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公开(公告)号：US20050113679A1
公开(公告)日：2005-05-26
申请号：US10723192
申请日：2003-11-25
申请人： Srikanth Suryanarayanan , Rakesh Mullick , Yogisha Mallya , Vidya Pundalik Kamath , Nithin Nagaraj
发明人： Srikanth Suryanarayanan , Rakesh Mullick , Yogisha Mallya , Vidya Pundalik Kamath , Nithin Nagaraj
CPC分类号： G06K9/346 , A61B6/032 , A61B6/4085 , A61B6/481 , A61B6/504 , G06K2009/00932 , G06K2209/05 , G06T5/50 , G06T7/0012 , G06T7/11 , G06T7/12 , G06T7/174 , G06T7/187 , G06T2207/10081 , G06T2207/20012 , G06T2207/20156 , G06T2207/20224 , G06T2207/30008 , G06T2207/30101
摘要： A technique is provided for automatically generating a bone mask in CTA angiography. In accordance with the technique, an image data set may be pre-processed to accomplish a variety of function, such as removal of image data associated with the table, partitioning the volume into regionally consistent sub-volumes, computing structures edges based on gradients, and/or calculating seed points for subsequent region growing. The pre-processed data may then be automatically segmented for bone and vascular structure. The automatic vascular segmentation may be accomplished using constrained region growing in which the constraints are dynamically updated based upon local statistics of the image data. The vascular structure may be subtracted from the bone structure to generate a bone mask. The bone mask may in turn be subtracted from the image data set to generate a bone-free CTA volume for reconstruction of volume renderings.
摘要翻译： 提供了一种在CTA血管造影术中自动生成骨膜的技术。 根据该技术，可以对图像数据集进行预处理以完成各种功能，例如移除与该表相关联的图像数据，将该卷分割成区域一致的子体积，基于梯度计算结构边缘， 和/或计算用于随后区域生长的种子点。 然后可以将预处理的数据自动分割用于骨骼和血管结构。 可以使用受限区域增长来实现自动血管分割，其中基于图像数据的局部统计动态地更新约束。 可以从骨结构中减去血管结构以产生骨掩模。 可以从图像数据集中减去骨掩模以产生用于重建体积渲染的无骨CTA体积。
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公开(公告)号：US07676257B2
公开(公告)日：2010-03-09
申请号：US10723192
申请日：2003-11-25
申请人： Srikanth Suryanarayanan , Rakesh Mullick , Yogisha Mallya , Vidya Pundalik Kamath , Nithin Nagaraj
发明人： Srikanth Suryanarayanan , Rakesh Mullick , Yogisha Mallya , Vidya Pundalik Kamath , Nithin Nagaraj
CPC分类号： G06K9/346 , A61B6/032 , A61B6/4085 , A61B6/481 , A61B6/504 , G06K2009/00932 , G06K2209/05 , G06T5/50 , G06T7/0012 , G06T7/11 , G06T7/12 , G06T7/174 , G06T7/187 , G06T2207/10081 , G06T2207/20012 , G06T2207/20156 , G06T2207/20224 , G06T2207/30008 , G06T2207/30101
摘要： A technique is provided for automatically generating a bone mask in CTA angiography. In accordance with the technique, an image data set may be pre-processed to accomplish a variety of function, such as removal of image data associated with the table, partitioning the volume into regionally consistent sub-volumes, computing structures edges based on gradients, and/or calculating seed points for subsequent region growing. The pre-processed data may then be automatically segmented for bone and vascular structure. The automatic vascular segmentation may be accomplished using constrained region growing in which the constraints are dynamically updated based upon local statistics of the image data. The vascular structure may be subtracted from the bone structure to generate a bone mask. The bone mask may in turn be subtracted from the image data set to generate a bone-free CTA volume for reconstruction of volume renderings.
摘要翻译： 提供了一种在CTA血管造影术中自动生成骨膜的技术。 根据该技术，可以对图像数据集进行预处理以完成各种功能，例如移除与该表相关联的图像数据，将该卷分割成区域一致的子体积，基于梯度计算结构边缘， 和/或计算用于随后区域生长的种子点。 然后可以将预处理的数据自动分割用于骨骼和血管结构。 可以使用受限区域增长来实现自动血管分割，其中基于图像数据的局部统计动态地更新约束。 可以从骨结构中减去血管结构以产生骨掩模。 可以从图像数据集中减去骨掩模以产生用于重建体积渲染的无骨CTA体积。
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