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1.发明授权公开(公告)号：US10545211B2
公开(公告)日：2020-01-28
申请号：US15635898
申请日：2017-06-28
IPC分类号： G01R33/565
摘要： The present disclosure provides a method and system for correcting errors caused by non-linearities in a gradient field profile of a gradient coil in a magnetic resonance imaging (MRI) system. The method includes obtaining a non-linearity tensor at each voxel within the imaging space using a computer model of the gradient coil; correcting motion sensitive encoding using the non-linearity tensor; and generating a corrected image using the corrected motion sensitive encoding.
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公开(公告)号：US20170192076A1
公开(公告)日：2017-07-06
申请号：US15102448
申请日：2015-09-04
申请人： Fergal KERINS , Timotheus Anton GMEINER , Jeff Alan STAINSBY , Chad Tyler HARRIS , Sheryl Rae THINGVOLD , Gregory Allan WHITTON
发明人： Fergal KERINS , Timotheus Anton GMEINER , Jeff Alan STAINSBY , Chad Tyler HARRIS , Sheryl Rae THINGVOLD , Gregory Allan WHITTON
IPC分类号： G01R33/58 , G01R33/563 , G01R33/48
CPC分类号： G01R33/58 , A61B5/055 , G01R33/4806 , G01R33/56341 , G09B23/30
摘要： Disclosed herein are cerebrospinal diffusion phantoms which include a housing having a shape and size configured for insertion into a magnetic resonance coil in one or more preselected poses. A scaffold support structure is mounted on an interior of said housing and a plurality of elongated diffusion mimicking members supported on the support array. The elongated diffusion mimicking members are affixed to the scaffold support structure such that elongated diffusion mimicking members extend in directions needed to substantially emulate a 3 dimensional arrangement of cerebrospinal diffusion fiber tracts in a living organism; as well as modules for elimination of resolution based-bias, angular accuracy evaluation, diffusion rate calibration, and quality assurance image referencing. Each elongated diffusion mimicking member includes an aqueous component which can undergo diffusion along the elongated diffusion mimicking member. The phantom includes a cerebrospinal tissue mimic matrix material contained in the housing enveloping the array of elongated diffusion mimicking members. The housing is made of a material whose magnetic susceptibility substantially matches that of the cerebrospinal mimic matrix material.
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公开(公告)号：US10314523B2
公开(公告)日：2019-06-11
申请号：US15513256
申请日：2014-11-14
申请人： Jeff Alan Stainsby , Gal Sela
发明人： Jeff Alan Stainsby , Gal Sela
IPC分类号： A61B5/11 , A61B5/055 , G01R33/56 , A61B34/20 , G01R33/54 , G01R33/58 , G01R33/28 , G06T7/00 , A61B90/00
摘要： A method, system and apparatus for image capture and registration are described. The method includes: obtaining a position of an imaging device in a tracking system frame of reference; obtaining a position of a patient in the tracking system frame of reference; determining, based on the position of the imaging device and the position of the patient, a transformation for registering an imaging device frame of reference with a patient frame of reference; receiving an instruction to capture an image, the instruction including coordinates identifying a target area in the patient frame of reference; applying the transformation to convert the coordinates to the imaging device frame of reference; and controlling the imaging device to capture an image based on the converted coordinates.
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公开(公告)号：US20190064301A1
公开(公告)日：2019-02-28
申请号：US15690795
申请日：2017-08-30
申请人： Andrew Thomas Curtis , Christopher Kumar Anand , Chad Tyler Harris , Jeff Alan Stainsby , Phil J. Beatty
发明人： Andrew Thomas Curtis , Christopher Kumar Anand , Chad Tyler Harris , Jeff Alan Stainsby , Phil J. Beatty
IPC分类号： G01R33/565 , G01R33/389
CPC分类号： G01R33/56509 , G01R33/3854 , G01R33/389
摘要： The present disclosure provides a method and system of magnetic resonance imaging using a constrained gradient waveform. The constrained gradient waveform is designed to have only predetermined frequencies, for example excluding one or more identified resonant frequencies associated with the MRI system. The application of such a constrained gradient waveform during imaging may aid in reducing noise, vibration and/or heating of the MRI system during imaging.
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公开(公告)号：US09880251B2
公开(公告)日：2018-01-30
申请号：US15102448
申请日：2015-09-04
申请人： Fergal Kerins , Timotheus Anton Gmeiner , Jeff Alan Stainsby , Chad Tyler Harris , Sheryl Rae Thingvold , Gregory Allan Whitton
发明人： Fergal Kerins , Timotheus Anton Gmeiner , Jeff Alan Stainsby , Chad Tyler Harris , Sheryl Rae Thingvold , Gregory Allan Whitton
IPC分类号： G01R33/58 , G01R33/48 , G01R33/563
CPC分类号： G01R33/58 , A61B5/055 , G01R33/4806 , G01R33/56341 , G09B23/30
摘要： Disclosed herein are cerebrospinal diffusion phantoms which include a housing having a shape and size configured for insertion into a magnetic resonance coil in one or more preselected poses. A scaffold support structure is mounted on an interior of said housing and a plurality of elongated diffusion mimicking members supported on the support array. The elongated diffusion mimicking members are affixed to the scaffold support structure such that elongated diffusion mimicking members extend in directions needed to substantially emulate a 3 dimensional arrangement of cerebrospinal diffusion fiber tracts in a living organism; as well as modules for elimination of resolution based-bias, angular accuracy evaluation, diffusion rate calibration, and quality assurance image referencing. Each elongated diffusion mimicking member includes an aqueous component which can undergo diffusion along the elongated diffusion mimicking member. The phantom includes a cerebrospinal tissue mimic matrix material contained in the housing enveloping the array of elongated diffusion mimicking members. The housing is made of a material whose magnetic susceptibility substantially matches that of the cerebrospinal mimic matrix material.
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6.发明申请公开(公告)号：US20170258375A1
公开(公告)日：2017-09-14
申请号：US15513256
申请日：2014-11-14
申请人： Jeff Alan STAINSBY , Gal SELA
发明人： Jeff Alan STAINSBY , Gal SELA
CPC分类号： A61B5/1127 , A61B5/055 , A61B34/20 , A61B2034/2055 , A61B2034/2065 , A61B2090/374 , G01R33/28 , G01R33/543 , G01R33/5608 , G01R33/58 , G06T7/0012 , G06T2207/10088
摘要： A method, system and apparatus for image capture and registration are described. The method includes: obtaining a position of an imaging device in a tracking system frame of reference; obtaining a position of a patient in the tracking system frame of reference; determining, based on the position of the imaging device and the position of the patient, a transformation for registering an imaging device frame of reference with a patient frame of reference; receiving an instruction to capture an image, the instruction including coordinates identifying a target area in the patient frame of reference; applying the transformation to convert the coordinates to the imaging device frame of reference; and controlling the imaging device to capture an image based on the converted coordinates.
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公开(公告)号：US10545212B2
公开(公告)日：2020-01-28
申请号：US15690795
申请日：2017-08-30
申请人： Andrew Thomas Curtis , Christopher Kumar Anand , Chad Tyler Harris , Jeff Alan Stainsby , Phil J. Beatty
发明人： Andrew Thomas Curtis , Christopher Kumar Anand , Chad Tyler Harris , Jeff Alan Stainsby , Phil J. Beatty
IPC分类号： G01R33/389 , G01R33/565
摘要： The present disclosure provides a method and system of magnetic resonance imaging using a constrained gradient waveform. The constrained gradient waveform is designed to have only predetermined frequencies, for example excluding one or more identified resonant frequencies associated with the MRI system. The application of such a constrained gradient waveform during imaging may aid in reducing noise, vibration and/or heating of the MRI system during imaging.
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8.发明申请公开(公告)号：US20190004137A1
公开(公告)日：2019-01-03
申请号：US15635898
申请日：2017-06-28
IPC分类号： G01R33/565
CPC分类号： G01R33/56509 , G01R33/56316 , G01R33/56341 , G01R33/56572
摘要： The present disclosure provides a method and system for correcting errors caused by non-linearities in a gradient field profile of a gradient coil in a magnetic resonance imaging (MRI) system. The method includes obtaining a non-linearity tensor at each voxel within the imaging space using a computer model of the gradient coil; correcting motion sensitive encoding using the non-linearity tensor; and generating a corrected image using the corrected motion sensitive encoding.
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公开(公告)号：US20170293005A1
公开(公告)日：2017-10-12
申请号：US14902221
申请日：2015-02-23
CPC分类号： G01R33/445 , A61B5/00 , A61B5/05 , G01R33/5602 , G01R33/56518
摘要： A delta-relaxation magnetic resonance imaging (DREMR) system is provided. The system includes a main field magnet and field shifting coils. A main magnetic field with a strength B0 can be generated using the main filed magnet and the strength B0 of the main magnetic field can be varied through the use of the field-shifting coils. The DREMR system can be used to perform signal acquisition based on a pulse sequence for acquiring at least one of T2*-weighted signals imaging; MR spectroscopy signals; saturation imaging signals and MR signals for fingerprinting. The MR signal acquisition can be augmented by varying the strength B0 of the main magnetic field for at least a portion of the pulse sequence used to acquire the MR signal.
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