发明申请
US20090324012A1 SYSTEM AND METHOD FOR CONTOUR TRACKING IN CARDIAC PHASE CONTRAST FLOW MR IMAGES
有权
心脏跟踪流程MR图像中的轮廓跟踪的系统和方法
- 专利标题: SYSTEM AND METHOD FOR CONTOUR TRACKING IN CARDIAC PHASE CONTRAST FLOW MR IMAGES
- 专利标题(中): 心脏跟踪流程MR图像中的轮廓跟踪的系统和方法
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申请号: US12431299申请日: 2009-04-28
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公开(公告)号: US20090324012A1公开(公告)日: 2009-12-31
- 发明人: Ying Sun , Gareth Funka-Lea , Ravi Kumar , Jens Gühring
- 申请人: Ying Sun , Gareth Funka-Lea , Ravi Kumar , Jens Gühring
- 申请人地址: US NJ Princeton
- 专利权人: Siemens Corporate Research, Inc.
- 当前专利权人: Siemens Corporate Research, Inc.
- 当前专利权人地址: US NJ Princeton
- 主分类号: G06T7/00
- IPC分类号: G06T7/00 ; G06T7/20
摘要:
A method for tracking a contour in cardiac phase contrast flow magnetic resonance (MR) images includes estimating a global translation of a contour in a reference image in a time sequence of cardiac phase contrast flow MR images to a contour in a current image in the time sequence of images by finding a 2-dimensional translation vector that maximizes a similarity function of the contour in the reference image and the current image calculated over a bounding rectangle containing the contour in the reference image, estimating an affine transformation of the contour in the reference image to the contour in the current image, and performing a constrained local deformation of the contour in the current image.