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    • 2. 发明授权
    • Solenoid valve for hydraulic brake systems with pressure-assisted closing of the valve
    • 用于液压制动系统的电磁阀,带有压力关闭阀
    • US08006951B2
    • 2011-08-30
    • US12029786
    • 2008-02-12
    • Harald GuggenmosMartin KirschnerRobert MuellerPeter Ullmann
    • Harald GuggenmosMartin KirschnerRobert MuellerPeter Ullmann
    • F16K31/06
    • F16K31/0658B60T8/363B60T15/02
    • 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.
    • 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。
    • 3. 发明申请
    • SOLENOID VALVE
    • 电磁阀
    • US20080197308A1
    • 2008-08-21
    • US12029786
    • 2008-02-12
    • Harald GUGGENMOSMartin KirschnerRobert MuellerPeter Ullmann
    • Harald GUGGENMOSMartin KirschnerRobert MuellerPeter Ullmann
    • F16K31/06
    • F16K31/0658B60T8/363B60T15/02
    • 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.
    • 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。
    • 6. 发明申请
    • Method for Obtaining Amplitude and Phase Profiles of RF Pulses for Spatially Selective Excitation
    • 用于获取空间选择性激励的RF脉冲幅度和相位曲线的方法
    • US20100066362A1
    • 2010-03-18
    • US12517573
    • 2007-12-05
    • Peter Ullmann
    • Peter Ullmann
    • G01R33/48
    • G01R33/583G01R33/4836G01R33/5611G01R33/5612G01R33/586
    • 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.
    • 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。
    • 8. 发明申请
    • Method for obtaining amplitude and phase dependencies of RF pulses for spatially selective excitation
    • 用于获得用于空间选择性激发的RF脉冲的幅度和相位依赖性的方法
    • US20100253336A1
    • 2010-10-07
    • US12659926
    • 2010-03-25
    • Johannes SchneiderPeter Ullmann
    • Johannes SchneiderPeter Ullmann
    • G01R33/44
    • G01R33/58G01R33/4833G01R33/4836G01R33/5612G01R33/56518
    • 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.
    • 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。
    • 9. 发明授权
    • Method for position dependent change in the magnetization in an object in a magnetic resonance experiment
    • 磁共振实验中物体磁化位置相关变化的方法
    • US08508227B2
    • 2013-08-13
    • US12897806
    • 2010-10-05
    • Martin HaasPeter UllmannWolfgang RuhmMaxim ZaitsevJürgen Hennig
    • Martin HaasPeter UllmannWolfgang RuhmMaxim ZaitsevJürgen Hennig
    • G01V3/00
    • G01R33/4836G01R33/3415G01R33/385G01R33/4833G01R33/5612
    • 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.
    • 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。
    • 10. 发明授权
    • Method for accelerating data acquisition in dynamic magnetic resonance measurements (MRT) using parallel imaging
    • 使用并行成像在动态磁共振测量(MRT)中加速数据采集的方法
    • US08150491B2
    • 2012-04-03
    • US11954428
    • 2007-12-12
    • Bernd JungPeter Ullmann
    • Bernd JungPeter Ullmann
    • A61B5/05
    • G01R33/5611
    • 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.
    • 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。