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20 条记录 (耗时 0.018 秒)

    Wireless-type RF coil apparatus comprising an RF transducer array and a magnetic field probe array
    11.
    发明授权
    Wireless-type RF coil apparatus comprising an RF transducer array and a magnetic field probe array 有权

    公开(公告)号：US10473738B2

    公开(公告)日：2019-11-12

    申请号：US15562049

    申请日：2016-03-24

    申请人： KONINKLIJKE PHILIPS N.V.

    发明人： George Randall Duensing ,  Arne Reykowski ,  Charles Saylor

    IPC分类号： G01R33/36 ,  G01R33/565 ,  G01R33/58 ,  G01R33/341 ,  G01R33/48 ,  G01R33/561

    摘要： A system for controlling a wireless-type radio frequency (RF) coil apparatus (102, 202, 302, 500) for a magnetic resonance (MR) system including a processor for acquiring emitted radio frequency (RF) signals from a plurality of coils of an RF transducer array including an indication of a local clock signal indicating a time of (RF) signal acquisition; acquiring magnetic field strength information from a plurality of field probes of a magnetic field probe array including an indication of the local clock signal indicating a time of magnetic field strength information acquisition, and forming k-space information based upon the acquired emitted RF signals from the plurality of coils of the RF transducer array and the acquired magnetic field strength information including the indications of the local clock signal.

    Inverse dispersive filter for dynamic range compression in MR
    12.
    发明授权
    Inverse dispersive filter for dynamic range compression in MR 有权

    公开(公告)号：US11209508B2

    公开(公告)日：2021-12-28

    申请号：US16973821

    申请日：2019-06-11

    申请人： KONINKLIJKE PHILIPS N.V.

    发明人： Arne Reykowski ,  George Randall Duensing

    IPC分类号： G01R33/36

    摘要： A radio frequency (RF) device for receiving or exciting a magnetic resonance (MR) signal includes an MR coil (22, 32) tuned to an MR frequency band, a digital signal processing chain (40, 44, 58, 70) at least partly tuned to operate at baseband, an analog signal processing chain (48, 50, 54, 60) operatively connected with the MR coil and at least partly tuned to operate at the MR frequency band, and an analog to digital (A/D) or digital-to-analog (D/A) converter (46, 56) connecting the digital signal processing chain and the analog signal processing chain. The analog signal processing chain includes an analog dispersive delay line (50, 60) tuned to impose a frequency-dependent signal delay (52, 62) that is monotonically increasing or monotonically decreasing over the MR frequency band. In more specific embodiments, the RF device may comprise an MR transmit chain (20), or an MR receive chain (30).

    MR IMAGING USING SHARED INFORMATION AMONG IMAGES WITH DIFFERENT CONTRAST
    15.
    发明申请
    MR IMAGING USING SHARED INFORMATION AMONG IMAGES WITH DIFFERENT CONTRAST 审中-公开
    在具有不同对比度的图像中使用共享信息的成像

    公开(公告)号：US20140239949A1

    公开(公告)日：2014-08-28

    申请号：US14352599

    申请日：2012-10-10

    申请人： KONINKLIJKE PHILIPS N.V.

    发明人： Feng Huang ,  George Randall Duensing ,  Wei Lin

    IPC分类号： G01R33/56

    CPC分类号： G01R33/56 ,  G01R33/243 ,  G01R33/246 ,  G01R33/543 ,  G01R33/5611 ,  G01R33/565 ,  G01R33/56509

    摘要： A method of magnetic resonance imaging includes performing a first magnetic resonance scan sequence which saves a data store, and performing a second magnetic resonance scan sequence which uses a data store from the first magnetic resonance scan sequence. A magnet (10) generates a B0 field in an examination region (12), a gradient coil system (14, 22) creates magnetic gradients in the examination region, and an RF system (16, 18, 20) induces resonance in and receives resonance signals from a subject in the examination region. One or more processors (30) are programmed to perform a magnetic resonance pre-scan sequence to generate pre-scan information, perform a first sequence to generate first sequence data, refine the pre-scan information with the first sequence data, perform a second imaging sequence to generate second sequence data. Further, the second sequence data is either reconstructed using the refined pre-scan information or performed using the refined pre-scan sequence information.

    摘要翻译： 磁共振成像的方法包括执行保存数据存储的第一磁共振扫描序列，以及执行使用来自第一磁共振扫描序列的数据存储的第二磁共振扫描序列。 磁体（10）在检查区域（12）中产生B0场，梯度线圈系统（14,22）在检查区域中产生磁梯度，RF系统（16,18,20）引起谐振并接收 来自检查区域中的受试者的共振信号。 一个或多个处理器（30）被编程为执行磁共振预扫描序列以产生预扫描信息，执行第一序列以产生第一序列数据，用第一序列数据细化预扫描信息，执行第二序列数据 成像序列以产生第二序列数据。 此外，使用精细的预扫描信息来重构第二序列数据或者使用精细的预扫描序列信息来执行。

    Multi-shot magnetic-resonance (MR) imaging system and method of operation thereof
    18.
    发明授权
    Multi-shot magnetic-resonance (MR) imaging system and method of operation thereof 有权

    公开(公告)号：US10386440B2

    公开(公告)日：2019-08-20

    申请号：US15322760

    申请日：2015-06-30

    申请人： KONINKLIJKE PHILIPS N.V.

    发明人： Feng Huang ,  George Randall Duensing ,  Bida Zhang

    IPC分类号： G01V3/00 ,  G01R33/565 ,  G01R33/48 ,  G01R33/563 ,  G01R33/56 ,  G01R33/561

    摘要： A magnetic resonance (MR) imaging (MRI) system (100, 1500), includes at least one controller (110, 1510) configured to: perform a multi-shot image acquisition process to acquire MR information for at least one multi-shot image set; train a convolution kernel including data on at least a portion of the MR information obtained without the use of the gradient or by using a self-training process. The convolution kernel includes convolution data. The MR information obtained with the use of a gradient for at least two of the image shots of the at least one multi-shot image set is iteratively convolved with the trained convolution kernel. The synthetic k-space data for the at least two image shots of the at least one multi-shot image set is projected into image space. The projected synthetic k-space data that are projected into the image space to form image information.

    Detachable receiver block comprising a digitizer for a family of local RF coils
    19.
    发明授权
    Detachable receiver block comprising a digitizer for a family of local RF coils 有权

    公开(公告)号：US10175312B2

    公开(公告)日：2019-01-08

    申请号：US14888114

    申请日：2014-04-22

    申请人： KONINKLIJKE PHILIPS N.V.

    发明人： George Randall Duensing ,  Olli T. Friman ,  Christopher Spencer ,  Drew Warren Humphreys

    IPC分类号： G01R33/36 ,  G01R33/34

    摘要： An apparatus includes a magnetic resonance (MR) receiver. The MR receiver includes at least one galvanic connector, at least one digitizer connected to the at least one galvanic connector, a power supply connected to the at least one digitizer, and a housing. The at least one galvanic connector connects in a connected configuration to a radio frequency (RF) coil element of at least one local RF coil to receive MR signals. The at least one digitizer converts the received MR signals to a digital format. The power supply provides power to operate the at least one digitizer. The housing is configured to removably attach to a housing of at least one local RF coil in the connected configuration to enclose the at least one galvanic connector and at least one digitizer with the housing and the attached the at least one local RF coil housing.