公开(公告)号：US09885768B2

公开(公告)日：2018-02-06

申请号：US14009113

申请日：2012-04-18

申请人： Peter Ullmann ,  Johannes Schneider ,  Wolfgang Ruhm

发明人： Peter Ullmann ,  Johannes Schneider ,  Wolfgang Ruhm

IPC分类号： G01V3/00 ,  G01R33/44 ,  G01R33/561

CPC分类号： G01R33/443 ,  G01R33/5612 ,  G01R33/5614

摘要： A method for generating a desired temporal profile of the magnetization state in an object under examination (O) during an experiment involving magnetic resonance is characterized in that at least one spatially dependent change in the magnetization state inside the object under examination (O) is predefined and spatially selective radio-frequency pulses, which allow a simultaneous and independent change in the magnetization state at locations with different stipulations, are irradiated in order to implement the predefined spatially dependent change in the magnetization state. The method permits establishment of the same desired temporal profile of the magnetization state for different regions of the object under examination despite different given experimental parameters or deliberate generation of different desired profiles of the magnetization state at different locations.

公开(公告)号：US09958522B2

公开(公告)日：2018-05-01

申请号：US14009116

申请日：2012-04-18

申请人： Wolfgang Ruhm ,  Johannes Schneider ,  Peter Ullmann

发明人： Wolfgang Ruhm ,  Johannes Schneider ,  Peter Ullmann

IPC分类号： G01R33/483 ,  A61B5/055 ,  G01R33/561 ,  G01R33/24 ,  G01R33/385

CPC分类号： G01R33/4833 ,  A61B5/055 ,  G01R33/246 ,  G01R33/385 ,  G01R33/4836 ,  G01R33/561 ,  G01R33/5612

摘要： A method for determining the spatial distribution of magnetic resonance signals from at least one of N subvolumes predefines a reception encoding scheme and determines unique spatial encoding for at least one of the subvolumes but not for the entire volume under examination (UV). A transmission encoding scheme is also defined, wherein encoding is effected via the amplitude and/or phase of the transverse magnetization. The temporal amplitude and phase profile of the RF pulses is then calculated and each reception encoding step is carried out I times with variations according to the I transmission encoding steps in the transmission encoding scheme. The method makes it possible to largely restrict the spatially resolving MR signal encoding and image reconstruction to subvolumes of the object under examination without the achievable image quality sensitively depending on imperfections in the MR apparatus.

公开(公告)号：US20100253336A1

公开(公告)日：2010-10-07

申请号：US12659926

申请日：2010-03-25

申请人： Johannes Schneider ,  Peter Ullmann

发明人： Johannes Schneider ,  Peter Ullmann

IPC分类号： G01R33/44

CPC分类号： G01R33/58 ,  G01R33/4833 ,  G01R33/4836 ,  G01R33/5612 ,  G01R33/56518

摘要： A method for obtaining amplitude and phase dependencies of radio frequency pulses, which are irradiated within the scope of a main magnetic resonance experiment for generating a predetermined n-dimensional spatial distribution (n>=1) of transverse magnetization in an object by means of at least one radio frequency transmitting antenna of a magnetic resonance measuring system in combination with spatially and temporally varying additional magnetic fields which are superimposed on the static and homogeneous base field of the magnetic resonance measuring system and change the transverse magnetization phase in the object in dependence on location and time is characterized in that, prior to performance of the main experiment, a preparational measurement is performed in which the change with time of the transverse magnetization phase in the object under the action of the additional magnetic fields is measured in a position-resolved fashion and the amplitude and phase dependencies of the radio frequency pulses for the main experiment are calculated on the basis of this change with time of the transverse magnetization phase, which is measured in a position-resolved fashion. In this fashion, experimental imperfections in the form of unintentional additional magnetic fields can be measured, taken into consideration and compensated for.

摘要翻译： 一种用于获得射频脉冲的幅度和相位依赖性的方法，其被辐射在主磁共振实验的范围内，用于通过在线对象中产生物体中横向磁化的预定的n维空间分布（n> = 1） 磁共振测量系统的至少一个射频发射天线与空间和时间上变化的附加磁场相结合，该附加磁场叠加在磁共振测量系统的静态和均匀基极上，并且依赖于 位置和时间的特征在于，在主实验执行之前，进行准备测量，其中在附加磁场的作用下物体中的横向磁化相位随时间的变化在位置分辨 时尚和辐射的幅度和相位依赖性 基于这种以横向磁化相的时间的变化计算主实验的频率脉冲，其以位置分辨的方式测量。 以这种方式，可以测量和补偿无意的附加磁场形式的实验缺陷。

公开(公告)号：US20150084627A1

公开(公告)日：2015-03-26

申请号：US14009116

申请日：2012-04-18

申请人： Wofgang Ruhm ,  Johannes Schneider ,  Peter Ullmann

发明人： Wofgang Ruhm ,  Johannes Schneider ,  Peter Ullmann

IPC分类号： G01R33/483 ,  G01R33/24 ,  G01R33/385 ,  G01R33/561

CPC分类号： G01R33/4833 ,  A61B5/055 ,  G01R33/246 ,  G01R33/385 ,  G01R33/4836 ,  G01R33/561 ,  G01R33/5612

摘要： A method for determining the spatial distribution of magnetic resonance signals from at least one of N subvolumes predefines a reception encoding scheme and determines unique spatial encoding for at least one of the subvolumes but not for the entire volume under examination (UV). A transmission encoding scheme is also defined, wherein encoding is effected via the amplitude and/or phase of the transverse magnetization. The temporal amplitude and phase profile of the RF pulses is then calculated and each reception encoding step is carried out I times with variations according to the I transmission encoding steps in the transmission encoding scheme. The method makes it possible to largely restrict the spatially resolving MR signal encoding and image reconstruction to subvolumes of the object under examination without the achievable image quality sensitively depending on imperfections in the MR apparatus.

摘要翻译： 用于确定来自N个子卷中的至少一个的磁共振信号的空间分布的方法预先定义接收编码方案，并且确定至少一个子卷的唯一的空间编码，而不是对于检查中的整个体积（UV）。 还定义了传输编码方案，其中通过横向磁化的幅度和/或相位实现编码。 然后计算RF脉冲的时间幅度和相位曲线，并且根据传输编码方案中的I传输编码步骤，根据变化执行每个接收编码步骤I次。 该方法使得可以根据MR设备中的缺陷，将空间分辨的MR信号编码和图像重建大大地限制在被检查物体的子体积上，而不会使可实现的图像质量敏感。

公开(公告)号：US08508224B2

公开(公告)日：2013-08-13

申请号：US12659926

申请日：2010-03-25

申请人： Johannes Schneider ,  Peter Ullmann

发明人： Johannes Schneider ,  Peter Ullmann

IPC分类号： G01V3/00

CPC分类号： G01R33/58 ,  G01R33/4833 ,  G01R33/4836 ,  G01R33/5612 ,  G01R33/56518

摘要： A method for obtaining amplitude and phase dependencies of radio frequency pulses, which are irradiated within the scope of a main magnetic resonance experiment for generating a predetermined n-dimensional spatial distribution (n>=1) of transverse magnetization in an object by means of at least one radio frequency transmitting antenna of a magnetic resonance measuring system in combination with spatially and temporally varying additional magnetic fields which are superimposed on the static and homogeneous base field of the magnetic resonance measuring system and change the transverse magnetization phase in the object in dependence on location and time is characterized in that, prior to performance of the main experiment, a preparational measurement is performed in which the change with time of the transverse magnetization phase in the object under the action of the additional magnetic fields is measured in a position-resolved fashion and the amplitude and phase dependencies of the radio frequency pulses for the main experiment are calculated on the basis of this change with time of the transverse magnetization phase, which is measured in a position-resolved fashion. In this fashion, experimental imperfections in the form of unintentional additional magnetic fields can be measured, taken into consideration and compensated for.

摘要翻译： 一种用于获得射频脉冲的幅度和相位依赖性的方法，其被辐射在主磁共振实验的范围内，用于通过在线对象中产生物体中横向磁化的预定的n维空间分布（n> = 1） 磁共振测量系统的至少一个射频发射天线与空间和时间上变化的附加磁场相结合，该附加磁场叠加在磁共振测量系统的静态和均匀基极上，并且依赖于 位置和时间的特征在于，在主实验执行之前，进行准备测量，其中在附加磁场的作用下物体中的横向磁化相位随时间的变化在位置分辨 时尚和辐射的幅度和相位依赖性 基于这种以横向磁化相的时间的变化计算主实验的频率脉冲，其以位置分辨的方式测量。 以这种方式，可以测量和补偿无意的附加磁场形式的实验缺陷。

公开(公告)号：US20100066362A1

公开(公告)日：2010-03-18

申请号：US12517573

申请日：2007-12-05

申请人： Peter Ullmann

发明人： Peter Ullmann

IPC分类号： G01R33/48

CPC分类号： G01R33/583 ,  G01R33/4836 ,  G01R33/5611 ,  G01R33/5612 ,  G01R33/586

摘要： A method for determining amplitude and phase dependencies of radio frequency pulses that are irradiated during traversal of a defined k-space trajectory to produce a spatial pattern of the transverse magnetization in an MR experiment using at least one RF transmission antenna, is characterized in that, in a calibration step, a set of basic pulses is defined, each basic pulse is irradiated individually, the specified k-space trajectory is traversed and at least one set of basic patterns is produced by detection of the MR signals thus excited, which in a range to be examined of the object, are proportional to the complex transverse magnetization produced, wherein the k-space trajectory is traversed fully identically every time at least from the beginning of the irradiation of each basic pulse, and, in a calculation step, a defined target pattern is approximated with a linear combination of the basic patterns of a set or with a mathematical association of linear combinations, with which, within each set, the basic patterns are identically combined, and the amplitude and phase dependencies to be determined are obtained as the corresponding linear combination of the basic pulses. Experimental imperfections can be intrinsically compensated for in this way.

摘要翻译： 用于确定在使用至少一个RF发射天线的MR实验中在定义的k空间轨迹遍历期间照射的射频脉冲的幅度和相位依赖性以产生横向磁化的空间模式的方法，其特征在于， 在校准步骤中，定义一组基本脉冲，单独照射每个基本脉冲，遍历指定的k空间轨迹，并通过检测由此激发的MR信号产生至少一组基本图案， 要检查物体的范围与产生的复杂横向磁化率成比例，其中至少从每个基本脉冲的照射的开始每次至少从每个基本脉冲开始遍历k空间轨迹，并且在计算步骤中， 定义的目标模式用一组的基本模式或线性组合的数学关联的线性组合近似， 在每组中，基本模式被相同地组合，并且获得要确定的幅度和相位依赖性作为基本脉冲的相应线性组合。 实际的缺陷可以以这种方式进行固有的补偿。

公开(公告)号：US20070102249A1

公开(公告)日：2007-05-10

申请号：US11523036

申请日：2006-09-19

申请人： Peter Ullmann ,  Christoph Kasper ,  Cedric Leboisne

发明人： Peter Ullmann ,  Christoph Kasper ,  Cedric Leboisne

IPC分类号： F16D55/08

CPC分类号： B60T11/04 ,  F16D41/105 ,  F16D43/02

摘要： A parking brake for a vehicle, including a parking brake unit, a drive unit, an actuating device situated between the parking brake unit and the drive unit, which actuating device is drivable by the drive unit and actuates the parking brake unit, and a mechanical locking device situated between the drive unit and the actuating device, which locking device, when a drive torque is interrupted, automatically locks the actuating device in order to mechanically lock the parking brake unit in a braking position; the locking occurs by means of a counteracting torque, which acts on the locking device after the interruption of the drive torque.

摘要翻译： 一种用于车辆的驻车制动器，包括驻车制动单元，驱动单元，位于驻车制动单元和驱动单元之间的致动装置，该致动装置可由驱动单元驱动并致动驻车制动单元，机械 所述锁定装置位于所述驱动单元和所述致动装置之间，当所述驱动扭矩被中断时，所述锁定装置自动锁定所述致动装置，以将所述驻车制动单元机械地锁定在制动位置; 通过在驱动扭矩中断之后作用在锁定装置上的抵消扭矩发生锁定。

公开(公告)号：US08508227B2

公开(公告)日：2013-08-13

申请号：US12897806

申请日：2010-10-05

申请人： Martin Haas ,  Peter Ullmann ,  Wolfgang Ruhm ,  Maxim Zaitsev ,  Jürgen Hennig

发明人： Martin Haas ,  Peter Ullmann ,  Wolfgang Ruhm ,  Maxim Zaitsev ,  Jürgen Hennig

IPC分类号： G01V3/00

CPC分类号： G01R33/4836 ,  G01R33/3415 ,  G01R33/385 ,  G01R33/4833 ,  G01R33/5612

摘要： A method for position dependent change in the magnetization in an object, according to a requirement in a magnetic resonance measurement, wherein radio-frequency pulses are irradiated in conjunction with supplementary magnetic fields that vary in space and over time and are superposed on the static and homogeneous basic field of a magnetic resonance measurement apparatus along a z-direction, is characterized in that non-linear supplementary magnetic fields are used, whose spatial gradient of the z-component is not constant at least at one instant of the irradiation, and that the radio-frequency pulses to be irradiated are calculated in advance, wherein progressions over time of the field strengths of the supplementary magnetic fields in the region of the object that are calculated and/or measured position-dependently are included in this calculation. This enables change in the magnetization with an at least locally spatially higher resolution and/or shorter irradiation duration of the RF pulses and supplementary magnetic fields than is feasible with linear supplementary magnetic fields produced by conventional gradient systems. In particular, this is possible under the technical and physiological conditions that currently constrain the performance of the known methods using linear supplementary fields.

摘要翻译： 根据磁共振测量中的要求，对物体的磁化位置相关变化的方法，其中射频脉冲与空间和时间上变化并叠加在静态和 磁共振测量装置沿z方向的均匀基本场的特征在于，使用非线性辅助磁​​场，其至少在照射一瞬间z分量的空间梯度不恒定，并且 预先计算要照射的射频脉冲，其中在该计算中包括在计算和/或测量的对象的区域中的辅助磁场的场强随时间的逐渐增加。 这使得能够利用由常规梯度系统产生的线性补充磁场可行的RF脉冲和辅助磁场的至少局部空间上更高的分辨率和/或更短的照射持续时间来改变磁化。 特别地，这在目前限制使用线性补充领域的已知方法的性能的技术和生理条件下是可能的。

公开(公告)号：US08150491B2

公开(公告)日：2012-04-03

申请号：US11954428

申请日：2007-12-12

申请人： Bernd Jung ,  Peter Ullmann

发明人： Bernd Jung ,  Peter Ullmann

IPC分类号： A61B5/05

CPC分类号： G01R33/5611

摘要： A method for time-resolved imaging of N-dimensional magnetic resonance (=MR) with the following steps: Acquisition of MR signals from a sample volume by parallel imaging, wherein N-dimensional data matrices (M1, M2, . . . MNt) in k-space is acquired undersampled from each receiver coil, wherein the acquisition of the MR signals is performed according to an acquisition scheme that is periodic over time and describes the time sequence of the undersampled data matrices (M1, M2, . . . Mn) and reconstruction of missing data points (FP) of the acquisition scheme using a set of coil weighting factors (CW, ) and using N+1-dimensional reconstruction kernels (RK, RK′ RK″) is characterized in that reconstruction of the missing data points (FP) is performed using a single reconstruction geometry, wherein each reconstruction kernel comprises an (N+1)-dimensional target area (TB), wherein all non-acquired data points (TP) are reconstructed within the associated target area (TB) using each reconstruction kernel (RK, RK′ RK″), and wherein the target area (TB) exhibits at least the extent (nR×mR) in the ky-t plane of the acquisition scheme. This can shorten the computation time for reconstruction and reduce reconstruction artifacts and optimize the signal-to-noise ratio.

摘要翻译： 一种用于以下步骤对N维磁共振（= MR）进行时间分辨成像的方法：通过并行成像从样本体积获取MR信号，其中N维数据矩阵（M1，M2，... MNt） 在每个接收器线圈中采集的k空间被采样，其中根据随时间周期性的获取方案来执行MR信号的采集，并且描述欠采样数据矩阵（M1，M2，...，Mn）的时间序列 ）和使用一组线圈加权因子（CW，）和使用N + 1维重建内核（RK，RK'RK“）的采集方案的丢失数据点（FP）的重建的特征在于重建 使用单个重建几何来执行丢失数据点（FP），其中每个重建内核包括（N + 1）维目标区域（TB），其中所有非获取数据点（TP）在相关联的 目标区域（TB） 构建核心（RK，RK'RK“），并且其中目标区域（TB）在采集方案的ky-t平面中表现出至少程度（nR×mR）。 这可以缩短重建的计算时间并减少重建伪像并优化信噪比。

公开(公告)号：US08006951B2

公开(公告)日：2011-08-30

申请号：US12029786

申请日：2008-02-12

申请人： Harald Guggenmos ,  Martin Kirschner ,  Robert Mueller ,  Peter Ullmann

发明人： Harald Guggenmos ,  Martin Kirschner ,  Robert Mueller ,  Peter Ullmann

IPC分类号： F16K31/06

CPC分类号： F16K31/0658 ,  B60T8/363 ,  B60T15/02

摘要： Disclosed is a solenoid valve having a magnet unit and a valve cartridge having a capsule, an armature guided longitudinally in the capsule and connected to a sealing pin guided longitudinally inside a valve insert, and a valve body with a sealing seat; a magnetic force generated by the magnet unit moves the armature together with the sealing pin from an initial position toward the valve body counter to the force of a return spring, causing the sealing pin to move into and close the sealing seat in an end position, where the initial position represents a maximum volumetric flow between a valve inlet and a valve outlet. A spring support is embodied and situated so that the return spring is supported outside the volumetric flow and presses the armature into the initial position against the capsule, and the inlet and outlet are embodied and situated so that the direction of the volumetric flow assists the closing motion of the armature with the sealing pin.

摘要翻译： 公开了一种电磁阀，其具有磁体单元和具有胶囊的阀芯，电枢在胶囊中纵向引导并且连接到在阀插入件内纵向引导的密封销，以及具有密封座的阀体; 由磁体单元产生的磁力使电枢与密封销一起从初始位置朝向阀体抵靠复位弹簧的力移动，导致密封销进入和关闭密封座在终端位置， 其中初始位置表示阀入口和阀出口之间的最大体积流量。 弹簧支撑件被实施和定位，使得复位弹簧被支撑在体积流动之外并且将电枢压到抵靠胶囊的初始位置，并且入口和出口被实施和定位成使得容积流的方向有助于关闭 电枢与密封销的运动。