公开(公告)号：US20070053605A1

公开(公告)日：2007-03-08

申请号：US11506971

申请日：2006-08-17

申请人： Dieter Ritter ,  Christian Schmidgunst

发明人： Dieter Ritter ,  Christian Schmidgunst

IPC分类号： G06K9/40

CPC分类号： G01N23/046 ,  A61B6/032 ,  A61B6/4035 ,  A61B6/466 ,  A61B6/469 ,  G01N2223/419 ,  G01N2223/612 ,  G06T11/005 ,  G06T2211/412

摘要： In a method for generation of 3D x-ray image data of a subject, a number of initial 2D x-ray images of the subject are acquired from various viewing directions. A number of noise-filtered 2D x-ray images are produced by, for each noise-filtered 2D image, combining at least two of the initial 2D x-ray images with noise filtering. 3D x-ray image data are generated from the noise-filtered 2D x-ray images.

摘要翻译： 在用于产生被摄体的3D X射线图像数据的方法中，从各种观察方向获取被摄体的多个初始2D X射线图像。 对于每个噪声滤波的2D图像，通过将至少两个初始2D x射线图像与噪声滤波相结合来产生许多经噪声滤波的2D x射线图像。 从噪声滤波的二维X射线图像生成3D X射线图像数据。

公开(公告)号：US06628278B1

公开(公告)日：2003-09-30

申请号：US09577063

申请日：2000-05-22

申请人： Dieter Ritter

发明人： Dieter Ritter

IPC分类号： G06T1500

CPC分类号： G01C21/3638 ,  G06T15/10

摘要： In a method for obtaining a three-dimensional map representation for a navigation system from two-dimensional road map data, road segments to be represented are linked with the aid of three-dimensional topological data. The navigation system has a conversion unit for converting the two-dimensional road map data and the three-dimensional road topological data into a three-dimensional map representation.

摘要翻译： 在从二维路线图数据获得导航系统的三维地图表示的方法中，借助于三维拓扑数据链接待表示的路段。 导航系统具有用于将二维路线图数据和三维道路拓扑数据转换为三维地图表示的转换单元。

公开(公告)号：US06363169B1

公开(公告)日：2002-03-26

申请号：US09120468

申请日：1998-07-23

申请人： Dieter Ritter ,  Yukinori Matsumoto ,  Kazuhide Sugimoto ,  Tsutomu Arakawa

发明人： Dieter Ritter ,  Yukinori Matsumoto ,  Kazuhide Sugimoto ,  Tsutomu Arakawa

IPC分类号： G06K928

CPC分类号： G06T17/20 ,  G06T7/80 ,  G06T17/10

摘要： A reference sheet is employed on which reference points are arranged irregularly and asymmetrically. An object of interest is placed on the reference sheet. The object of interest is shot together with the reference points by a camera. A shooting position of the camera is calculated according to the Hough transform method on the basis of the position of a reference point in the obtained object image. A three-dimensional model is generated according to the obtained object image and shooting position. Therefore, a simple and economic three-dimensional modeling apparatus that does not require a turntable can be provided.

摘要翻译： 使用参考纸，其中参考点被布置不规则和不对称。 感兴趣的对象放在参考表上。 感兴趣的对象是通过相机与参考点一起拍摄的。 基于获取的对象图像中的参考点的位置，根据霍夫变换方法计算摄像机的拍摄位置。 根据获得的物体图像和拍摄位置生成三维模型。 因此，可以提供不需要转台的简单且经济的三维建模装置。

公开(公告)号：US20180313922A1

公开(公告)日：2018-11-01

申请号：US15965919

申请日：2018-04-28

申请人： Marc Beckmann ,  Petra Bildhauer ,  Carsten Großhauser ,  Hubertus Fischer ,  Uvo Hölscher ,  Ralf Kartäusch ,  Jürgen Nistler ,  Dominik Paul ,  Dieter Ritter ,  Volker Weißenberger

发明人： Marc Beckmann ,  Petra Bildhauer ,  Carsten Großhauser ,  Hubertus Fischer ,  Uvo Hölscher ,  Ralf Kartäusch ,  Jürgen Nistler ,  Dominik Paul ,  Dieter Ritter ,  Volker Weißenberger

IPC分类号： G01R33/44 ,  G01R33/56 ,  G01R33/34 ,  G01R33/36

CPC分类号： G01R33/443 ,  G01R33/246 ,  G01R33/34046 ,  G01R33/3621 ,  G01R33/5608 ,  G01R33/5659

摘要： A method for generating a spatially resolved magnetic resonance dataset using a coil arrangement includes providing at least one correction datum based on receiver characteristics of the coil arrangement. The method also includes providing a magnetic resonance dataset with spatially resolved signal intensity data, and correcting the at least one signal intensity datum in the magnetic resonance dataset by the correction datum before or after providing the magnetic resonance dataset.

公开(公告)号：US09651638B2

公开(公告)日：2017-05-16

申请号：US13087272

申请日：2011-04-14

申请人： Dieter Ritter

发明人： Dieter Ritter

IPC分类号： G01R33/44 ,  G01R33/28 ,  G01R33/561

CPC分类号： G01R33/288 ,  G01R33/5612

摘要： A method and a control sequence determination device for determining a magnetic resonance system activation sequence are described. The magnetic resonance system activation sequence includes a multichannel pulse train with a plurality of individual HF pulse trains to be emitted in a parallel manner by the magnetic resonance system by way of different independent high-frequency transmit channels. In this process, a multichannel pulse train is calculated with a predefined target magnetization using an HF pulse optimization method, with optimization taking place with respect to a setpoint deviation of an HF local exposure value from an HF global exposure value. A method for operating a magnetic resonance system and a magnetic resonance system with the control sequence determination device are also described.

公开(公告)号：US09594137B2

公开(公告)日：2017-03-14

申请号：US13847859

申请日：2013-03-20

申请人： Dieter Ritter

发明人： Dieter Ritter

IPC分类号： G01V3/00 ,  G01R33/54 ,  G01R33/561 ,  G01R33/565

CPC分类号： G01R33/543 ,  G01R33/5612 ,  G01R33/5659

摘要： Methods for controlling magnetic resonance systems having a plurality of high frequency transmission channels through which HF pulse trains are emitted in parallel during operation are described. The methods involves specifying a joint reference pulse train for a plurality of the high frequency transmission channels, and determining a transmission scaling factor for each of the high frequency transmission channels in an HF pulse-optimization method by taking into consideration a specified target magnetization to calculate the HF pulse trains for the transmission channels on the basis of the reference pulse train. During calculation of the transmission scaling factors, a target function is created independently of a target magnetization difference in at least a first optimization mode of the HF pulse-optimization method. The target magnetization difference is considered in the HF pulse-optimization method by way of a boundary condition function instead. Pulse optimization devices and magnetic resonance systems are described.

摘要翻译： 描述了在操作期间控制具有多个高频传输通道的磁共振系统的方法，HF脉冲串并行发射。 所述方法涉及为多个高频传输信道指定联合参考脉冲序列，并且通过考虑指定的目标磁化来确定HF脉冲优化方法中的每个高频传输信道的传输缩放因子以计算 基于参考脉冲串的传输通道的HF脉冲串。 在传输缩放因子的计算期间，在HF脉冲优化方法的至少第一优化模式中，独立于目标磁化差产生目标函数。 在HF脉冲优化方法中，通过边界条件函数来考虑目标磁化差。 描述了脉冲优化装置和磁共振系统。

公开(公告)号：US20130285660A1

公开(公告)日：2013-10-31

申请号：US13872101

申请日：2013-04-27

申请人： Dieter Ritter

发明人： Dieter Ritter

IPC分类号： G01R33/54

CPC分类号： G01R33/543 ,  G01R33/246 ,  G01R33/3607 ,  G01R33/5612 ,  G01R33/586

摘要： A method for controlling a magnetic resonance system is provided. The magnetic resonance system includes a plurality of radio-frequency transmit channels via which, in operation, parallel RF pulse trains are transmitted. The method includes specifying a common reference pulse train for the plurality of the radio-frequency transmit channels. The method also includes, determining, in an RF pulse optimization method, taking into account a prespecified target magnetization, a transmit scaling factor for each of the radio-frequency transmit channels in order to calculate the RF pulse trains for the transmit channels on the basis of the reference pulse train. The transmit scaling factors are optimized taking into account a component-induced B1 field maximum value that is dependent upon the transmit scaling factors.

摘要翻译： 提供一种用于控制磁共振系统的方法。 磁共振系统包括多个射频发射信道，在操作中发射并行RF脉冲串。 该方法包括指定用于多个射频发射信道的公共参考脉冲串。 该方法还包括：在RF脉冲优化方法中，考虑到预先指定的目标磁化，确定每个射频发射信道的发射缩放因子，以便在基础上计算发射信道的RF脉冲序列 的参考脉冲串。 考虑到取决于传输缩放因子的分量诱导B1场最大值，优化传输缩放因子。

公开(公告)号：US20130257430A1

公开(公告)日：2013-10-03

申请号：US13847859

申请日：2013-03-20

申请人： Dieter Ritter

发明人： Dieter Ritter

IPC分类号： G01R33/54

CPC分类号： G01R33/543 ,  G01R33/5612 ,  G01R33/5659

摘要： Methods for controlling magnetic resonance systems having a plurality of high frequency transmission channels through which HF pulse trains are emitted in parallel during operation are described. The methods involves specifying a joint reference pulse train for a plurality of the high frequency transmission channels, and determining a transmission scaling factor for each of the high frequency transmission channels in an HF pulse-optimization method by taking into consideration a specified target magnetization to calculate the HF pulse trains for the transmission channels on the basis of the reference pulse train. During calculation of the transmission scaling factors, a target function is created independently of a target magnetization difference in at least a first optimization mode of the HF pulse-optimization method. The target magnetization difference is considered in the HF pulse-optimization method by way of a boundary condition function instead. Pulse optimization devices and magnetic resonance systems are described.

摘要翻译： 描述了在操作期间控制具有多个高频传输通道的磁共振系统的方法，HF脉冲串并行发射。 所述方法涉及为多个高频传输信道指定联合参考脉冲序列，并且通过考虑指定的目标磁化来确定HF脉冲优化方法中的每个高频传输信道的传输缩放因子以计算 基于参考脉冲串的传输通道的HF脉冲串。 在传输缩放因子的计算期间，在HF脉冲优化方法的至少第一优化模式中，独立于目标磁化差产生目标函数。 在HF脉冲优化方法中，通过边界条件函数来考虑目标磁化差。 描述了脉冲优化装置和磁共振系统。

公开(公告)号：US08542013B2

公开(公告)日：2013-09-24

申请号：US13077716

申请日：2011-03-31

申请人： Georg Möβnang ,  Dieter Ritter

发明人： Georg Möβnang ,  Dieter Ritter

IPC分类号： G01V3/00

CPC分类号： G01R33/5612 ,  G01R33/4824

摘要： A method and a control sequence determination device for determining a magnetic resonance system control sequence is provided. A multichannel pulse train with a plurality of individual RF pulse trains is sent out by a magnetic resonance system over different independent radio-frequency channels in parallel. Based on a prespecified k-space gradient trajectory and a prespecified target magnetization, a multichannel pulse train is calculated in an RF pulse optimization method, where in an RF exposure optimization method, the k-space gradient trajectory is optimized using a function parameterizable at least with respect to an RF exposure value of an object under examination.

摘要翻译： 提供了一种用于确定磁共振系统控制序列的方法和控制顺序确定装置。 具有多个单独RF脉冲串的多通道脉冲串通过并联的不同独立射频信道的磁共振系统发出。 基于预先指定的k空间梯度轨迹和预定的目标磁化，在RF脉冲优化方法中计算多通道脉冲序列，其中在RF暴露优化方法中，使用至少可参数化的函数来优化k空间梯度轨迹 关于被检查物体的RF暴露值。

公开(公告)号：US20120194185A1

公开(公告)日：2012-08-02

申请号：US13198348

申请日：2011-08-04

申请人： Dieter Ritter

发明人： Dieter Ritter

IPC分类号： G01R33/48

CPC分类号： G01R33/5612 ,  G01R33/4836 ,  G01R33/543

摘要： A method and control sequence determination facility for determining a magnetic resonance system activation sequence that includes a multichannel pulse train with a plurality of individual HF-pulse trains to be emitted by the magnetic resonance system via different independent high-frequency transmit channels of a transmit facility in a parallel manner are described. The multichannel pulse train is calculated based on a k-space gradient trajectory and a predetermined target magnetization using an HF pulse optimization method. In the HF pulse optimization method, optimization of the multichannel pulse train and/or the k-space gradient trajectory takes account of at least one hardware operating parameter of the transmit facility.

摘要翻译： 一种用于确定磁共振系统激活序列的方法和控制顺序确定设备，其包括具有多个单独HF脉冲序列的多通道脉冲序列，以由磁共振系统经由发射设备的不同独立高频发射信道发射 以平行方式描述。 使用HF脉冲优化方法，基于k空间梯度轨迹和预定目标磁化来计算多通道脉冲串。 在HF脉冲优化方法中，多信号脉冲串和/或k空间梯度轨迹的优化考虑了传输设施的至少一个硬件操作参数。