公开(公告)号：US20130049752A1

公开(公告)日：2013-02-28

申请号：US13592675

申请日：2012-08-23

申请人： Jana Hutter ,  Peter Schmitt

发明人： Jana Hutter ,  Peter Schmitt

IPC分类号： G01R33/54

CPC分类号： G01R33/5611 ,  G01R33/5635

摘要： In a method to generate magnetic resonance (MR) images of an examination subject, MR signals are detected simultaneously with multiple coils, each coil having its own coil characteristic. In the detection of the MR signals, raw data space is incompletely filled with MR signals; with raw data space being undersampled in a central raw data region with a coherent acquisition pattern that is composed of a spatially repeating set of raw data points; and raw data space outside of the central raw data region is sampled with an incoherent acquisition pattern. The MR image is reconstructed from the detected MR signals, step-by-step in an iterative reconstruction procedure using a reconstruction matrix A, starting from an initial estimate; wherein the reconstruction matrix has continuing information about the coil characteristics with which the MR signals were detected.

摘要翻译： 在产生检查对象的磁共振（MR）图像的方法中，与多个线圈同时检测MR信号，每个线圈具有其自己的线圈特性。 在MR信号的检测中，原始数据空间不完全充满MR信号; 原始数据空间在具有由空间上重复的原始数据点组合的相干采集模式的中央原始数据区域中欠采样; 并且以非相干采集模式对中心原始数据区域外的原始数据空间进行采样。 从初始估计开始，使用重构矩阵A，从迭代重建过程中逐步地从检测到的MR信号中重建MR图像; 其中重建矩阵具有关于检测到MR信号的线圈特性的持续信息。

公开(公告)号：US20140285194A1

公开(公告)日：2014-09-25

申请号：US14221645

申请日：2014-03-21

申请人： Jana Hutter ,  Peter Schmitt

发明人： Jana Hutter ,  Peter Schmitt

IPC分类号： G01R33/56

CPC分类号： G01R33/56 ,  G01R33/5608 ,  G01R33/5611 ,  G01R33/56316

摘要： In a method and apparatus for time-resolved phase-contrast magnetic resonance (MR) imaging with speed encoding, MR signals are detected with multiple receivers in each of numerous time segments in order to acquire raw data in each of the time segments, in each case for numerous MR images with different speed encodings. Stationary image points and/or non-stationary image points are identified, dependent on the detected MR signals. A mask is defined, dependent on the identified stationary image points and/or the non-stationary image points, wherein the mask is locally variable. The numerous MR images for the numerous time segments are reconstructed from the acquired raw data, wherein the reconstruction occurs in an iterative process and with a temporal regularization, which is dependent on the mask.

摘要翻译： 在用于通过速度编码进行时分解相位对比磁共振（MR）成像的方法和装置中，在多个时间段中的每一个中用多个接收器检测MR信号，以便在每个时间段中获取每个时间段中的原始数据 用于具有不同速度编码的多个MR图像的情况。 取决于检测到的MR信号来识别固定图像点和/或非平稳图像点。 根据所识别的固定图像点和/或非平稳图像点来定义掩模，其中掩模是局部变量的。 从所获取的原始数据重建多个时间段的多个MR图像，其中重建发生在迭代过程中并且具有取决于掩码的时间正则化。

公开(公告)号：US09285448B2

公开(公告)日：2016-03-15

申请号：US13591643

申请日：2012-08-22

申请人： Jana Hutter ,  Peter Schmitt

发明人： Jana Hutter ,  Peter Schmitt

IPC分类号： G06K9/00 ,  G01R33/34 ,  G01R33/561 ,  G01R33/56 ,  G01R33/563

CPC分类号： G01R33/561 ,  G01R33/5608 ,  G01R33/5611 ,  G01R33/5635

摘要： A method is disclosed for calculating an MR image of a target layer from an examination object, wherein the MR image is calculated using iterative reconstruction. In at least one embodiment, the method includes: acquiring MR data from an initial layer of the examination object, determining information produced by the examination object from the acquired MR data of the initial layer, determining a penalty term from the information produced by the examination object, and performing the iterative reconstruction of the MR image for the target layer taking into account the determined penalty term.

摘要翻译： 公开了一种用于从检查对象计算目标层的MR图像的方法，其中使用迭代重建来计算MR图像。 在至少一个实施例中，该方法包括：从检查对象的初始层获取MR数据，从所获取的初始层的MR数据确定由检查对象产生的信息，根据检查产生的信息确定惩罚项 对象，并且考虑确定的惩罚项，对目标层执行MR图像的迭代重建。

公开(公告)号：US09035653B2

公开(公告)日：2015-05-19

申请号：US13592675

申请日：2012-08-23

申请人： Jana Hutter ,  Peter Schmitt

发明人： Jana Hutter ,  Peter Schmitt

IPC分类号： G01R33/54 ,  G01R33/561 ,  G01R33/563

CPC分类号： G01R33/5611 ,  G01R33/5635

摘要： In a method to generate magnetic resonance (MR) images of an examination subject, MR signals are detected simultaneously with multiple coils, each coil having its own coil characteristic. In the detection of the MR signals, raw data space is incompletely filled with MR signals; with raw data space being undersampled in a central raw data region with a coherent acquisition pattern that is composed of a spatially repeating set of raw data points; and raw data space outside of the central raw data region is sampled with an incoherent acquisition pattern. The MR image is reconstructed from the detected MR signals, step-by-step in an iterative reconstruction procedure using a reconstruction matrix A, starting from an initial estimate; wherein the reconstruction matrix has continuing information about the coil characteristics with which the MR signals were detected.

摘要翻译： 在产生检查对象的磁共振（MR）图像的方法中，与多个线圈同时检测MR信号，每个线圈具有其自己的线圈特性。 在MR信号的检测中，原始数据空间不完全充满MR信号; 原始数据空间在具有由空间上重复的原始数据点组合的相干采集模式的中央原始数据区域中欠采样; 并且以非相干采集模式对中心原始数据区域外的原始数据空间进行采样。 从初始估计开始，使用重构矩阵A，从迭代重建过程中逐步地从检测到的MR信号中重建MR图像; 其中重建矩阵具有关于检测到MR信号的线圈特性的持续信息。

公开(公告)号：US09804242B2

公开(公告)日：2017-10-31

申请号：US14221645

申请日：2014-03-21

申请人： Jana Hutter ,  Peter Schmitt

发明人： Jana Hutter ,  Peter Schmitt

IPC分类号： G01R33/56 ,  G01R33/563 ,  G01R33/561

CPC分类号： G01R33/56 ,  G01R33/5608 ,  G01R33/5611 ,  G01R33/56316

摘要： In a method and apparatus for time-resolved phase-contrast magnetic resonance (MR) imaging with speed encoding, MR signals are detected with multiple receivers in each of numerous time segments in order to acquire raw data in each of the time segments, in each case for numerous MR images with different speed encodings. Stationary image points and/or non-stationary image points are identified, dependent on the detected MR signals. A mask is defined, dependent on the identified stationary image points and/or the non-stationary image points, wherein the mask is locally variable. The numerous MR images for the numerous time segments are reconstructed from the acquired raw data, wherein the reconstruction occurs in an iterative process and with a temporal regularization, which is dependent on the mask.

公开(公告)号：US10026119B2

公开(公告)日：2018-07-17

申请号：US13608834

申请日：2012-09-10

申请人： Travis Harrison Kroll Green ,  Narelle Cozens ,  Peter Schmitt ,  Michael DePasquale ,  Avery Pennarun ,  Boris Mizhen

发明人： Travis Harrison Kroll Green ,  Narelle Cozens ,  Peter Schmitt ,  Michael DePasquale ,  Avery Pennarun ,  Boris Mizhen

IPC分类号： G06Q40/00 ,  G06Q40/02

摘要： A transfer management system receives a request to transfer an amount of funds from a transferring account maintained by a transferring bank to a receiving account maintained by a receiving bank. The transfer management system determines whether the transferring bank maintains an intermediate transferring account, and whether the receiving bank maintains an intermediate receiving account. If the transferring bank maintains an intermediate transferring account and the receiving maintains an intermediate receiving account, the transfer management system transmits to a transferring bank system of the transferring bank an intra-bank transfer request. The intra-bank transfer request is to transfer the amount of funds from the transferring account to the intermediate transferring account. Additionally, the transfer management system transmits an intra-bank transfer request to a receiving bank system of the receiving bank to transfer the amount of funds from the intermediate receiving account maintained by the receiving bank to the receiving account.

公开(公告)号：US09500734B2

公开(公告)日：2016-11-22

申请号：US14036279

申请日：2013-09-25

申请人： Andreas Greiser ,  Peter Schmitt

发明人： Andreas Greiser ,  Peter Schmitt

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

CPC分类号： G01R33/5635 ,  G01R33/4826 ,  G01R33/56316

摘要： In a method and magnetic resonance (MR) system to generate an MR phase contrast angiography image of an examination subject, velocity-dependent phase information is impressed on moving spins in the examination subject by switching additional bipolar coding gradients that are in addition to the basic phase coding and readout gradients. For the creation of the MR phase contrast angiography images, the MR signals of the examination subject are read out in raw data space with a non-Cartesian acquisition pattern during a readout gradient. The additional bipolar coding gradients switched such that they proceed along a coordinate system that corresponds to the non-Cartesian acquisition pattern, and such that a coordinate axis of this coordinate system proceed along the readout gradient.

摘要翻译： 在用于产生检查对象的MR相位对比血管造影图像的方法和磁共振（MR）系统中，速度相关相位信息通过切换附加的基本的双极性编码梯度而印在检查对象的移动自旋上 相位编码和读出梯度。 为了创建MR相位对比血管造影图像，检查对象的MR信号在读数梯度期间以非笛卡尔采集模式在原始数据空间中被读出。 附加的双极编码梯度被切换，使得它们沿着对应于非笛卡尔采集模式的坐标系进行，并且使得该坐标系的坐标轴沿着读出梯度进行。

公开(公告)号：US09442961B2

公开(公告)日：2016-09-13

申请号：US13736201

申请日：2013-01-08

申请人： Peter Schmitt ,  Gerhard Laub ,  Yutaka Natsuaki ,  Randall Kroeker

发明人： Peter Schmitt ,  Gerhard Laub ,  Yutaka Natsuaki ,  Randall Kroeker

IPC分类号： G06F17/30 ,  G01R33/48 ,  G01R33/563 ,  G01R33/561

CPC分类号： G06F17/3028 ,  G01R33/48 ,  G01R33/4818 ,  G01R33/4824 ,  G01R33/5619 ,  G01R33/5635

摘要： A system orders acquisition of frequency domain components representing MR image data for storage in a storage array (e.g., k-space). A storage array of individual data elements stores corresponding individual frequency components comprising an MR dataset. The array of individual data elements has a designated center and individual data elements individually have a radius to the designated center. A magnetic field generator generates a magnetic field for use in acquiring multiple individual frequency components corresponding to individual data elements in the storage array. The individual frequency components are successively acquired in an order in which radius of respective corresponding individual data elements increases and decreases as the multiple individual frequency components are sequentially acquired during acquisition of an MR dataset representing an MR image. A storage processor stores individual frequency components acquired using the magnetic field in corresponding individual data elements in the array.

摘要翻译： 系统命令采集代表用于存储在存储阵列（例如，k空间）中的MR图像数据的频域分量。 各个数据元素的存储阵列存储包括MR数据集的相应单独的频率分量。 单个数据元素的阵列具有指定的中心，并且各个数据元素各自具有到指定中心的半径。 磁场发生器产生用于获取对应于存储阵列中的各个数据元素的多个单独频率分量的磁场。 在采集表示MR图像的MR数据集的顺序获取时，以相应的各个数据元素的半径逐渐增加和减小的顺序连续获取各个频率分量。 存储处理器将使用磁场获取的各个频率分量存储在阵列中的相应的单个数据元素中。

公开(公告)号：US20130278259A1

公开(公告)日：2013-10-24

申请号：US13866328

申请日：2013-04-19

申请人： Andreas Greiser ,  Peter Schmitt ,  Hui Xue

发明人： Andreas Greiser ,  Peter Schmitt ,  Hui Xue

IPC分类号： G01R33/50

CPC分类号： G01R33/50 ,  G01R33/56 ,  G01R33/56509

摘要： In a method for a rapid determination of spatially resolved magnetic resonance relaxation parameters in an area of examination, a preparation pulse is radiated into the area of examination. During the relaxation of the longitudinal magnetization, spatially encoded magnetic resonance signals are acquired at a minimum of two different points in time using a fast magnetic resonance sequence. At each inversion time, an image data record is reconstructed from the magnetic resonance signals, which are elastically registered to each other. From the recorded image data records, values of magnetic resonance relaxation parameters are spatially accurately determined.

摘要翻译： 在用于在检查区域中快速确定空间分辨的磁共振松弛参数的方法中，准备脉冲被辐射到检查区域中。 在松弛纵向磁化期间，使用快速磁共振序列在至少两个不同的时间点获取空间编码的磁共振信号。 在每个反转时间，从彼此弹性对准的磁共振信号重建图像数据记录。 从记录的图像数据记录中，磁共振松弛参数的值在空间上被精确地确定。

公开(公告)号：US08554301B2

公开(公告)日：2013-10-08

申请号：US13177730

申请日：2011-07-07

申请人： Peter Schmitt

发明人： Peter Schmitt

IPC分类号： A61B5/05 ,  G06K9/00

CPC分类号： G01R33/5635 ,  G01R33/4838 ,  G01R33/5602

摘要： A method to create magnetic resonance images of a predetermined imaging volume within an examination subject with a magnetic resonance system includes the following steps: Localize an inflow that supplies the imaging volume. Form a specific volume that at least partially includes the predetermined imaging volume and that is adapted to the inflow such that the specific volume has a recess into the specific volume at the inflow, via which recess at least a partial segment of the inflow is removed from the specific volume. Saturate or invert the magnetization of the specific volume by means of the magnetic resonance system. Detect measurement signals from the imaging volume. Create the MR images of the imaging volume by means of the measurement signals.

摘要翻译： 使用磁共振系统在检查对象内创建预定成像体积的磁共振图像的方法包括以下步骤：定位提供成像体积的流入。 形成至少部分地包括预定成像体积并且适于流入的比容积，使得比容积具有在流入处的比容积中的凹陷，通过该凹槽至少部分流入部分被从 具体体积。 通过磁共振系统饱和或反转比体积的磁化。 从成像体积检测测量信号。 通过测量信号创建成像体积的MR图像。