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    Method and system for phase-sensitive magnetic resonance imaging
    3.
    发明授权
    Method and system for phase-sensitive magnetic resonance imaging 有权
    用于相敏磁共振成像的方法和系统

    公开(公告)号：US08710840B2

    公开(公告)日：2014-04-29

    申请号：US13216505

    申请日：2011-08-24

    申请人： Patrick Gross ,  Antje Kickhefel ,  Joerg Roland

    发明人： Patrick Gross ,  Antje Kickhefel ,  Joerg Roland

    IPC分类号： G01V3/00

    CPC分类号： G01R33/565 ,  G01R33/50 ,  G01R33/5611 ,  G01R33/5615 ,  G01R33/56536 ,  G01R33/56563

    摘要： In a method and system for phase-sensitive magnetic resonance imaging, a respective, complex image data set provided to a processor for each of at least two different echo times, the complex image data sets for the different echo times having been reconstructed from magnetic resonance data that acquired for the different echo times using an echo imaging sequence, at least one complex division image data set is determined in the processor by complex division of the complex image data sets for the two different echo times. The two different echo times define an echo time difference, so the resulting complex division image data set has phase components that are dependent on the echo time difference.

    摘要翻译： 在用于相敏磁共振成像的方法和系统中，为至少两个不同回波时间中的每一个提供给处理器的相应复杂图像数据组，用于不同回波时间的复数图像数据集已经从磁共振 使用回波成像序列为不同回波时间获取的数据，通过对于两个不同回波时间的复数图像数据集的复杂划分，在处理器中确定至少一个复分割图像数据集。 两个不同的回波时间定义了回波时间差，因此所得到的复数分割图像数据集具有取决于回波时间差的相位分量。

    MAGNETIC RESONANCE METHOD AND SYSTEM TO DETERMINE THE POSITION OF A SLICE RELATIVE TO A REGION MOVING RELATIVE TO THE SLICE
    4.
    发明申请
    MAGNETIC RESONANCE METHOD AND SYSTEM TO DETERMINE THE POSITION OF A SLICE RELATIVE TO A REGION MOVING RELATIVE TO THE SLICE 有权
    磁共振方法和系统来确定相对于一个区域移动相对于一个片段的位置的位置

    公开(公告)号：US20120092011A1

    公开(公告)日：2012-04-19

    申请号：US13273450

    申请日：2011-10-14

    申请人： Antje Kickhefel ,  Joerg Roland ,  Eva Rothgang

    发明人： Antje Kickhefel ,  Joerg Roland ,  Eva Rothgang

    IPC分类号： G01R33/48 ,  G01R33/34

    CPC分类号： G01R33/4804 ,  G01R33/56308 ,  G01R33/56341 ,  G01R33/56509

    摘要： In a magnetic resonance method and system to determine a position of a slice relative to a region moving relative to the slice within a predetermined volume segment of an examination subject located in the magnetic resonance system, a physical property within the slice is detected with spatial resolution at multiple points in time, such that a time curve of the physical property is detected for at least one voxel of the slice. The position of the slice relative to the region is determined with respect to defined points in time, depending on the time curve.

    摘要翻译： 在磁共振方法和系统中，确定切片相对于位于磁共振系统中的检查对象的预定体积段内相对于切片移动的区域的位置，利用空间分辨率检测切片内的物理特性 在多个时间点，使得对于切片的至少一个体素检测物理性质的时间曲线。 根据时间曲线，相对于定义的时间点确定切片相对于该区域的位置。

    METHOD TO DETERMINE A BACKGROUND PHASE IN PHASE IMAGE DATA SETS
    5.
    发明申请
    METHOD TO DETERMINE A BACKGROUND PHASE IN PHASE IMAGE DATA SETS 有权
    确定相图数据集中背景相的方法

    公开(公告)号：US20110176714A1

    公开(公告)日：2011-07-21

    申请号：US12970184

    申请日：2010-12-16

    申请人： Rares Salomir ,  Magalie Viallon ,  Joerg Roland ,  Patrick Gross

    发明人： Rares Salomir ,  Magalie Viallon ,  Joerg Roland ,  Patrick Gross

    IPC分类号： G06K9/00

    CPC分类号： G01R33/4804 ,  G01R33/56509

    摘要： In a method to determine a background phase in phase values of a phase image data set that is acquired from an examination subject, wherein the background phase is determined in a partial region of the phase image data set, the phase image data set of the examination subject is acquired, and a substantially closed, planar contour is established in the phase image data set around the partial region, the planar contour having a contour area with a width of at least one pixel of the phase image data set. The phase values in the partial region are determined with the assumption that the spatial curve of the background phase is a harmonic or quasi-harmonic function, the phase values of the pixels in the partial region being determined based on the phase values in the planar contour.

    摘要翻译： 在确定从检查对象获取的相位图像数据集的相位值的背景相位的方法中，其中在相位图像数据集的部分区域中确定背景相位，检查的相位图像数据集 获取对象，并且在围绕该部分区域设置的相位图像数据中建立基本封闭的平面轮廓，该平面轮廓具有具有相位图像数据集的至少一个像素的宽度的轮廓区域。 通过假设背景相位的空间曲线是谐波或准谐波函数来确定部分区域中的相位值，基于平面轮廓中的相位值来确定部分区域中的像素的相位值 。

    Method for obtaining magnetic resonance image data using a multi-echo MR sequence with improved signal-to-noise ratio of the phase information
    8.
    发明授权
    Method for obtaining magnetic resonance image data using a multi-echo MR sequence with improved signal-to-noise ratio of the phase information 有权
    使用具有改善的相位信息的信噪比的多回波MR序列来获得磁共振图像数据的方法

    公开(公告)号：US08792961B2

    公开(公告)日：2014-07-29

    申请号：US12901679

    申请日：2010-10-11

    申请人： Patric Gross ,  Joerg Roland

    发明人： Patric Gross ,  Joerg Roland

    IPC分类号： A61B5/05

    CPC分类号： G01R33/4804 ,  A61B5/015 ,  A61B5/055 ,  G01R33/565

    摘要： In a method and magnetic resonance (MR) system to create an MR magnitude image data set and a phase image data set of an examination subject, first echo signals in a first raw MR data set are detected after a first echo time TE1 and at least second echo signals in at least one second raw MR data set are detected after a second echo time TE2 that is longer than TE1, a magnitude image data set is generated on the basis of the first raw MR data set and the at least one second raw MR data set with averaging of the first and the at least one second raw MR data set, and the phase image data set is generated based on the phase information contained in the at least two raw MR data sets, with averaging of the respective phase information contained in the at least two raw MR data sets.

    摘要翻译： 在用于创建MR幅度图像数据集和检查对象的相位图像数据集的方法和磁共振（MR）系统中，在第一回波时间TE1之后检测第一原始MR数据集中的第一回波信号，并且至少 在比TE1长的第二回波时间TE2之后检测至少一个第二原始MR数据组中的第二回波信号，基于第一原始MR数据集和至少一个第二原始数据集生成幅度图像数据集 MR数据集合，其具有第一原始MR数据集和至少一个第二原始MR数据集的平均值，并且基于包含在至少两个原始MR数据集中的相位信息生成相位图像数据集，并且对相位信息进行平均 包含在至少两个原始MR数据集中。

    BO FIELD DRIFT CORRECTION IN A TEMPERATURE MAP GENERATED BY MAGNETIC RESONANCE TOMOGRAPHY
    9.
    发明申请
    BO FIELD DRIFT CORRECTION IN A TEMPERATURE MAP GENERATED BY MAGNETIC RESONANCE TOMOGRAPHY 有权
    通过磁共振成像生成的温度图中的BO场干扰校正

    公开(公告)号：US20090096450A1

    公开(公告)日：2009-04-16

    申请号：US12249034

    申请日：2008-10-10

    申请人： Joerg Roland

    发明人： Joerg Roland

    IPC分类号： G01R33/38

    CPC分类号： A61B5/055 ,  A61B5/015 ,  G01R33/4804 ,  G01R33/4814 ,  G01R33/56563 ,  G01R33/58

    摘要： In a method to correct a B0 field drift in a temperature map exposure obtained by magnetic resonance tomography as well as a device to implement such a method, a magnetic resonance phantom is placed at a stored, marked reference position relative to an acquisition coil. A first reference phase image of the phantom is automatically acquired in the acquisition of a first phase image of an examination subject in the unheated state. A second reference phase image of the phantom is automatically acquired in the acquisition of a later second phase image of the examination subject. The phase images are adapted to one another according to the requirements of a calibration of the associated reference phase images.

    摘要翻译： 在通过磁共振断层摄影获得的温度图曝光中校正B0场漂移的方法以及实现这种方法的装置中，将磁共振体模相对于采集线圈置于存储的标记的基准位置。 在采集未加热状态的检查对象的第一相位图像时，自动获取体模的第一参考相位图像。 在获取检查对象的稍后的第二相位图像时，自动获取体模的第二参考相位图像。 根据相关参考相位图像的校准的要求，相位图像彼此适配。

    METHOD FOR DETERMINING THE EFFECT OF A MEDICAL DEVICE ON THE IMAGE DATA OF A MAGNETIC RESONANCE EXAMINATION AND/OR EXAMINATION SUBJECT EXAMINED BY MEANS OF MAGNETIC RESONANCE
    10.
    发明申请
    METHOD FOR DETERMINING THE EFFECT OF A MEDICAL DEVICE ON THE IMAGE DATA OF A MAGNETIC RESONANCE EXAMINATION AND/OR EXAMINATION SUBJECT EXAMINED BY MEANS OF MAGNETIC RESONANCE 审中-公开
    用于确定医疗装置对磁共振检查和/或检查对象的图像数据的影响的方法

    公开(公告)号：US20140191754A1

    公开(公告)日：2014-07-10

    申请号：US14151005

    申请日：2014-01-09

    申请人： Martin Ringholz ,  Joerg Roland ,  Eva Rothgang

    发明人： Martin Ringholz ,  Joerg Roland ,  Eva Rothgang

    IPC分类号： G01R33/20 ,  G01R33/28 ,  G01R33/44

    CPC分类号： G01R33/20 ,  A61B5/055 ,  G01R33/28 ,  G01R33/44 ,  G01R33/48 ,  G01R33/4804

    摘要： In a method and magnetic resonance apparatus for determining at least one datum providing a measure for the effect of at least one medical device that is to be connected to, or is connected to, an examination subject in the scope of a magnetic resonance examination that is to be executed, or has been executed, on the image data that are to be obtained, or have been obtained, in the scope of a magnetic resonance examination that is to be executed, or has been executed, and/or on the examination subject that is to be examined, or has been examined, in the scope of the magnetic resonance examination that is to be executed, or has been executed, the at least one datum is determined by at least one magnetic resonance thermometric measurement.

    摘要翻译： 在用于确定至少一个数据的方法和磁共振装置中，所述至少一个数据提供用于在磁共振检查的范围内连接到或连接到检查对象的至少一个医疗装置的效果的度量 要执行或已被执行在要执行或已被执行的磁共振检查的范围内要被获取或已经获得的图像数据，和/或在检查对象上 要在被执行或已执行的磁共振检查的范围内被检查或被检查，至少一个数据由至少一个磁共振测温测量确定。