公开(公告)号：US20160140293A1

公开(公告)日：2016-05-19

申请号：US14936785

申请日：2015-11-10

申请人： David Grodzki ,  Björn Heismann

发明人： David Grodzki ,  Björn Heismann

IPC分类号： G06F19/00

CPC分类号： G16H30/20 ,  G06F19/00 ,  G06F19/321

摘要： A method and a device for protocol adjustment for medical imaging, and a medical imaging device and a computer program product for carrying out the method, wherein the method includes providing a location-specific feature of an imaging device, ascertaining at least one location-dependent protocol boundary condition from a comparison with at least one database, and creating at least one protocol adjusted to the at least one location-dependent protocol boundary condition. At least one of the providing, ascertaining, or creating occurs automatically.

摘要翻译： 用于医学成像的协议调整的方法和装置，以及用于执行该方法的医学成像装置和计算机程序产品，其中所述方法包括提供成像装置的位置特定特征，确定至少一个位置相关 协议边界条件，以及创建至少一个调整到所述至少一个位置相关协议边界条件的协议。 提供，确定或创建中至少有一个自动发生。

公开(公告)号：US09223000B2

公开(公告)日：2015-12-29

申请号：US13627034

申请日：2012-09-26

申请人： David Grodzki

发明人： David Grodzki

IPC分类号： G01R33/54 ,  G01R33/48 ,  G01R33/56

CPC分类号： G01R33/54 ,  G01R33/4816 ,  G01R33/5602

摘要： In a method to control a magnetic resonance system to generate magnetic resonance exposures of an examination subject, a first magnetic resonance radio-frequency pulse with a pulse length of at most 50 μs is initially emitted in a volume region of the examination subject. At least one second magnetic resonance radio-frequency pulse, whose phase is essentially rotated by 180° relative to the first magnetic resonance radio-frequency pulse, with a pulse length of at most 50 μs, is emitted in the same volume region of the examination subject in a predetermined time interval immediately after the first magnetic resonance radio-frequency pulse. An acquisition of raw data from the volume region of the examination subject then takes place. Furthermore, a control device for operating a magnetic resonance system as well as a magnetic resonance system with such a control device to implement such a method, are described.

摘要翻译： 在控制磁共振系统以产生检查对象的磁共振曝光的方法中，最初在检查对象的体积区域中发射脉冲长度至多为50μs的第一磁共振射频脉冲。 相对于第一磁共振射频脉冲，其相位基本上以相对于第一磁共振射频脉冲旋转180度的脉冲长度至多为50μs的至少一个第二磁共振射频脉冲在检查的相同体积区域中被发射 在紧接在第一磁共振射频脉冲之后的预定时间间隔中进行。 然后从考试科目的卷区域获取原始数据。 此外，描述了用于操作磁共振系统的控制装置以及具有这种控制装置的磁共振系统来实现这种方法。

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：US20140117986A1

公开(公告)日：2014-05-01

申请号：US14068236

申请日：2013-10-31

申请人： David Grodzki

发明人： David Grodzki

IPC分类号： G01R33/54 ,  G01R33/36

CPC分类号： G01R33/4816 ,  G01R33/5616

摘要： In a method, a magnetic resonance apparatus and non-transitory, a computer-readable storage medium, two raw data sets are created using at least one double-echo acquisition of an imaging area located in a measurement volume of the magnetic resonance apparatus. In the acquisition and storage of two echo signals in the form of raw data sets at different times, a second echo signal is not acquired after each and every radiated RF excitation pulses.

摘要翻译： 在一种方法中，使用位于磁共振设备的测量体积中的成像区域的至少一个双回波采集来创建磁共振设备和非暂时性的计算机可读存储介质两个原始数据集。 在不同时间以原始数据集的形式获取和存储两个回波信号，在每个辐射的RF激励脉冲之后不获取第二个回波信号。

公开(公告)号：US20140103928A1

公开(公告)日：2014-04-17

申请号：US14050613

申请日：2013-10-10

申请人： David Grodzki

发明人： David Grodzki

IPC分类号： G01R33/48

CPC分类号： G01R33/4828 ,  A61B5/055 ,  G01R33/4816 ,  G01R33/4824 ,  G01R33/5602

摘要： In a method and magnetic resonance apparatus for acquiring image data using a sequence in which k-space corresponding to the imaging area is scanned in a first region of k-space, which does not include the center of k-space, radially along spokes emanating from the center of k-space, with at least two phase coding gradients being completely ramped up before the excitation pulse, and in a second central region of k-space, which remains without the first region, in a Cartesian manner. For contrast increase, a pre-pulse is provided before a predetermined number of individual measurements. A portion of the measurement points of the second region of k-space, which portion is situated nearest the center of k-space, is scanned as central measurement points after the first administration of the pre-pulse immediately following a zero crossing of the contrast-relevant magnetization of one of at least two materials in the image.

摘要翻译： 在一种方法和磁共振装置中，使用在不包括k空间的中心的k空间的第一区域中扫描与成像区域相对应的k空间的序列来获取图像数据，沿径向辐射辐射 从k空间的中心开始，至少两个相位编码梯度在激发脉冲之前完全斜坡，并且在以笛卡尔方式保持没有第一区域的k空间的第二中心区域中。 为了对比度增加，在预定数量的单独测量之前提供预脉冲。 在紧随着对比度零交叉之后的第一次施加预脉冲之后，将k部分位于最靠近k空间中心的k空间的第二区域的一部分测量点作为中心测量点被扫描 图像中的至少两种材料之一的相关磁化强度。

公开(公告)号：US20140091795A1

公开(公告)日：2014-04-03

申请号：US14039264

申请日：2013-09-27

申请人： David Grodzki

发明人： David Grodzki

IPC分类号： G01R33/28 ,  G01R33/54

CPC分类号： G01R33/288 ,  G01R33/543 ,  G01R33/5659

摘要： In a method and magnetic resonance apparatus for automatic calculation of a maximum pulse length of a non-selective excitation pulse for a magnetic resonance data acquisition pulse sequence in which gradients are switched during the radiation of at least one non-selective excitation pulse, a first parameter, which indicates the field of view (FOV) desired in the measurement for which the pulse length of the excitation pulse should be maximized, is loaded into a processor, and a second parameter, which indicates the maximum gradient strength (Gmax) which corresponds to the highest gradient strength applied in the entire measurement, is also loaded into the processor. The processor then calculates the maximum pulse length of the excitation pulse on the basis of the first and second parameter. By the maximization of the pulse length, the SAR exposure is reduced for the examination subject from whom the magnetic resonance data are acquired with the pulse sequence.

摘要翻译： 在用于自动计算用于在至少一个非选择性激励脉冲的辐射期间切换梯度的磁共振数据获取脉冲序列的非选择性激励脉冲的最大脉冲长度的方法和磁共振装置中， 参数，其表示在激励脉冲的脉冲长度应该被最大化的测量中期望的视场（FOV）被加载到处理器中，第二参数指示对应于最大梯度强度（Gmax）的第二参数 在整个测量中施加的最高梯度强度也被加载到处理器中。 然后处理器基于第一和第二参数计算激励脉冲的最大脉冲长度。 通过脉冲长度的最大化，对于用脉冲序列获取磁共振数据的检查对象，SAR暴露减少。

公开(公告)号：US20140077810A1

公开(公告)日：2014-03-20

申请号：US14031288

申请日：2013-09-19

申请人： David Grodzki

发明人： David Grodzki

IPC分类号： G01R33/56

CPC分类号： G01R33/56 ,  G01R33/561

摘要： In a magnetic resonance data acquisition of at least two measurement data sets of an examination subject, each of the at least two measurement data sets is acquired in at least three partial measurements. Each partial measurement covers a partial region of k-space corresponding to the examination subject to be examined, and the partial measurements are executed in series in an order such that two successive partial measurements are associated with different data sets of the at least two measurement data sets, and such that two successive partial measurements respectively do not measure the same partial region. A reduced movement sensitivity is achieved by the acquisition of the interleaved partial measurements associated with different measurement data sets. Unwanted refocusings (and therefore echo signals of residual magnetization) are also avoided by avoiding successive partial measurements that measure the same partial region.

摘要翻译： 在检查对象的至少两个测量数据集的磁共振数据采集中，至少三个部分测量中获取至少两个测量数据集中的每一个。 每个部分测量覆盖与要检查的检查对象相对应的k空间的部分区域，并且按照使得两个连续部分测量与至少两个测量数据的不同数据集相关联的顺序串行执行部分测量 并且使得两个连续的部分测量分别不测量相同的部分区域。 通过获取与不同测量数据集相关联的交错部分测量来实现降低的移动灵敏度。 通过避免测量相同部分区域的连续部分测量，也避免了不需要的重新聚焦（以及剩余磁化的回波信号）。

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。