公开(公告)号：US07221160B2

公开(公告)日：2007-05-22

申请号：US10517929

申请日：2003-06-10

申请人： Christoph Günther Leussler ,  Peter Börnert

发明人： Christoph Günther Leussler ,  Peter Börnert

IPC分类号： G01V3/00

CPC分类号： G01R33/3415 ,  G01R33/5611

摘要： An MR device for MR imaging includes an RF coil system. In order to enable switching to and fro between different applications in such an MR device without having to move the patient so as to position a new RF coil system, it is proposed to provide the RF coil system for the transmission and/or reception of RF signals with at least two RF coil arrays which are integrated in one coil former and have been optimized for different applications, each RF coil array comprising at least two RF coils which are decoupled from one another.

摘要翻译： 用于MR成像的MR装置包括RF线圈系统。 为了实现这种MR装置中的不同应用之间来回切换而不必移动患者以便定位新的RF线圈系统，建议提供用于RF和RF的RF线圈系统的发送和/或接收 具有至少两个RF线圈阵列的信号，其集成在一个线圈形成器中并且已经针对不同的应用进行了优化，每个RF线圈阵列包括彼此分离的至少两个RF线圈。

公开(公告)号：US07332909B2

公开(公告)日：2008-02-19

申请号：US10554120

申请日：2004-04-13

申请人： Tobias Schäffter ,  Holger Eggers ,  Peter Börnert

发明人： Tobias Schäffter ,  Holger Eggers ,  Peter Börnert

IPC分类号： G01V3/00

CPC分类号： G01R33/56554 ,  G01R33/565 ,  G01R33/56536

摘要： A method for generating an MR image of an object situated in an examination volume of an MR apparatus begins with the acquisition of a plurality of echo signals having at least two different echo-time values (t1, t2, t3). The echo signals are generated from high-frequency pulses and magnetic-field gradient pulses by an imaging sequence. An intermediate MR image (5, 6, 7) is then reconstructed for each echo-time value (t1, t2, t3). By analyzing these intermediate MR images (5, 6, 7), local relaxation times (T2*(x)) and/or local frequency shifts (Δω(x)) are determined by taking account of the respective echo-time values (t1, t2, t3). Finally, a definitive MR image (11) is reconstructed from the echo signals (1) in their entirety.

摘要翻译： 用于产生位于MR装置的检查卷中的对象的MR图像的方法从获取具有至少两个不同回波时间值（t 1，t 2，t 3）的多个回波信号开始。 回波信号通过成像序列从高频脉冲和磁场梯度脉冲产生。 然后针对每个回波时间值（t 1，t 2，t 3）重建中间MR图像（5,6,7）。 通过分析这些中间MR图像（5,6,7），通过考虑相应的回波时间值来确定局部弛豫时间（T 2 *（x））和/或局部频移（Deltaomega（x）） t 1，t 2，t 3）。 最后，从回波信号（1）整体重建确定的MR图像（11）。

公开(公告)号：US09709644B2

公开(公告)日：2017-07-18

申请号：US14112183

申请日：2012-04-12

申请人： Jinnan Wang ,  Peter Börnert ,  Chun Yuan

发明人： Jinnan Wang ,  Peter Börnert ,  Chun Yuan

IPC分类号： G01V3/00 ,  G01R33/30 ,  G01R33/563

CPC分类号： G01R33/30 ,  G01R33/56316 ,  G01R33/5635

摘要： A black blood magnetic resonance imaging sequence is performed using a magnetic resonance scanner. The sequence includes: applying a first flow sensitization gradient; applying a spoiler gradient after applying the first flow sensitization gradient; applying a second flow sensitization gradient after applying the spoiler gradient wherein the second flow sensitization gradient has area equal to the first flow sensitization gradient but of opposite polarity; applying a slice-selective radio frequency excitation pulse after applying the spoiler gradient; and performing a magnetic resonance readout after applying the second flow sensitization gradient and after applying the slice selective radio frequency excitation. The readout acquires magnetic resonance imaging data having blood signal suppression in the region excited by the slice-selective radio frequency excitation pulse. The magnetic resonance imaging data is suitably reconstructed to generate a black blood image that may be displayed.

公开(公告)号：US09529065B2

公开(公告)日：2016-12-27

申请号：US14112135

申请日：2012-04-12

申请人： Jinnan Wang ,  Huijun Chen ,  Peter Börnert ,  Chun Yuan

发明人： Jinnan Wang ,  Huijun Chen ,  Peter Börnert ,  Chun Yuan

IPC分类号： G01V3/00 ,  G01R33/48 ,  G01R33/563

CPC分类号： G01R33/48 ,  G01R33/56316 ,  G01R33/5635

摘要： Interleaved black/bright imaging (IBBI) is performed using a magnetic resonance (MR) scanner wherein the black blood module of the IBBI includes: applying a first flow sensitization gradient; applying a spoiler gradient after applying the first flow sensitization gradient; applying a second flow sensitization gradient after applying the spoiler gradient wherein the second flow sensitization gradient has area equal to the first flow sensitization gradient but of opposite polarity; applying a slice selective radio frequency excitation pulse after applying the spoiler gradient; and performing a MR readout after applying the second flow sensitization gradient and after applying the slice selective radio frequency excitation wherein the readout acquires MR imaging data having blood signal suppression in the region excited by the slice selective radio frequency excitation pulse. The MR imaging data having blood signal suppression is reconstructed to generate black blood images, and MR imaging data generated by bright blood modules of the IBBI is reconstructed to generate bright blood images.

摘要翻译： 使用磁共振（MR）扫描器进行交错黑/亮成像（IBBI），其中IBBI的黑血模块包括：施加第一流感敏化梯度; 在应用第一流感敏化梯度后应用扰流板梯度; 在施加扰流板梯度之后施加第二流动增感梯度，其中第二流动增感梯度具有等于第一流动增感梯度但具有相反极性的面积; 应用扰流板梯度后应用切片选择性射频激励脉冲; 以及在应用所述第二流敏增强梯度之后并且在施加所述切片选择性射频激发之后执行MR读出，其中所述读出器获取在由所述切片选择性射频激励脉冲激发的区域中具有血液信号抑制的MR成像数据。 重建具有血液信号抑制的MR成像数据以产生黑血图像，并且重建由IBBI的亮血模块产生的MR成像数据以产生明亮的血液图像。

公开(公告)号：US06777935B2

公开(公告)日：2004-08-17

申请号：US10306600

申请日：2002-11-27

申请人： Kay Nehrke ,  Peter Börnert

发明人： Kay Nehrke ,  Peter Börnert

IPC分类号： G01V300

CPC分类号： G01R33/5676

摘要： The invention relates to an MR method in which a navigator pulse is generated to excite a nuclear magnetization in a spatially limited volume by at least one RF pulse and at least two gradient magnetic fields having gradients which extend differently in respect of time and space. After the navigator pulse excitation, at least one MR signal is received from the volume in conjunction with a further gradient magnetic field for evaluation. In order to enhance the navigator pulse, a variation in time is imposed on the gradient magnetic fields in order to generate at least two MR signals which correspond to an excitation in the k space along mutually offset trajectories. The MR signals are combined.

摘要翻译： 本发明涉及一种MR方法，其中产生导航脉冲以通过至少一个RF脉冲激励空间有限体积中的核磁化，并且至少两个梯度磁场具有相对于时间和空间不同地延伸的梯度。 在导航器脉冲激励之后，至少一个MR信号与另外一个用于评估的梯度磁场一起从该体积中接收。 为了增强导航脉冲，对梯度磁场施加时间变化，以便产生对应于相互偏移轨迹的k空间中的激励的至少两个MR信号。 MR信号被组合。

公开(公告)号：US09733328B2

公开(公告)日：2017-08-15

申请号：US14006244

申请日：2012-02-28

申请人： Mariya Ivanova Doneva ,  Stefanie Remmele ,  Peter Börnert ,  Peter Mazurkewitz ,  Julien Senegas ,  Jochen Keupp ,  Kay Nehrke

发明人： Mariya Ivanova Doneva ,  Stefanie Remmele ,  Peter Börnert ,  Peter Mazurkewitz ,  Julien Senegas ,  Jochen Keupp ,  Kay Nehrke

IPC分类号： G01R33/56 ,  G01R33/561 ,  G01R33/48 ,  G01R33/565

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).

公开(公告)号：US06545472B2

公开(公告)日：2003-04-08

申请号：US09814391

申请日：2001-03-21

申请人： Klaas Paul Prüssmann ,  Markus Weiger ,  Peter Börnert

发明人： Klaas Paul Prüssmann ,  Markus Weiger ,  Peter Börnert

IPC分类号： G01V300

CPC分类号： G01R33/5611 ,  G01R33/5635

摘要： A magnetic resonance imaging method is proposed wherein a magnetic resonance image is reconstructed from magnetic resonance signals from respective signal channels. More specifically, individual signal channels relate to respective surface coils which are employed as receiver antennas for the magnetic resonance signals. The magnetic resonance signals are acquired with sub-sampling of the k-space. Resampling on a regular square grid is performed, thus enabling fast Fourier transformation in the reconstruction of the magnetic resonance image. Furthermore, the reconstruction is carried out on the basis of the spatial sensitivity profile of the receiver antennas, i.e. of the surface coils, so as to separate contributions from different spatial positions in the sub-sampled magnetic resonance signals. Preferably, a spiral-shaped acquisition trajectory is followed in the k-space.

公开(公告)号：US20140043025A1

公开(公告)日：2014-02-13

申请号：US14112183

申请日：2012-04-12

申请人： Jinnan Wang ,  Peter Börnert ,  Chun Yuan

发明人： Jinnan Wang ,  Peter Börnert ,  Chun Yuan

IPC分类号： G01R33/30

CPC分类号： G01R33/30 ,  G01R33/56316 ,  G01R33/5635

摘要： A black blood magnetic resonance imaging sequence is performed using a magnetic resonance scanner. The sequence includes: applying a first flow sensitization gradient; applying a spoiler gradient after applying the first flow sensitization gradient; applying a second flow sensitization gradient after applying the spoiler gradient wherein the second flow sensitization gradient has area equal to the first flow sensitization gradient but of opposite polarity; applying a slice-selective radio frequency excitation pulse after applying the spoiler gradient; and performing a magnetic resonance readout after applying the second flow sensitization gradient and after applying the slice selective radio frequency excitation. The readout acquires magnetic resonance imaging data having blood signal suppression in the region excited by the slice-selective radio frequency excitation pulse. The magnetic resonance imaging data is suitably reconstructed to generate a black blood image that may be displayed.

摘要翻译： 使用磁共振扫描仪进行黑血液磁共振成像序列。 该序列包括：应用第一流感敏化梯度; 在应用第一流感敏化梯度后应用扰流板梯度; 在施加扰流板梯度之后施加第二流动增感梯度，其中第二流动增感梯度具有等于第一流动增感梯度但具有相反极性的面积; 应用扰流板梯度后应用切片选择射频激励脉冲; 以及在施加第二流动增感梯度之后并且在施加切片选择性射频激发之后执行磁共振读出。 读出器获取在由片选择射频激励脉冲激发的区域中具有血液信号抑制的磁共振成像数据。 适当地重建磁共振成像数据以产生可以显示的黑血图像。

公开(公告)号：US20140035581A1

公开(公告)日：2014-02-06

申请号：US14112135

申请日：2012-04-12

申请人： Jinnan Wang ,  Huijun Chen ,  Peter Börnert ,  Chun Yuan

发明人： Jinnan Wang ,  Huijun Chen ,  Peter Börnert ,  Chun Yuan

IPC分类号： G01R33/48

CPC分类号： G01R33/48 ,  G01R33/56316 ,  G01R33/5635

摘要： Interleaved black/bright imaging (IBBI) is performed using a magnetic resonance (MR) scanner (10) wherein the black blood module (52) of the IBBI includes: applying a first flow sensitization gradient; applying a spoiler gradient after applying the first flow sensitization gradient; applying a second flow sensitization gradient after applying the spoiler gradient wherein the second flow sensitization gradient has area equal to the first flow sensitation gradient but of opposite polarity; applying a slice selective radio frequency excitation pulse after applying the spoiler gradient; and performing a MR readout after applying the second flow sensitization gradient and after applying the slice selective radio frequency excitation wherein the readout acquires MR imaging data having blood signal suppression in the region excited by the slice selective radio frequency excitation pulse. The MR imaging data having blood signal suppression is reconstructed to generate black blood images (20), and MR imaging data generated by bright blood modules (50) of the IBBI is reconstructed to generate bright blood images (22).

摘要翻译： 使用磁共振（MR）扫描器（10）进行交错黑/亮成像（IBBI），其中IBBI的黑血模块（52）包括：施加第一流感敏化梯度; 在应用第一流感敏化梯度后应用扰流板梯度; 在施加扰流板梯度之后施加第二流动增感梯度，其中第二流动增感梯度具有等于第一流动感觉梯度但具有相反极性的面积; 应用扰流板梯度后应用切片选择性射频激励脉冲; 以及在应用所述第二流敏增强梯度之后并且在施加所述切片选择性射频激发之后执行MR读出，其中所述读出器获取在由所述切片选择性射频激励脉冲激发的区域中具有血液信号抑制的MR成像数据。 重建具有血液信号抑制的MR成像数据以产生黑血图像（20），并重建由IBBI的亮血模块（50）产生的MR成像数据，以产生亮血图像（22）。

公开(公告)号：US06573719B2

公开(公告)日：2003-06-03

申请号：US09728111

申请日：2000-12-01

申请人： Kay Nehrke ,  Peter Börnert

发明人： Kay Nehrke ,  Peter Börnert

IPC分类号： G01V300

CPC分类号： G01R33/5676

摘要： The invention relates to an MR method in which a navigator pulse is generated to excite a nuclear magnetization in a spatially limited volume by at least one RF pulse and at least two gradient magnetic fields having gradients which extend differently in respect of time and space. After the navigator pulse excitation, at least one MR signal is received from the volume in conjunction with a further gradient magnetic field for evaluation. In order to enhance the navigator pulse, a variation in time is imposed on the gradient magnetic fields in order to generate at least two MR signals which correspond to an excitation in the k space along mutually offset trajectories. The MR signals are combined.

摘要翻译： 本发明涉及一种MR方法，其中产生导航脉冲以通过至少一个RF脉冲激励空间有限体积中的核磁化，并且至少两个梯度磁场具有相对于时间和空间不同地延伸的梯度。 在导航器脉冲激励之后，至少一个MR信号与另外一个用于评估的梯度磁场一起从该体积中接收。 为了增强导航脉冲，对梯度磁场施加时间变化，以便产生对应于相互偏移轨迹的k空间中的激励的至少两个MR信号。 MR信号被组合。