silhouette candidate edges.

    摘要翻译： 公开了一种用于提取表示解剖结构的3D网格的轮廓的方法和系统。 3D网格投影到两个维度。 通过基于投影网格的拓扑分析修剪边缘和网格点，在投影网格中生成剪影候选边缘。 与投影网格中的另一边缘相交的每个剪影候选边缘被分割成两个轮廓候选边缘。 使用轮廓候选边缘上的边缘跟随过程提取轮廓。