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公开(公告)号：US20180136295A1
公开(公告)日：2018-05-17
申请号：US15850931
申请日：2017-12-21
发明人： Tony Tadic , Teodor Marius Stanescu
IPC分类号： G01R33/387 , G01R33/58 , G01R33/565 , G01R33/48
CPC分类号： G01R33/387 , G01R33/4808 , G01R33/56572 , G01R33/58
摘要： Various embodiments are described herein for an apparatus and a method for measuring and characterizing geometric distortions for a region of interest in images obtained using magnetic resonance. The method comprises deriving a computed set of 3D distortion vectors for a set of points within a region of interest covered by a phantom by using harmonic analysis to solve an associated boundary value problem based on boundary conditions derived from a measured set of 3D distortion vectors. The characterized image distortions may be used for various purposes such as for image correction or for shimming, for example.
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公开(公告)号：US10082550B2
公开(公告)日：2018-09-25
申请号：US15850931
申请日：2017-12-21
发明人： Tony Tadic , Teodor Marius Stanescu
IPC分类号： G01V3/00 , G01R33/387 , G01R33/565 , G01R33/58 , G01R33/48
CPC分类号： G01R33/387 , G01R33/4808 , G01R33/56572 , G01R33/58
摘要： Various embodiments are described herein for an apparatus and a method for measuring and characterizing geometric distortions for a region of interest in images obtained using magnetic resonance. The method comprises deriving a computed set of 3D distortion vectors for a set of points within a region of interest covered by a phantom by using harmonic analysis to solve an associated boundary value problem based on boundary conditions derived from a measured set of 3D distortion vectors. The characterized image distortions may be used for various purposes such as for image correction or for shimming, for example.
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公开(公告)号：US09857443B2
公开(公告)日：2018-01-02
申请号：US14212662
申请日：2014-03-14
发明人： Tony Tadic , Teodor Marius Stanescu
IPC分类号： G01V3/00 , G01R33/387 , G01R33/565 , G01R33/58 , G01R33/48
CPC分类号： G01R33/387 , G01R33/4808 , G01R33/56572 , G01R33/58
摘要： Various embodiments are described herein for an apparatus and a method for measuring and characterizing geometric distortions for a region of interest in images obtained using magnetic resonance. The method comprises deriving a computed set of 3D distortion vectors for a set of points within a region of interest covered by a phantom by using harmonic analysis to solve an associated boundary value problem based on boundary conditions derived from a measured set of 3D distortion vectors. The characterized image distortions may be used for various purposes such as for image correction or for shimming, for example.
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