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公开(公告)号：US07379574B2
公开(公告)日：2008-05-27
申请号：US11004630
申请日：2004-12-02
申请人： Raghav Raman , Bhargav Raman , Sandy A. Napel , Geoffrey D. Rubin
发明人： Raghav Raman , Bhargav Raman , Sandy A. Napel , Geoffrey D. Rubin
CPC分类号： A61B5/02007 , A61B5/1076 , A61B6/481 , A61B6/504
摘要： A method to quantify the vascular irregularity of aortoiliac arteries is provided. Inner wall and/or outer wall outlines of a vessel of interest are determined. The cross sectional area is determined for the area outlined by each outline. Using this cross sectional area a shape is selected that has substantially the same area as the outline. Subsequently, the shape is fitted to the outline. In one aspect, the irregularity index is calculated as the ratio of the outline and the outline of the fitted shape. In another aspect, the irregularity index is calculated as the ratio of at least a part of the outline and the outline of the fitted shape that corresponds to the same part of the outline. The irregularity index is visualized using a color scheme, a range of numbers, or a set of labels.
摘要翻译： 提供了定量主动脉导管血管不规则性的方法。 确定感兴趣的血管的内壁和/或外墙轮廓。 确定每个轮廓所示区域的横截面面积。 使用该横截面积选择具有与轮廓基本相同的面积的形状。 随后，将形状装配到轮廓上。 在一个方面，不规则性指数被计算为轮廓和拟合形状的轮廓的比率。 在另一方面，不规则性指数被计算为轮廓的至少一部分与拟合形状的轮廓对应于轮廓的相同部分的比率。 使用配色方案，数量范围或一组标签可视化不规则性索引。
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公开(公告)号：US07471814B2
公开(公告)日：2008-12-30
申请号：US11004633
申请日：2004-12-02
申请人： Raghav Raman , Bhargav Raman , Sandy A. Napel , Geoffrey D. Rubin
发明人： Raghav Raman , Bhargav Raman , Sandy A. Napel , Geoffrey D. Rubin
CPC分类号： G06T15/08 , G06T5/50 , G06T7/12 , G06T2207/10081 , G06T2207/20012 , G06T2207/20132 , G06T2207/30008 , G06T2207/30101
摘要： A method to define a curved slab region of interest that includes vessels while maximally excluding surrounding soft tissue and bone is provided. The thickness of the curved slab is automatically adapted to the thickness of the vessel and follows the tortuous vessel(s) so that an increase in tortuousity does not result in a disproportionate increase in the region of interest required to enclose the vessel. A plurality of boundary pairs is determined in the view plane to define a vessel. Vessel-intensities are determined for each one of the boundary pairs. The boundary pairs with associated intensities define the view of the vessel in the projection plane. Context-intensity could be defined in the area surrounding the boundary pairs in the projection and/or transverse plane. The method also includes several steps that will result in a better isolation and removal of non-vessel structures and view of the vessel(s) and its(their) branches.
摘要翻译： 提供了一种限定包括血管的弯曲板状区域的方法，同时最大限度地排除了周围的软组织和骨骼。 弯曲板坯的厚度自动适应船舶的厚度并且跟随曲折的船只，使得曲折的增加不会导致围绕船只所需的感兴趣区域的不成比例的增加。 在视平面中确定多个边界对以限定容器。 确定每个边界对的容器强度。 具有相关联强度的边界对定义了投影平面中容器的视图。 可以在投影和/或横向平面中的边界对周围的区域中定义上下文强度。 该方法还包括几个步骤，其将导致更好地隔离和移除非血管结构并观察血管及其（它们）的分支。
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公开(公告)号：US20050180621A1
公开(公告)日：2005-08-18
申请号：US11004630
申请日：2004-12-02
申请人： Raghav Raman , Bhargav Raman , Sandy Napel , Geoffrey Rubin
发明人： Raghav Raman , Bhargav Raman , Sandy Napel , Geoffrey Rubin
CPC分类号： A61B5/02007 , A61B5/1076 , A61B6/481 , A61B6/504
摘要： A method to quantify the vascular irregularity of aortoiliac arteries is provided. Inner wall and/or outer wall outlines of a vessel of interest are determined. The cross sectional area is determined for the area outlined by each outline. Using this cross sectional area a shape is selected that has substantially the same area as the outline. Subsequently, the shape is fitted to the outline. In one aspect, the irregularity index is calculated as the ratio of the outline and the outline of the fitted shape. In another aspect, the irregularity index is calculated as the ratio of at least a part of the outline and the outline of the fitted shape that corresponds to the same part of the outline. The irregularity index is visualized using a color scheme, a range of numbers, or a set of labels.
摘要翻译： 提供了定量主动脉导管血管不规则性的方法。 确定感兴趣的血管的内壁和/或外墙轮廓。 确定每个轮廓所示区域的横截面面积。 使用该横截面积选择具有与轮廓基本相同的面积的形状。 随后，将形状装配到轮廓上。 在一个方面，不规则性指数被计算为轮廓和拟合形状的轮廓的比率。 在另一方面，不规则性指数被计算为轮廓的至少一部分与拟合形状的轮廓对应于轮廓的相同部分的比率。 使用配色方案，数量范围或一组标签可视化不规则性索引。
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公开(公告)号：US07330576B2
公开(公告)日：2008-02-12
申请号：US11003937
申请日：2004-12-02
申请人： Raghav Raman , Bhargav Raman , Sandy A. Napel , Geoffrey D. Rubin
发明人： Raghav Raman , Bhargav Raman , Sandy A. Napel , Geoffrey D. Rubin
IPC分类号： G06K9/00
CPC分类号： G06T7/0012 , G06T2200/24 , G06T2207/10081 , G06T2207/30101
摘要： A method that allows the quantification of the true mass of a calcium fragment located along a vessel is provided. The method is independent of the level of arterial contrast enhancement, does not require protocol-specific or scanner-specific calibration scans, and allows a detailed analysis of calcium distribution patterns. For each identified calcium fragment, the average intensity and volume is determined as a function of a plurality of intensity thresholds. Using these determined values brightness volume products are calculated for each of the plurality of intensity thresholds. The mass of a calcium segment is subsequently obtained from the calculated brightness volume products extrapolated at zero intensity and reference calcium parameters. The mass and volume of the calcium fragments could be visualized with respect to a vessel in a computer display.
摘要翻译： 提供了允许定量沿着血管的钙片段的真实质量的方法。 该方法与动脉造影增强水平无关，不需要协议特异性或扫描仪特异性校准扫描，并且可以详细分析钙分布模式。 对于每个确定的钙片段，平均强度和体积被确定为多个强度阈值的函数。 使用这些确定的值，对于多个强度阈值中的每一个计算亮度体积积。 随后从计算的在零强度外推的亮度体积乘积和参考钙参数获得钙段的质量。 相对于计算机显示器中的血管，钙碎片的质量和体积可以被可视化。
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公开(公告)号：US20050256400A1
公开(公告)日：2005-11-17
申请号：US11003584
申请日：2004-12-02
申请人： Bhargav Raman , Raghav Raman , Sandy Napel , Geoffrey Rubin
发明人： Bhargav Raman , Raghav Raman , Sandy Napel , Geoffrey Rubin
CPC分类号： G06T7/0012 , G06T2207/30101
摘要： A method for identifying a arteries and veins in a medical image is provided. A start point and endpoints of branches of a segmented tubular tree are identified. Distance maps for each of the endpoints relative to the startpoint are created. Then voxels in between the furthest of the endpoints and the startpoint are identified. This last step is iterated for the subsequent furthest of the endpoints. For each set of identified voxels parameters are identified. Examples of such parameters are cross sectional areas of the branches. The parameters for at least one each set of identified voxels are then used to anatomically label branches the segmented tubular tree, optionally with position information obtained from the image.
摘要翻译： 提供了用于识别医学图像中的动脉和静脉的方法。 识别分段管状树的分支的起始点和终点。 创建每个端点相对于起始点的距离图。 然后识别端点最远点与起始点之间的体素。 为后续最远的端点迭代最后一步。 对于每组识别的体素参数进行识别。 这些参数的示例是分支的横截面积。 然后使用至少一组每个识别的体素的参数来解剖学地标记分段管状树的分支，可选地使用从图像获得的位置信息。
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公开(公告)号：US20050195189A1
公开(公告)日：2005-09-08
申请号：US11004633
申请日：2004-12-02
申请人： Raghav Raman , Bhargav Raman , Sandy Napel , Geoffrey Rubin
发明人： Raghav Raman , Bhargav Raman , Sandy Napel , Geoffrey Rubin
CPC分类号： G06T15/08 , G06T5/50 , G06T7/12 , G06T2207/10081 , G06T2207/20012 , G06T2207/20132 , G06T2207/30008 , G06T2207/30101
摘要： A method to define a curved slab region of interest that includes vessels while maximally excluding surrounding soft tissue and bone is provided. The thickness of the curved slab is automatically adapted to the thickness of the vessel and follows the tortuous vessel(s) so that an increase in tortuousity does not result in a disproportionate increase in the region of interest required to enclose the vessel. A plurality of boundary pairs is determined in the view plane to define a vessel. Vessel-intensities are determined for each one of the boundary pairs. The boundary pairs with associated intensities define the view of the vessel in the projection plane. Context-intensity could be defined in the area surrounding the boundary pairs in the projection and/or transverse plane. The method also includes several steps that will result in a better isolation and removal of non-vessel structures and view of the vessel(s) and its(their) branches.
摘要翻译： 提供了一种限定包括血管的弯曲板状区域的方法，同时最大限度地排除了周围的软组织和骨骼。 弯曲板坯的厚度自动适应船舶的厚度并且跟随曲折的船只，使得曲折的增加不会导致围绕船只所需的感兴趣区域的不成比例的增加。 在视平面中确定多个边界对以限定容器。 确定每个边界对的容器强度。 具有相关联强度的边界对定义了投影平面中容器的视图。 可以在投影和/或横向平面中的边界对周围的区域中定义上下文强度。 该方法还包括几个步骤，其将导致更好地隔离和移除非血管结构并观察血管及其（它们）的分支。
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公开(公告)号：US20050195936A1
公开(公告)日：2005-09-08
申请号：US11003937
申请日：2004-12-02
申请人： Raghav Raman , Bhargav Raman , Sandy Napel , Geoffrey Rubin
发明人： Raghav Raman , Bhargav Raman , Sandy Napel , Geoffrey Rubin
CPC分类号： G06T7/0012 , G06T2200/24 , G06T2207/10081 , G06T2207/30101
摘要： A method that allows the quantification of the true mass of a calcium fragment located along a vessel is provided. The method is independent of the level of arterial contrast enhancement, does not require protocol-specific or scanner-specific calibration scans, and allows a detailed analysis of calcium distribution patterns. For each identified calcium fragment, the average intensity and volume is determined as a function of a plurality of intensity thresholds. Using these determined values brightness volume products are calculated for each of the plurality of intensity thresholds. The mass of a calcium segment is subsequently obtained from the calculated brightness volume products extrapolated at zero intensity and reference calcium parameters. The mass and volume of the calcium fragments could be visualized with respect to a vessel in a computer display.
摘要翻译： 提供了允许定量沿着血管的钙片段的真实质量的方法。 该方法与动脉造影增强水平无关，不需要协议特异性或扫描仪特异性校准扫描，并且可以详细分析钙分布模式。 对于每个确定的钙片段，平均强度和体积被确定为多个强度阈值的函数。 使用这些确定的值，对于多个强度阈值中的每一个计算亮度体积积。 随后从计算的在零强度外推的亮度体积乘积和参考钙参数获得钙段的质量。 相对于计算机显示器中的血管，钙碎片的质量和体积可以被可视化。
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