-
公开(公告)号：US20130131433A1
公开(公告)日：2013-05-23
申请号：US13521228
申请日：2011-01-05
申请人： Ulrich Katscher , Oliver Lips , Christian Findeklee , Christoph Leussler , Kay Nehrke , Daniel Wirtz , Johannes Adrianus Overweg
发明人： Ulrich Katscher , Oliver Lips , Christian Findeklee , Christoph Leussler , Kay Nehrke , Daniel Wirtz , Johannes Adrianus Overweg
IPC分类号： A61N5/10
CPC分类号： A61N5/1064 , A61B2017/00084 , A61B2090/374 , A61N1/403 , A61N5/10 , A61N5/1084 , A61N7/00 , A61N7/02 , A61N2005/007 , A61N2005/1055 , G01R33/4804 , G01R33/4808
摘要： The invention provides for a therapeutic apparatus comprising a tissue heating system (302, 480, 482). The therapeutic apparatus further comprises a magnetic resonance imaging system (300) for acquiring magnetic resonance thermometry data (366) from nuclei of a subject (318) located within an imaging volume (330). The therapeutic apparatus further comprises a radiation therapy system (304, 592) for irradiating an irradiation volume (316, 516) of the subject, wherein the irradiation volume is within the imaging volume. The therapeutic apparatus further comprises a controller (354) for controlling the therapeutic apparatus. The controller is adapted for acquiring (100, 210) magnetic resonance thermometry data repeatedly using the magnetic resonance imaging system. The controller is adapted for heating (102, 208) at least the irradiation volume using the tissue heating system. The heating is controlled using the magnetic resonance thermometry data. The controller is adapted for irradiating (104, 208) the irradiation volume.
摘要翻译： 本发明提供一种包括组织加热系统（302,480,482）的治疗设备。 治疗装置还包括用于从位于成像体积（330）内的对象（318）的核获取磁共振测温数据（366）的磁共振成像系统（300）。 治疗装置还包括用于照射受试者的照射体积（316,516）的放射治疗系统（304,592），其中照射体积在成像体积内。 治疗装置还包括用于控制治疗装置的控制器（354）。 控制器适于使用磁共振成像系统重复地获取（100,210）磁共振测温数据。 控制器适于使用组织加热系统加热（102,208）至少照射体积。 使用磁共振测温数据来控制加热。 控制器适于照射（104,208）照射体积。
-
公开(公告)号：US08938281B2
公开(公告)日：2015-01-20
申请号：US13496085
申请日：2010-09-27
IPC分类号： A61B5/05 , G01R33/561 , G01R33/565
CPC分类号： G01R33/5612 , G01R33/246 , G01R33/5659
摘要： The invention relates to a magnetic resonance imaging apparatus including an array of two or more RF antennas for transmitting RF pulses to and receiving MR signals from a subject positioned in an examination volume, and where the RF antennas have spatial transmit and receive sensitivity profiles. The apparatus is configured to control the temporal succession, the phase, and the amplitude of the RF feeding of each individual RF antenna. The apparatus is also configured to determine the phases and amplitudes from the spatial transmit sensitivity profiles of the RF antennas, and reconstruct a MR image from a combination of the received MR signals received via the individual RF antennas and from the spatial receive sensitivity profiles of the RF antennas. Further, the apparatus is configured to determine the spatial transmit sensitivity profiles of the RF antennas from the spatial receive sensitivity profiles of the RF antennas, or vice versa.
摘要翻译： 本发明涉及一种磁共振成像设备，包括两个或更多个RF天线的阵列，用于将RF脉冲发送到定位在检查体积中的被摄体并接收MR信号，并且其中RF天线具有空间发射和接收灵敏度分布。 该装置被配置为控制每个单独RF天线的RF馈送的时间连续性，相位和幅度。 该装置还被配置为根据RF天线的空间发射灵敏度分布来确定相位和振幅，并且从经由各个RF天线接收的接收的MR信号和从RF天线的空间接收灵敏度分布的组合重建MR图像 射频天线。 此外，该装置被配置为根据RF天线的空间接收灵敏度分布来确定RF天线的空间发射灵敏度分布，反之亦然。
-
3.发明授权公开(公告)号：US08698495B2
公开(公告)日：2014-04-15
申请号：US12933897
申请日：2009-03-26
IPC分类号： G01V3/00
CPC分类号： G01R33/586 , G01R33/246 , G01R33/3415 , G01R33/5612 , G01R33/56518 , G01R33/5659
摘要： A magnetic resonance method includes performing a plurality of magnetic resonance excitation operations each using a different sub-set of a set of radio frequency transmit coils (30), each sub-set including more than one radio frequency transmit coil, acquiring magnetic resonance data responsive to each said magnetic resonance excitation operation, and computing a B1 or flip angle map for each radio frequency transmit coil of the set of radio frequency transmit coils based on the acquired magnetic resonance data. A magnetic resonance method includes performing an actual flip angle mapping (AFI) sequence using a radio frequency transmit coil (32) with a ratio TR1:TR2 of the TR times of the AFI sequence selected to be rational, acquiring magnetic resonance data responsive to said AFI sequence, and computing a B1 or flip angle map for the radio frequency transmit coil based on the acquired magnetic resonance data.
摘要翻译： 磁共振方法包括使用一组射频发射线圈（30）的不同子集执行多个磁共振激励操作，每个子集包括多于一个射频发射线圈，响应于磁共振数据 到每个所述磁共振激励操作，以及基于所获取的磁共振数据计算所述射频发射线圈组中的每个射频发射线圈的B1或翻角图。 磁共振方法包括使用射频发射线圈（32）执行实际的翻转角映射（AFI）序列，其中AFI序列的TR次的比值TR1：TR2被选择为合理，获取响应于所述的 AFI序列，并且基于获取的磁共振数据计算用于射频发射线圈的B1或翻转角图。
-
公开(公告)号：US20120179023A1
公开(公告)日：2012-07-12
申请号：US13496085
申请日：2010-09-27
IPC分类号： A61B5/055
CPC分类号： G01R33/5612 , G01R33/246 , G01R33/5659
摘要： The invention relates to a magnetic resonance imaging apparatus comprising an array of two or more RF antennas (9) for transmitting RF pulses to and receiving MR signals from a body (7) of a patient positioned in an examination volume (2), the RF antennas (9) having spatial transmit and receive sensitivity profiles. The apparatus is arranged to: control the temporal succession, the phase, and the amplitude of the RF feeding of each individual RF antenna (9), the phases and amplitudes being determined from the spatial transmit sensitivity profiles of the RF antennas (9), and reconstruct a MR image from a combination of the received MR signals received via the individual RF antennas (9) and from the spatial receive sensitivity profiles of the RF antennas (9). The invention proposes that the apparatus is further arranged to: determine the spatial transmit sensitivity profiles of the RF antennas (9) from the spatial receive sensitivity profiles of the RF antennas (9), or determine the spatial receive sensitivity profiles of the RF antennas (9) from the spatial transmit sensitivity profiles of the RF antennas (9).
摘要翻译： 本发明涉及一种磁共振成像设备，其包括用于向位于检查体积（2）中的患者的身体（7）发送RF脉冲并从其接收MR信号的两个或更多个RF天线（9）的阵列，RF 天线（9）具有空间发射和接收灵敏度分布。 该装置被设置为：控制每个单独RF天线（9）的RF馈送的时间连续性，相位和幅度，根据RF天线（9）的空间发射灵敏度分布确定相位和幅度， 并且从经由各个RF天线（9）接收的接收的MR信号和RF天线（9）的空间接收灵敏度分布的组合重建MR图像。 本发明提出，该装置还被布置为：根据RF天线（9）的空间接收灵敏度分布来确定RF天线（9）的空间发射灵敏度分布，或者确定RF天线的空间接收灵敏度分布（ 9）从RF天线（9）的空间发射灵敏度分布图。
-
5.发明申请FLIP ANGLE IMAGING WITH IMPROVED B1 MAPPING FOR MULTI-RF TRANSMIT SYSTEMS 有权具有改进的用于多射频发射系统的B1映射的翻转角成像公开(公告)号：US20110026799A1
公开(公告)日：2011-02-03
申请号：US12933897
申请日：2009-03-26
IPC分类号： G06K9/00
CPC分类号： G01R33/586 , G01R33/246 , G01R33/3415 , G01R33/5612 , G01R33/56518 , G01R33/5659
摘要： A magnetic resonance method includes performing a plurality of magnetic resonance excitation operations each using a different sub-set of a set of radio frequency transmit coils (30), each sub-set including more than one radio frequency transmit coil, acquiring magnetic resonance data responsive to each said magnetic resonance excitation operation, and computing a B1 or flip angle map for each radio frequency transmit coil of the set of radio frequency transmit coils based on the acquired magnetic resonance data. A magnetic resonance method includes performing an actual flip angle mapping (AFI) sequence using a radio frequency transmit coil (32) with a ratio TR1:TR2 of the TR times of the AFI sequence selected to be rational, acquiring magnetic resonance data responsive to said AFI sequence, and computing a B1 or flip angle map for the radio frequency transmit coil based on the acquired magnetic resonance data.
摘要翻译： 磁共振方法包括使用一组射频发射线圈（30）的不同子集执行多个磁共振激励操作，每个子集包括多于一个射频发射线圈，响应于磁共振数据 到每个所述磁共振激励操作，以及基于所获取的磁共振数据计算所述射频发射线圈组中的每个射频发射线圈的B1或翻角图。 磁共振方法包括使用射频发射线圈（32）执行实际的翻转角映射（AFI）序列，其中AFI序列的TR次的比值TR1：TR2被选择为合理，获取响应于所述的 AFI序列，并且基于获取的磁共振数据计算用于射频发射线圈的B1或翻转角图。
-
公开(公告)号：US08736265B2
公开(公告)日：2014-05-27
申请号：US13063472
申请日：2009-09-10
申请人： Peter Boernert , Peter Koken , Kay Nehrke , Ulrich Katscher , Ingmar Graesslin
发明人： Peter Boernert , Peter Koken , Kay Nehrke , Ulrich Katscher , Ingmar Graesslin
IPC分类号： G01R33/34
CPC分类号： G01R33/583 , G01R33/246 , G01R33/3415 , G01R33/4838 , G01R33/5612 , G01R33/5659 , G01R33/586
摘要： The invention relates to a method of acquiring MRI image data comprising the following steps: performing a 3-dimensional B1 mapping of a first volume using a first voxel size, selecting an MRI protocol, performing the B1-shim in accordance with the MRI protocol, performing the MRI protocol to acquire MRI imaging data of a second volume using a second voxel size, wherein the first voxel size is larger than the second voxel size, wherein the first volume is larger than the second volume, and wherein the second volume is contained within the first volume.
摘要翻译： 本发明涉及一种获取MRI图像数据的方法，包括以下步骤：使用第一体素大小执行第一体积的3维B1映射，选择MRI协议，根据MRI协议执行B1-垫片， 执行MRI协议以使用第二体素尺寸获取第二体积的MRI成像数据，其中所述第一体素大小大于所述第二体素大小，其中所述第一体积大于所述第二体积，并且其中所述第二体积被包含 在第一卷内。
-
公开(公告)号：US20110156704A1
公开(公告)日：2011-06-30
申请号：US13063472
申请日：2009-09-10
申请人： Peter Boernert , Peter Koken , Kay Nehrke , Ulrich Katscher , Ingmar Graesslin
发明人： Peter Boernert , Peter Koken , Kay Nehrke , Ulrich Katscher , Ingmar Graesslin
IPC分类号： G01R33/34
CPC分类号： G01R33/583 , G01R33/246 , G01R33/3415 , G01R33/4838 , G01R33/5612 , G01R33/5659 , G01R33/586
摘要： The invention relates to a method of acquiring MRI image data comprising the following steps: performing a 3-dimensional B1 mapping of a first volume using a first voxel size, selecting an MRI protocol, performing the B1-shim in accordance with the MRI protocol, performing the MRI protocol to acquire MRI imaging data of a second volume using a second voxel size, wherein the first voxel size is larger than the second voxel size, wherein the first volume is larger than the second volume, and wherein the second volume is contained within the first volume.
摘要翻译： 本发明涉及一种获取MRI图像数据的方法，包括以下步骤：使用第一体素大小执行第一体积的3维B1映射，选择MRI协议，根据MRI协议执行B1-垫片， 执行MRI协议以使用第二体素尺寸获取第二体积的MRI成像数据，其中所述第一体素大小大于所述第二体素大小，其中所述第一体积大于所述第二体积，并且其中所述第二体积被包含 在第一卷内。
-
公开(公告)号：US09689945B2
公开(公告)日：2017-06-27
申请号：US13816305
申请日：2011-08-15
申请人： Kay Nehrke , Peter Boernert
发明人： Kay Nehrke , Peter Boernert
IPC分类号： G01V3/00 , G01R33/54 , G01R33/561 , G01R33/565
CPC分类号： G01R33/543 , G01R33/5612 , G01R33/5659
摘要： A virtual coil emulation method is used in a magnetic resonance imaging scan for acquiring a magnetic resonance image of an object (10). The scan is performed by an MR system (1) using a physical coil arrangement (9; 11; 12; 13) including a set of individual transmit coils. The coils are adapted for transmission of a desired RF transmit field to the object (10) for magnetic resonance spin excitation of the object (10). Each coil is associated with a physical transmit channel. The RF transmit field corresponds to a virtual arrangement of two or more of the coils. Virtual transmit channel properties include virtual transmit channel weights are assigned to the RF transmit field which describe the virtual complex RF field amplitudes with respect to each individual coil of the virtual coil arrangement to be applied to the physical coils (9; 11; 12; 13) for generating the RF transmit field.
-
9.发明申请COMPRESSED SENSING MR IMAGE RECONSTRUCTION USING CONSTRAINT FROM PRIOR ACQUISITION 有权使用来自先前收购的约束的压缩感测MR图像重建公开(公告)号：US20140009156A1
公开(公告)日：2014-01-09
申请号：US14006244
申请日：2012-02-28
申请人： Mariya Ivanova Doneva , Stefanie Remmele , Peter Bornert , Peter Mazurkewitz , Julien Senegas , Jochen Keupp , Kay Nehrke
发明人： Mariya Ivanova Doneva , Stefanie Remmele , Peter Bornert , Peter Mazurkewitz , Julien Senegas , Jochen Keupp , Kay Nehrke
IPC分类号： G01R33/56
CPC分类号： G01R33/56 , G01R33/4824 , G01R33/5608 , G01R33/5611 , G01R33/56509
摘要： The invention relates to a method of MR imaging of at least a portion of a body (10) of a patient placed in an examination volume of a MR device (1), the method comprising the steps of: subjecting the portion of the body (10) to a first imaging sequence for acquiring a first signal data set (21); subjecting the portion of the body (10) to a second imaging sequence for acquiring a second signal data set (23), wherein the imaging parameters of the second imaging sequence differ from the imaging parameters of the first imaging sequence; reconstructing a MR image from the second signal data set (23) by means of regularization using the first signal data set (21) as prior information. Moreover, the invention relates to a MR device (1) and to a computer program for a MR device (1).
摘要翻译： 本发明涉及放置在MR装置（1）的检查体积中的患者的身体（10）的至少一部分的MR成像方法，该方法包括以下步骤：对身体的部分（ 10）到用于获取第一信号数据集（21）的第一成像序列; 使所述身体（10）的所述部分经受第二成像序列以获取第二信号数据集（23），其中所述第二成像序列的成像参数与所述第一成像序列的成像参数不同; 通过使用第一信号数据集（21）的正则化作为先前信息，从第二信号数据集（23）重建MR图像。 此外，本发明涉及MR设备（1）和用于MR设备（1）的计算机程序。
-
公开(公告)号：US20110112392A1
公开(公告)日：2011-05-12
申请号：US13000386
申请日：2009-06-18
申请人： Peter Boernert , Jochen Keupp , Peter Koken , Kay Nehrke
发明人： Peter Boernert , Jochen Keupp , Peter Koken , Kay Nehrke
IPC分类号： A61B5/055
CPC分类号： G01R33/56375 , G01R33/56383
摘要： Magnetic resonance examination system comprises displaceable carrier for supporting an object to be examined. The carrier can be moved over a two dimensional area. The magnetic resonance examination system is configured to acquire sets of magnetic resonance signals from the object for various positions of the carrier in the two dimensional area.
摘要翻译： 磁共振检查系统包括用于支撑被检查物体的可移位载体。 载体可以在二维区域上移动。 磁共振检查系统被配置为从二维区域中的载体的各个位置获取来自物体的磁共振信号。
-
-
-
-
-
-
-
-
-
搜索结果
27 条记录 (耗时 0.027 秒)
