公开(公告)号：US20200058106A1

公开(公告)日：2020-02-20

申请号：US16541511

申请日：2019-08-15

申请人： Carole Lazarus ,  Prantik Kundu ,  Sunli Tang ,  Seyed Sadegh Moshen Salehi ,  Michal Sofka ,  Jo Schlemper ,  Hadrien A. Dyvorne ,  Rafael O'Halloran ,  Laura Sacolick ,  Michael Stephen Poole ,  Jonathan M. Rothberg

发明人： Carole Lazarus ,  Prantik Kundu ,  Sunli Tang ,  Seyed Sadegh Moshen Salehi ,  Michal Sofka ,  Jo Schlemper ,  Hadrien A. Dyvorne ,  Rafael O'Halloran ,  Laura Sacolick ,  Michael Stephen Poole ,  Jonathan M. Rothberg

IPC分类号： G06T5/00 ,  G06N3/04

摘要： Techniques for removing artefacts, such as RF interference and/or noise, from magnetic resonance data. The techniques include: obtaining input magnetic resonance (MR) data using at least one radio-frequency (RF) coil of a magnetic resonance imaging (MRI) system; and generating an MR image from input MR data at least in part by using a neural network model to suppress at least one artefact in the input MR data.

公开(公告)号：US20200034998A1

公开(公告)日：2020-01-30

申请号：US16524598

申请日：2019-07-29

申请人： Jo Schlemper ,  Seyed Sadegh Moshen Salehi ,  Michal Sofka ,  Prantik Kundu ,  Ziyi Wang ,  Carole Lazarus ,  Hadrien A. Dyvorne ,  Laura Sacolick ,  Rafael O'Halloran ,  Jonathan M. Rothberg

发明人： Jo Schlemper ,  Seyed Sadegh Moshen Salehi ,  Michal Sofka ,  Prantik Kundu ,  Ziyi Wang ,  Carole Lazarus ,  Hadrien A. Dyvorne ,  Laura Sacolick ,  Rafael O'Halloran ,  Jonathan M. Rothberg

IPC分类号： G06T11/00 ,  G06N3/04 ,  G06N3/08 ,  G06F17/14 ,  G01R33/56 ,  G01R33/561

摘要： A magnetic resonance imaging (MRI) system, comprising: a magnetics system comprising: a B0 magnet configured to provide a B0 field for the MRI system; gradient coils configured to provide gradient fields for the MRI system; and at least one RF coil configured to detect magnetic resonance (MR) signals; and a controller configured to: control the magnetics system to acquire MR spatial frequency data using non-Cartesian sampling; and generate an MR image from the acquired MR spatial frequency data using a neural network model comprising one or more neural network blocks including a first neural network block, wherein the first neural network block is configured to perform data consistency processing using a non-uniform Fourier transformation.

公开(公告)号：US20200033431A1

公开(公告)日：2020-01-30

申请号：US16524638

申请日：2019-07-29

申请人： Jo Schlemper ,  Seyed Sadegh Moshen Salehi ,  Michal Sofka ,  Prantik Kundu ,  Ziyi Wang ,  Carole Lazarus ,  Hadrien A. Dyvorne ,  Laura Sacolick ,  Rafael O'Halloran ,  Jonathan M. Rothberg

发明人： Jo Schlemper ,  Seyed Sadegh Moshen Salehi ,  Michal Sofka ,  Prantik Kundu ,  Ziyi Wang ,  Carole Lazarus ,  Hadrien A. Dyvorne ,  Laura Sacolick ,  Rafael O'Halloran ,  Jonathan M. Rothberg

IPC分类号： G01R33/56 ,  G06N3/04 ,  G06F17/18 ,  G06F17/14

摘要： A magnetic resonance imaging (MRI) system, comprising: a magnetics system comprising: a B0 magnet configured to provide a B0 field for the MRI system; gradient coils configured to provide gradient fields for the MRI system; and at least one RF coil configured to detect magnetic resonance (MR) signals; and a controller configured to: control the magnetics system to acquire MR spatial frequency data using non-Cartesian sampling; and generate an MR image from the acquired MR spatial frequency data using a neural network model comprising one or more neural network blocks including a first neural network block, wherein the first neural network block is configured to perform data consistency processing using a non-uniform Fourier transformation.

公开(公告)号：US20130229177A1

公开(公告)日：2013-09-05

申请号：US13600146

申请日：2012-08-30

申请人： Roland Bammer ,  Anh Tu Van ,  Rafael O'Halloran

发明人： Roland Bammer ,  Anh Tu Van ,  Rafael O'Halloran

IPC分类号： G01R33/56

CPC分类号： G01R33/56 ,  G01R33/5614 ,  G01R33/56341 ,  G01R33/56509 ,  G01R33/5676

摘要： Phase error in MR imaging is corrected in real time by providing adaptive RF pulses and corresponding adaptive magnetic field gradients to mitigate the effect of phase error in the imaging subject. A real time phase error map is obtained, and then adaptive RF pulses and corresponding field gradients are applied that remove the problematic effects of the phase error. Depending on details of the MR imaging mode being employed, there are several ways this removal can be done. Phase error can be cancelled by providing RF pulses that make the phase in the imaging subject uniform. Another approach is to make the adaptive RF pulses insensitive to the phase errors that are present.

摘要翻译： 通过提供自适应RF脉​​冲和相应的自适应磁场梯度来实时地校正MR成像中的相位误差，以减轻成像对象中的相位误差的影响。 获得实时相位误差图，然后应用自适应RF脉​​冲和相应的场梯度，消除相位误差的有问题的影响。 根据所采用的MR成像模式的细节，可以通过几种方式来实现这种移除。 可以通过提供使成像对象中的相位均匀的RF脉冲来消除相位误差。 另一种方法是使自适应RF脉​​冲对存在的相位误差不敏感。

公开(公告)号：US09329252B2

公开(公告)日：2016-05-03

申请号：US13600146

申请日：2012-08-30

申请人： Roland Bammer ,  Anh Tu Van ,  Rafael O'Halloran

发明人： Roland Bammer ,  Anh Tu Van ,  Rafael O'Halloran

IPC分类号： G01R33/56 ,  G01R33/563 ,  G01R33/565 ,  G01R33/561 ,  G01R33/567

CPC分类号： G01R33/56 ,  G01R33/5614 ,  G01R33/56341 ,  G01R33/56509 ,  G01R33/5676

摘要： Phase error in MR imaging is corrected in real time by providing adaptive RF pulses and corresponding adaptive magnetic field gradients to mitigate the effect of phase error in the imaging subject. A real time phase error map is obtained, and then adaptive RF pulses and corresponding field gradients are applied that remove the problematic effects of the phase error. Depending on details of the MR imaging mode being employed, there are several ways this removal can be done. Phase error can be cancelled by providing RF pulses that make the phase in the imaging subject uniform. Another approach is to make the adaptive RF pulses insensitive to the phase errors that are present.

摘要翻译： 通过提供自适应RF脉​​冲和相应的自适应磁场梯度来实时地校正MR成像中的相位误差，以减轻成像对象中的相位误差的影响。 获得实时相位误差图，然后应用自适应RF脉​​冲和相应的场梯度，消除相位误差的有问题的影响。 根据所采用的MR成像模式的细节，可以通过几种方式来实现这种移除。 可以通过提供使成像对象中的相位均匀的RF脉冲来消除相位误差。 另一种方法是使自适应RF脉​​冲对存在的相位误差不敏感。