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    • 2. 发明申请
    • PERMANENT MAGNETIC ASSEMBLY FOR MAGNETIC PARTICLE IMAGING
    • 用于磁颗粒成像的永久磁性组件
    • WO2010070575A1
    • 2010-06-24
    • PCT/IB2009/055741
    • 2009-12-14
    • PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBHKONINKLIJKE PHILIPS ELECTRONICS N.V.TIMINGER, HolgerWEIZENECKER, JürgenGLEICH, Bernhard
    • TIMINGER, HolgerWEIZENECKER, JürgenGLEICH, Bernhard
    • G01R33/383A61B5/05
    • A61B5/055A61B5/0515G01R33/022G01R33/14G01R33/3802G01R33/383
    • The present invention relates to an arrangement (10) for influencing and/or detecting magnetic particles in a region of action (300). The arrangement (10) comprises selection means (210) for generating a magnetic selection field (211) having a pattern in space of its magnetic field strength such that a first sub-zone (301) having a low magnetic field strength and a second sub-zone (302) having a higher magnetic field strength are formed in the region of action (300), drive means (220) for changing the position in space of the two sub- zones (301, 302) in the region of action (300) by means of a magnetic drive field (221) so that the magnetization of the magnetic material changes locally, and receiving means (230) for acquiring detection signals, which detection signals depend on the magnetization in the region of action (300), which magnetization is influenced by the change in the position in space of the first and second sub-zone (301, 302). The selection means (210) comprises a permanent magnetic assembly having at least one permanent magnetic unit (213) comprising a plurality of magnetic sub-elements (214) wherein the magnetic sub-elements (214) have individually fixed magnetization orientation, and are bonded together to form said at least one permanent magnetic unit (213).
    • 本发明涉及用于在动作区域(300)中影响和/或检测磁性颗粒的装置(10)。 该装置(10)包括选择装置(210),用于产生具有其磁场强度空间中的图案的磁选择场(211),使得具有低磁场强度的第一子区(301)和第二子 在动作区域(300)中形成具有较高磁场强度的区域(302),用于改变动作区域中的两个子区域(301,302)的空间位置的驱动装置(220) 300),借助磁驱动场(221)使得磁性材料的磁化在局部变化,以及用于获取检测信号的接收装置(230),该检测信号取决于作用区域(300)中的磁化, 该磁化受到第一和第二子区(301,302)的空间位置变化的影响。 所述选择装置(210)包括具有至少一个包括多个磁性子元件(214)的永久磁性单元(213)的永久磁性组件,其中所述磁性子元件(214)具有单独固定的磁化取向, 一起形成所述至少一个永磁单元(213)。
    • 3. 发明申请
    • APPARATUS AND METHOD FOR INFLUENCING AND/OR DETECTING MAGNETIC PARTICLES IN A FIELD OF VIEW
    • 在视场中影响和/或检测磁性颗粒的装置和方法
    • WO2011030247A1
    • 2011-03-17
    • PCT/IB2010/053684
    • 2010-08-16
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBHRAHMER, Jürgen, ErwinGLEICH, BernhardWEIZENECKER, Jürgen
    • RAHMER, Jürgen, ErwinGLEICH, BernhardWEIZENECKER, Jürgen
    • A61B5/05
    • A61B5/05A61B5/0515
    • The present invention relates to an apparatus (100) for influencing and/or detecting magnetic particles in a field of view (28), wherein the field of view (28) comprises at least one sub field of interest covering at least a portion of an object of interest containing magnetic particles. The apparatus (100) applying the known principle of Magnetic Particle Imaging (MPI) comprises selection means for generating a magnetic selection field (50) having the known field pattern showing a field free point (FFP), drive means for changing the position in space of the FFP by means of a magnetic drive field, receiving means for acquiring detection signals depending on the magnetization of the magnetic particles within the field of view (28), a control unit (150) for controlling a signal receiving unit (140) comprised in the receiving means for acquiring a set of high resolution detection signals and a set of low resolution detection signals, wherein the set of high resolution detection signals depends on the magnetization of at least one subfield of interest and the set of low resolution detection signals depends on the magnetization of at least one adjacent subfield being arranged adjacent to the at least one subfield of interest, and a reconstruction unit (152) for reconstructing a particle distribution quantity depending on the set of high resolution detection signals and the set of low resolution detection signals. The present invention further relates to a corresponding method as well as to a computer program.
    • 本发明涉及一种用于在视场(28)中影响和/或检测磁性颗粒的设备(100),其中视场(28)包括至少一个感兴趣的子场,其覆盖至少一部分 感兴趣的物体包含磁性颗粒。 应用已知的磁性粒子成像原理(MPI)的装置(100)包括选择装置,用于产生具有示出场自由点(FFP)的已知场模式的磁选择场(50),用于改变空间位置的驱动装置 通过磁驱动场的FFP的接收装置,用于获取取决于视野内的磁性颗粒的磁化强度的检测信号的接收装置,用于控制信号接收单元(140)的控制单元(150) 在用于获取一组高分辨率检测信号和一组低分辨率检测信号的接收装置中,其中该组高分辨率检测信号取决于至少一个感兴趣的子场的磁化,并且该组低分辨率检测信号取决于 在与至少一个感兴趣的子场相邻地布置的至少一个相邻子场的磁化上,以及用于重构的重建单元(152) 根据高分辨率检测信号和一组低分辨率检测信号来设定粒子分布量。 本发明还涉及相应的方法以及计算机程序。
    • 5. 发明申请
    • ARRANGEMENT AND METHOD FOR INFLUENCING AND/OR DETECTING MAGNETIC PARTICLES IN A REGION OF ACTION
    • 在行动区域影响和/或检测磁性颗粒的布置方法
    • WO2008078244A2
    • 2008-07-03
    • PCT/IB2007/055131
    • 2007-12-14
    • PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBHKONINKLIJKE PHILIPS ELECTRONICS N.V.GLEICH, BernhardWEIZENECKER, Jürgen
    • GLEICH, BernhardWEIZENECKER, Jürgen
    • A61B5/00G01R33/00G01N27/00
    • A61B5/05A61B5/0515
    • An arrangement for influencing and/or detecting magnetic particles, a method for calibrating such an arrangement and a method for influencing and/or detecting magnetic particles in a region of action is disclosed, which arrangement comprises selection means for generating a magnetic selection field having a pattern in space of its magnetic field strength such that a first sub-zone having a low magnetic field strength and a second sub-zone having a higher magnetic field strength are formed in the region of action, drive means for changing the position in space of the two sub-zones in the region of action by means of a magnetic drive field so that the magnetization of the magnetic particles changes locally, the arrangement comprising a drive signal chain, receiving means for acquiring detection signals, which detection signals depend on the magnetization in the region of action, which magnetization is influenced by the change in the position in space of the first and second sub-zone, the arrangement comprising a detection signal chain, wherein the arrangement comprises a compensation controller providing a compensation signal to the drive signal chain and/or to the detection signal chain by means of a coupling means.
    • 公开了一种用于影响和/或检测磁性颗粒的装置,用于校准这种布置的方法以及用于影响和/或检测磁性颗粒在作用区域中的方法,该装置包括选择装置,用于产生具有 使得具有低磁场强度的第一子区域和具有较高磁场强度的第二子区域的磁场强度的空间图案形成在作用区域中,用于改变空间位置的驱动装置 通过磁驱动场在动作区域中的两个子区域,使得磁性颗粒的磁化在局部变化,该装置包括驱动信号链,用于获取检测信号的接收装置,该检测信号取决于磁化 在作用区域中,哪个磁化受到第一和第二子区域的空间位置的变化的影响 包括检测信号链的装置,其中所述装置包括补偿控制器,该补偿控制器通过耦合装置向驱动信号链和/或检测信号链提供补偿信号。