利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

47 条记录 (耗时 0.019 秒)

    METHOD FOR CAPTURING MR IMAGE DATA AND CORRESPONDING COMBINED MR/ET FACILITY
    2.
    发明申请
    METHOD FOR CAPTURING MR IMAGE DATA AND CORRESPONDING COMBINED MR/ET FACILITY 审中-公开
    用于捕获MR图像数据和对应组合MR / ET设备的方法

    公开(公告)号：US20120268118A1

    公开(公告)日：2012-10-25

    申请号：US13445333

    申请日：2012-04-12

    申请人： Matthias Fenchel ,  Kirstin Jattke

    发明人： Matthias Fenchel ,  Kirstin Jattke

    IPC分类号： G01R33/56

    CPC分类号： A61B5/055 ,  A61B5/0035 ,  A61B6/03 ,  A61B6/4417 ,  A61B6/5247 ,  G01R33/481 ,  G01R33/5608

    摘要： MR image data relating to a volume section of an examination object is determined. Image data relating to this volume section is also captured by way of a true-to-original tomographic method. The MR image data is compared with the image data. Depending on the results of this comparison, either the MR image data is corrected such that the MR image data matches the image data as closely as possible, or parameters that are used during the capture of the MR image data are modified such that, when the MR image data of the predefined volume section is captured again using the modified parameters, the newly captured MR image data matches the image data as closely as possible.

    摘要翻译： 确定与检查对象的体积部分相关的MR图像数据。 与该体积部分相关的图像数据也通过真实到原始的断层摄影方法来捕获。 将MR图像数据与图像数据进行比较。 根据该比较的结果，校正MR图像数据，使得MR图像数据尽可能接近匹配图像数据，或者在拍摄MR图像数据期间使用的参数被修改，使得当 使用修改的参数再次捕获预定义卷部分的MR图像数据，新捕获的MR图像数据尽可能接近匹配图像数据。

    METHOD AND MAGNETIC RESONANCE SYSTEM FOR IMAGING A PARTIAL REGION OF AN EXAMINATION SUBJECT
    5.
    发明申请
    METHOD AND MAGNETIC RESONANCE SYSTEM FOR IMAGING A PARTIAL REGION OF AN EXAMINATION SUBJECT 有权
    用于成像检查对象的部分区域的方法和磁共振系统

    公开(公告)号：US20130057282A1

    公开(公告)日：2013-03-07

    申请号：US13606398

    申请日：2012-09-07

    申请人： Jan Ole Blumhagen ,  Matthias Fenchel ,  Ralf Ladebeck

    发明人： Jan Ole Blumhagen ,  Matthias Fenchel ,  Ralf Ladebeck

    IPC分类号： G01R33/565 ,  G01R33/341

    CPC分类号： G01R33/56563 ,  A61B5/055 ,  G01R33/481 ,  G01R33/56572

    摘要： In a method and magnetic resonance (MR) apparatus to image a partial region of an examination subject by means of a multislice measurement, which partial region includes at least two measurement slices, and is located at least in part at the edge of a field of view of the magnetic resonance apparatus, for each voxel to be optimized that is located at the edge of the field of view, a gradient field is configured for each measurement slice of the partial region that is to be measured and is used to acquire magnetic resonance data in the multislice measurement. The gradient field is configured so as to cause a nonlinearity of the gradient field and a B0 field inhomogeneity to cancel at each of the aforementioned voxel to be optimized at the partial region at the edge of the field of view. An image of the partial region of the examination subject is determined from the magnetic resonance data acquired in this manner.

    摘要翻译： 在一种方法和磁共振（MR）装置中，通过多层测量对检查对象的部分区域进行成像，该部分区域包括至少两个测量切片，并且至少部分地位于 对于磁共振设备的视图，对于要被优化的位于视场边缘的每个体素，配置用于待测量的部分区域的每个测量片并用于获取磁共振的梯度场 多层测量中的数据。 梯度场被配置为使得梯度场的非线性和B0场不均匀性在每个上述体素处被消除以在视场的边缘处的部分区域被优化。 从以这种方式获取的磁共振数据确定检查对象的部分区域的图像。

    Method for controlling the acquisition and/or evaluation operation of image data in medical examinations
    6.
    发明授权
    Method for controlling the acquisition and/or evaluation operation of image data in medical examinations 有权
    用于控制医学检查中图像数据的获取和/或评估操作的方法

    公开(公告)号：US07899227B2

    公开(公告)日：2011-03-01

    申请号：US11736674

    申请日：2007-04-18

    申请人： Matthias Fenchel ,  Andreas Schilling ,  Stefan Thesen

    发明人： Matthias Fenchel ,  Andreas Schilling ,  Stefan Thesen

    IPC分类号： G06K9/00

    CPC分类号： G06K9/00 ,  G06F19/00 ,  G06F19/321 ,  G06K9/20 ,  G06K2209/051

    摘要： In a method for controlling the acquisition and/or evaluation operation of image data in medical examinations, using a statistical model of the target volume based on data about real anatomy, spatial information (in particular position, orientation and shape) of the target volume are automatically determined in a previously-acquired planning image data set wholly or partially showing a target volume, and the acquisition and/or evaluation operation is controlled using the spatial information.

    摘要翻译： 在用于控制医学检查中的图像数据的获取和/或评估操作的方法中，使用基于关于真实解剖结构的数据的目标体积的统计模型，目标体积的空间信息（特别是位置，取向和形状）是 在先前获得的完全或部分地示出目标体积的计划图像数据集中自动确定，并且使用空间信息来控制获取和/或评估操作。

    Method for calculating a value of an absorption parameter in positron emission tomography
    7.
    发明授权
    Method for calculating a value of an absorption parameter in positron emission tomography 有权
    用于计算正电子发射断层扫描中吸收参数值的方法

    公开(公告)号：US09220473B2

    公开(公告)日：2015-12-29

    申请号：US13747756

    申请日：2013-01-23

    申请人： Jan Ole Blumhagen ,  Matthias Fenchel ,  Ralf Ladebeck

    发明人： Jan Ole Blumhagen ,  Matthias Fenchel ,  Ralf Ladebeck

    IPC分类号： A61B5/05 ,  A61B6/00 ,  A61B5/00 ,  A61B6/03 ,  A61B5/055 ,  G01R33/48

    CPC分类号： A61B6/5247 ,  A61B5/0035 ,  A61B5/0037 ,  A61B5/055 ,  A61B5/0555 ,  A61B5/4872 ,  A61B5/4875 ,  A61B5/72 ,  A61B6/037 ,  A61B6/4417 ,  A61B6/463 ,  A61B6/466 ,  A61B6/5217 ,  G01R33/481

    摘要： A method is disclosed for calculating a spatially resolved value of an absorption parameter for a positron emission tomography (PET) scan of an examination object via magnetic resonance tomography (MRT). Magnetic resonance data is acquired within a first region lying within a field of view of a magnetic resonance system and within a second region bordering on the first and lying at the edge of the field of view. The method includes the spatially resolved calculation of a first value of the absorption parameter from the first MR data within the first region and of a second value from the second MR data within the second region. A three-dimensional parameter map is obtained from the first value. This parameter map is extended by the second value such that within the first region and the second region the parameter map has the value of the absorption parameter in spatially resolved form.

    摘要翻译： 公开了一种用于通过磁共振断层摄影（MRT）计算检查对象的正电子发射断层摄影（PET）扫描的吸收参数的空间分辨值的方法。 磁共振数据在位于磁共振系统的视野内的第一区域内并且在与第一区域接合并位于视野边缘的第二区域内获取。 该方法包括从第一区域内的第一MR数据和第二区域内的第二MR数据的第二值的空间分辨计算吸收参数的第一值。 从第一个值获得三维参数图。 该参数图被扩展第二值，使得在第一区域和第二区域内参数图具有空间分辨形式的吸收参数的值。

    MR SCAN SELECTION FOR PET ATTENUATION CORRECTION
    8.
    发明申请
    MR SCAN SELECTION FOR PET ATTENUATION CORRECTION 有权
    用于PET衰减校正的扫描选择

    公开(公告)号：US20140153806A1

    公开(公告)日：2014-06-05

    申请号：US14091372

    申请日：2013-11-27

    申请人： Christopher Glielmi ,  Christian Geppert ,  David Faul ,  Matthias Fenchel

    发明人： Christopher Glielmi ,  Christian Geppert ,  David Faul ,  Matthias Fenchel

    IPC分类号： G01R33/48 ,  A61B6/03 ,  A61B5/055 ,  G06T7/00 ,  G06T7/20

    CPC分类号： G01R33/481 ,  A61B5/0035 ,  A61B5/0037 ,  A61B5/055 ,  A61B6/037 ,  A61B6/4417 ,  A61B6/5247 ,  A61B6/5258 ,  A61B2576/00 ,  G06T5/008 ,  G06T5/50 ,  G06T2207/10088 ,  G06T2207/10104

    摘要： A method of attenuation correction for a positron emission tomography (PET) system includes obtaining PET scan data representative of a volume scanned by the PET system, obtaining a plurality of magnetic resonance (MR) scan data sets representative of the volume, each MR scan data set being acquired in a respective time period during acquisition of the PET scan data by the PET system, detecting motion of the volume that occurred during the acquisition of the PET scan data based on an assessment of the plurality of MR scan data sets, the PET scan data, or the plurality of MR scan data sets and the PET scan data, determining attenuation correction data from the plurality of MR scan data sets based on the detected motion for alignment of the attenuation correction data and the PET scan data, and correcting the PET scan data with the attenuation correction data.

    摘要翻译： 用于正电子发射断层摄影（PET）系统的衰减校正方法包括获得代表由PET系统扫描的体积的PET扫描数据，获得表示体积的多个磁共振（MR）扫描数据集，每个MR扫描数据 通过PET系统在PET扫描数据的采集期间在各自的时间段中进行采集，基于多个MR扫描数据集的评估来检测在PET扫描数据的采集期间发生的体积的运动，PET 扫描数据或多个MR扫描数据组和PET扫描数据，基于检测到的用于对准衰减校正数据和PET扫描数据的运动来确定来自多个MR扫描数据组的衰减校正数据，并校正 PET扫描数据与衰减校正数据。

    Method for determining radiation attenuation in a positron emission tomography scanner
    9.
    发明授权
    Method for determining radiation attenuation in a positron emission tomography scanner 失效
    用于确定正电子发射断层扫描仪中的辐射衰减的方法

    公开(公告)号：US08618490B2

    公开(公告)日：2013-12-31

    申请号：US13160616

    申请日：2011-06-15

    申请人： Matthias Fenchel ,  Ralf Ladebeck

    发明人： Matthias Fenchel ,  Ralf Ladebeck

    IPC分类号： G01T1/166 ,  A61B5/05

    CPC分类号： G01R33/481 ,  A61B6/037 ,  A61B6/4417 ,  A61B6/583 ,  G06T11/005

    摘要： A method is disclosed for determining radiation attenuation as a result of an object in a positron emission tomography scanner. In at least one embodiment, a phantom object is arranged in the positron emission tomography scanner during the method. First raw radiation data of the phantom object is acquired while the object is not arranged in the positron emission tomography scanner. A first image of the phantom object is calculated from the first raw radiation data. The object then is arranged in the positron emission tomography scanner (2) and preliminary radiation attenuation of the object is identified. Second raw radiation data of the phantom object is acquired while the object is arranged in the positron emission tomography scanner. A second image of the phantom object is calculated from the second raw radiation data taking into account the preliminary radiation attenuation. The radiation attenuation is determined on the basis of the first image and the second image.

    摘要翻译： 公开了一种用于确定作为正电子发射断层摄影扫描仪中的物体的结果的辐射衰减的方法。 在至少一个实施例中，在该方法期间，在正电子发射断层摄影扫描器中布置幻影物体。 当物体未排列在正电子发射断层摄影扫描器中时，获取幻影物体的第一原始辐射数据。 从第一个原始辐射数据计算幻影物体的第一个图像。 物体然后被布置在正电子发射断层扫描仪（2）中，并且识别对象的初步辐射衰减。 当物体布置在正电子发射断层扫描仪中时，获取体模对象的第二原始辐射数据。 考虑到初步辐射衰减，从第二原始辐射数据计算幻影物体的第二图像。 基于第一图像和第二图像确定辐射衰减。

    Method For Imaging A Portion Of An Examination Object In A Magnetic Resonance Scanner
    10.
    发明申请
    Method For Imaging A Portion Of An Examination Object In A Magnetic Resonance Scanner 有权
    在磁共振扫描仪中成像检查对象的一部分的方法

    公开(公告)号：US20120056621A1

    公开(公告)日：2012-03-08

    申请号：US13226022

    申请日：2011-09-06

    申请人： Jan Ole Blumhagen ,  Matthias Fenchel ,  Ralf Ladebeck

    发明人： Jan Ole Blumhagen ,  Matthias Fenchel ,  Ralf Ladebeck

    IPC分类号： G01R33/48

    CPC分类号： G01R33/56563 ,  G01R33/445 ,  G01R33/481 ,  G01R33/56572

    摘要： A method is disclosed for imaging a portion of an examination object in a magnetic resonance scanner. The portion is arranged at the edge of a field of view of the magnetic resonance scanner. During at least one embodiment of the method, a gradient field is produced such that a nonlinearity in the gradient field and a B0-field inhomogeneity cancel at a predetermined point at the edge of the field of view. Magnetic resonance data, which contains the predetermined point at the edge of the field of view, is acquired with the aid of the gradient field. An image of the portion of the examination object at the predetermined point is determined from the magnetic resonance data.

    摘要翻译： 公开了一种用于对磁共振扫描仪中的检查对象的一部分进行成像的方法。 该部分布置在磁共振扫描仪的视野的边缘。 在该方法的至少一个实施例中，产生梯度场，使得梯度场中的非线性和B0场不均匀性在视场边缘处的预定点处消除。 借助于梯度场获取包含视场边缘处的预定点的磁共振数据。 根据磁共振数据确定检查对象在预定点处的部分的图像。