公开(公告)号：US09726737B2

公开(公告)日：2017-08-08

申请号：US14261885

申请日：2014-04-25

申请人： General Electric Company

发明人： Thomas Grafendorfer ,  Fraser Robb ,  Greig Scott ,  Shreyas Vasanawala

IPC分类号： G01R33/36 ,  G01R33/3415

CPC分类号： G01R33/3685 ,  G01R33/3415

摘要： In accordance with various embodiments, a radio frequency (RF) coil array for use in a magnetic resonance imaging (MRI) system includes at least first and second RF coils. Each of the RF coils have a main body loop configured to at least one of transmit or receive RF energy at an operating imaging frequency in connection with acquiring MRI image data for an MRI system. The RF coil array also includes first and second cables configured to electrically couple the first and second RF coils, respectively, to a system interface. The RF coil array also includes a common ground connection between the first and second cables. The common ground connection is selectively positioned at a grounding point along lengths of the first and second cables to form a ground loop having a select self-resonance frequency (SRF) that differs from the imaging frequency of the MRI system.

公开(公告)号：US10520573B2

公开(公告)日：2019-12-31

申请号：US15481893

申请日：2017-04-07

申请人： GENERAL ELECTRIC COMPANY ,  THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY

发明人： Feiyu Chen ,  Tao Zhang ,  Joseph Y. Cheng ,  Valentina Taviani ,  Brian Hargreaves ,  John Pauly ,  Shreyas Vasanawala

IPC分类号： G01V3/00 ,  G01R33/561 ,  G01R33/48 ,  G01R33/565

摘要： A method for performing wave-encoded magnetic resonance imaging of an object is provided. The method includes applying one or more wave-encoded magnetic gradients to the object, and acquiring MR signals from the object. The method further includes calibrating a wave point-spread function, and reconstructing an image from the MR signals based at least in part on the calibrated wave point-spread function. Calibration of the wave point-spread function is based at least in part on one or more intermediate images generated from the MR signals.

公开(公告)号：US20140300359A1

公开(公告)日：2014-10-09

申请号：US14261885

申请日：2014-04-25

申请人： General Electric Company

发明人： Thomas Grafendorfer ,  Fraser Robb ,  Greig Scott ,  Shreyas Vasanawala

IPC分类号： G01R33/36 ,  G01R33/34

CPC分类号： G01R33/3685 ,  G01R33/3415

摘要： In accordance with various embodiments, a radio frequency (RF) coil array for use in a magnetic resonance imaging (MRI) system includes at least first and second RF coils. Each of the RF coils have a main body loop configured to at least one of transmit or receive RF energy at an operating imaging frequency in connection with acquiring MRI image data for an MRI system. The RF coil array also includes first and second cables configured to electrically couple the first and second RF coils, respectively, to a system interface. The RF coil array also includes a common ground connection between the first and second cables. The common ground connection is selectively positioned at a grounding point along lengths of the first and second cables to form a ground loop having a select self-resonance frequency (SRF) that differs from the imaging frequency of the MRI system.

摘要翻译： 根据各种实施例，用于磁共振成像（MRI）系统的射频（RF）线圈阵列至少包括第一和第二RF线圈。 每个RF线圈具有主体回路，该主体回路被配置为在获取用于MRI系统的MRI图像数据的操作成像频率处的发射或接收RF能量中的至少一个。 RF线圈阵列还包括被配置为将第一和第二RF线圈分别电耦合到系统接口的第一和第二电缆。 RF线圈阵列还包括第一和第二电缆之间的公共接地连接。 公共接地连接被选择性地定位在沿着第一和第二电缆的长度的接地点处，以形成具有与MRI系统的成像频率不同的选择自谐振频率（SRF）的接地回路。