公开(公告)号：US20130101198A1

公开(公告)日：2013-04-25

申请号：US13656932

申请日：2012-10-22

申请人： David Grodzki ,  Bjoern Heismann

发明人： David Grodzki ,  Bjoern Heismann

IPC分类号： G06K9/00

CPC分类号： A61K48/00 ,  A61B5/055 ,  A61B5/7203 ,  G01R33/48 ,  G01R33/4816 ,  G01R33/565 ,  G06F17/16

摘要： In a method and apparatus for the correction of artifacts in magnetic resonance images (MR) acquired with an MR pulse sequence in which gradients are switched simultaneously during the radiation of at least one non-selective excitation pulse, measurement data acquired with the pulse sequence in k-space are loaded into a processor, in which a perturbation matrix is determined on the basis of spatial and k-space point data of the acquired measurement data and the gradients used during the excitation. A corrected image is calculated from the acquired measurement data in k-space and the perturbation matrix, with the calculation of the corrected image including a matrix inversion of the perturbation matrix. The corrected image is then stored or displayed.

摘要翻译： 在用于在至少一个非选择性激励脉冲的辐射期间同时切换梯度的MR脉冲序列获取的磁共振图像（MR）中的伪影的校正方法和装置中，以脉冲序列获取的测量数据 k空间被加载到处理器中，其中基于所获取的测量数据的空间和k空间点数据以及在激励期间使用的梯度来确定扰动矩阵。 根据所获取的k空间测量数据和扰动矩阵计算校正图像，校正图像的计算包括扰动矩阵的矩阵求逆。 然后存储或显示校正后的图像。

公开(公告)号：US20120153953A1

公开(公告)日：2012-06-21

申请号：US13326672

申请日：2011-12-15

申请人： David Grodzki ,  Bjoern Heismann ,  Sebastian Schmidt

发明人： David Grodzki ,  Bjoern Heismann ,  Sebastian Schmidt

IPC分类号： G01R33/44

CPC分类号： G01R33/3806 ,  G01R33/34007 ,  G01R33/381 ,  G01R33/385

摘要： A magnetic resonance apparatus for examination in THE teeth and/or jaw region of a patient has at least one basic magnet to generate a constant basic magnetic field. The basic magnet is formed at least in part from at least one magnetic coil pair with at least two magnetic coils, and the at least one magnetic coil pair generates the basic magnetic field with a homogeneous magnetic field region between the at least two magnetic coils thereof.

摘要翻译： 用于在患者的牙齿和/或颌部区域进行检查的磁共振装置具有至少一个基本磁体以产生恒定的基本磁场。 基本磁体至少部分地由至少一个具有至少两个磁性线圈的电磁线圈对形成，并且所述至少一个磁线圈对在其至少两个磁性线圈之间产生具有均匀磁场区域的基本磁场 。

公开(公告)号：US09829553B2

公开(公告)日：2017-11-28

申请号：US13857311

申请日：2013-04-05

申请人： David Grodzki ,  Bjoern Heismann ,  Jeanette Lenger ,  Sebastian Schmidt

发明人： David Grodzki ,  Bjoern Heismann ,  Jeanette Lenger ,  Sebastian Schmidt

IPC分类号： G01R33/54 ,  G01R33/48 ,  G01R33/561

CPC分类号： G01R33/4806 ,  G01R33/4816 ,  G01R33/54 ,  G01R33/5619

摘要： In a method and a magnetic resonance (MR) system for functional MR imaging of a predetermined volume segment of THE brain of a living examination subject, an RF excitation pulse is radiated into the subject and at least one magnetic field gradient is activated, and MR data of the predetermined volume segment is acquired beginning at a predetermined echo time after the RF excitation pulse. The echo time is in a time period of 10 μs to 1000 μs.

公开(公告)号：US20130267827A1

公开(公告)日：2013-10-10

申请号：US13857322

申请日：2013-04-05

申请人： David Grodzki ,  Bjoern Heismann ,  Jeanette Lenger ,  Sebastian Schmidt

发明人： David Grodzki ,  Bjoern Heismann ,  Jeanette Lenger ,  Sebastian Schmidt

IPC分类号： A61B5/04 ,  A61B5/0476 ,  A61B5/00

CPC分类号： A61B5/04012 ,  A61B5/0042 ,  A61B5/0476 ,  A61B5/048 ,  A61B5/055 ,  A61B5/7264

摘要： In a method and a magnetic resonance (MR) system for functional MR imaging of a predetermined volume segment of the brain of a living examination subject, MR data of the predetermined volume segment are acquired, EEG data of the examination subject are acquired with the acquisition of the EEG data taking place simultaneously with the acquisition of the MR data, and the MR data automatically evaluated dependent on the acquired EEG data.

摘要翻译： 在用于生活检查对象的脑的预定体积段的功能MR成像的方法和磁共振（MR）系统中，获取预定体积段的MR数据，通过采集获取检查对象的EEG数据 的EEG数据与采集MR数据同时发生，MR数据根据所获得的EEG数据自动评估。

公开(公告)号：US09101659B2

公开(公告)日：2015-08-11

申请号：US13656932

申请日：2012-10-22

申请人： David Grodzki ,  Bjoern Heismann

发明人： David Grodzki ,  Bjoern Heismann

IPC分类号： G06K9/00 ,  A61K48/00 ,  G01R33/48 ,  G01R33/565 ,  G06F17/16

CPC分类号： A61K48/00 ,  A61B5/055 ,  A61B5/7203 ,  G01R33/48 ,  G01R33/4816 ,  G01R33/565 ,  G06F17/16

摘要： In a method and apparatus for the correction of artifacts in magnetic resonance images (MR) acquired with an MR pulse sequence in which gradients are switched simultaneously during the radiation of at least one non-selective excitation pulse, measurement data acquired with the pulse sequence in k-space are loaded into a processor, in which a perturbation matrix is determined on the basis of spatial and k-space point data of the acquired measurement data and the gradients used during the excitation. A corrected image is calculated from the acquired measurement data in k-space and the perturbation matrix, with the calculation of the corrected image including a matrix inversion of the perturbation matrix. The corrected image is then stored or displayed.

摘要翻译： 在用于在至少一个非选择性激励脉冲的辐射期间同时切换梯度的MR脉冲序列获取的磁共振图像（MR）中的伪影的校正方法和装置中，以脉冲序列获取的测量数据 k空间被加载到处理器中，其中基于所获取的测量数据的空间和k空间点数据以及在激励期间使用的梯度来确定扰动矩阵。 根据所获取的k空间测量数据和扰动矩阵计算校正图像，校正图像的计算包括扰动矩阵的矩阵求逆。 然后存储或显示校正后的图像。

公开(公告)号：US08878533B2

公开(公告)日：2014-11-04

申请号：US13245191

申请日：2011-09-26

申请人： David Grodzki ,  Bjoern Heismann

发明人： David Grodzki ,  Bjoern Heismann

IPC分类号： G01R33/48 ,  G01R33/34 ,  A61B5/055

CPC分类号： G01R33/4824 ,  A61B5/055

摘要： In a magnetic resonance system and method the imaging area is readout by: (a) switching at least two phase coding gradients in respective spatial directions, (b) at the full strength of the phase coding gradients, radiating a non-slice-selective RF excitation pulse, (c) after a time t1 after the last radiated excitation pulse, acquiring echo signals entered as raw data points along the radial k-space trajectory predetermined by the strength of the phase coding gradients, (d) repeating (a) through (c) with different phase coding gradients until k-space corresponding to the imaging area is read out in a first region along radial k-space trajectories, depending on the time t1, and (e) reading out a remainder of k-space that corresponds to the imaging area, that is not covered by the first region of k-space and includes the k-space center, in a different manner than by (a) through (d).

摘要翻译： 在磁共振系统和方法中，成像区域通过以下方式读出：（a）在各个空间方向上切换至少两个相位编码梯度，（b）在相位编码梯度的全强度下，辐射非切片选择性RF 励磁脉冲，（c）在最后辐射激励脉冲之后的时间t1之后，获取沿着相位编码梯度的强度预定的径向k空间轨迹作为原始数据点输入的回波信号，（d）重复（a）到 （c）具有不同的相位编码梯度，直到根据时间t1在沿着径向k空间轨迹的第一区域中读出对应于成像区域的k空间，以及（e）读出剩余的k空间， 对应于与（a）至（d）不同的方式，不是由k空间的第一区域覆盖并且包括k空间中心的成像区域。

公开(公告)号：US20140232396A1

公开(公告)日：2014-08-21

申请号：US14182512

申请日：2014-02-18

申请人： David Grodzki ,  Bjoern Heismann

发明人： David Grodzki ,  Bjoern Heismann

IPC分类号： G01R33/54

CPC分类号： G01R33/543 ,  G01R33/56509

摘要： In a method and a pulse sequence optimization device to determine a pulse sequence for a magnetic resonance system, a pulse sequence is selected for optimization that includes a number of radio-frequency pulses and a number of gradient pulses chronologically coordinated therewith. An automatic analysis of the pulse sequence takes place to identify fixed point/time periods in the pulse sequence that are to be left unmodified, and modifiable time intervals in the pulse sequence that may be optimized. An automatic optimization of gradient pulses in the modifiable time intervals takes place according to a predetermined optimization criterion, while keeping the length of modifiable time intervals constant.

摘要翻译： 在用于确定磁共振系统的脉冲序列的方法和脉冲序列优化装置中，选择脉冲序列用于优化，其包括多个射频脉冲和与其顺序协调的多个梯度脉冲。 进行脉冲序列的自动分析，以识别未修改的脉冲序列中的固定点/时间段，以及可优化的脉冲序列中的可修改时间间隔。 根据预定的优化标准，可修改时间间隔内的梯度脉冲的自动优化，同时保持可修改的时间间隔的长度恒定。

公开(公告)号：US20130265050A1

公开(公告)日：2013-10-10

申请号：US13857311

申请日：2013-04-05

申请人： David Grodzki ,  Bjoern Heismann ,  Jeanette Lenger ,  Sebastian Schmidt

发明人： David Grodzki ,  Bjoern Heismann ,  Jeanette Lenger ,  Sebastian Schmidt

IPC分类号： G01R33/48 ,  G01R33/54

CPC分类号： G01R33/4806 ,  G01R33/4816 ,  G01R33/54 ,  G01R33/5619

摘要： In a method and a magnetic resonance (MR) system for functional MR imaging of a predetermined volume segment of THE brain of a living examination subject, an RF excitation pulse is radiated into the subject and at least one magnetic field gradient is activated, and MR data of the predetermined volume segment is acquired beginning at a predetermined echo time after the RF excitation pulse. The echo time is in a time period of 10 μs to 1000 μs.

摘要翻译： 在用于生物检查对象的脑的预定体积段的功能MR成像的方法和磁共振（MR）系统中，RF激发脉冲被辐射到对象中，并且激活至少一个磁场梯度，并且MR 在RF激励脉冲之后的预定回波时间开始获取预定音量段的数据。 回声时间在10到1000之间。

公开(公告)号：US09632160B2

公开(公告)日：2017-04-25

申请号：US14182538

申请日：2014-02-18

申请人： David Grodzki ,  Bjoern Heismann

发明人： David Grodzki ,  Bjoern Heismann

IPC分类号： G01R33/48 ,  G01R33/54

CPC分类号： G01R33/543 ,  G01R33/482 ,  G01R33/4824

摘要： In a method and a pulse sequence determination device to determine a pulse sequence for a magnetic resonance system, control protocol parameter values are initially acquired. A determination of k-space trajectory node points within k-space then takes place in a processor on the basis of the control protocol parameter values. The determination of the pulse sequence then takes place on the basis of the k-space trajectory node points. A method for operating a magnetic resonance system uses such a pulse sequence, and a magnetic resonance system embodies such a pulse sequence determination device.

公开(公告)号：US08947087B2

公开(公告)日：2015-02-03

申请号：US13326672

申请日：2011-12-15

申请人： David Grodzki ,  Bjoern Heismann ,  Sebastian Schmidt

发明人： David Grodzki ,  Bjoern Heismann ,  Sebastian Schmidt

IPC分类号： G01V3/00 ,  G01R33/38 ,  G01R33/34 ,  G01R33/381 ,  G01R33/385

CPC分类号： G01R33/3806 ,  G01R33/34007 ,  G01R33/381 ,  G01R33/385

摘要： A magnetic resonance apparatus for examination in THE teeth and/or jaw region of a patient has at least one basic magnet to generate a constant basic magnetic field. The basic magnet is formed at least in part from at least one magnetic coil pair with at least two magnetic coils, and the at least one magnetic coil pair generates the basic magnetic field with a homogeneous magnetic field region between the at least two magnetic coils thereof.

摘要翻译： 用于在患者的牙齿和/或颌部区域进行检查的磁共振装置具有至少一个基本磁体以产生恒定的基本磁场。 基本磁体至少部分地由至少一个具有至少两个磁性线圈的电磁线圈对形成，并且至少一个磁线圈对在其至少两个磁性线圈之间产生具有均匀磁场区域的基本磁场 。