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公开(公告)号：US08664954B2
公开(公告)日：2014-03-04
申请号：US13257091
申请日：2009-03-31
申请人： Stefan Hetzer , Toralf Mildner , Harald Moeller
发明人： Stefan Hetzer , Toralf Mildner , Harald Moeller
IPC分类号： G01V3/00
CPC分类号： G01R33/5616 , G01R33/4806 , G01R33/4818 , G01R33/482 , G01R33/4828 , G01R33/483 , G01R33/485 , G01R33/5607 , G01R33/56341 , G01R33/56366 , G01R33/56536 , G01R33/56554 , G01R33/56563
摘要： A method of magnetic resonance imaging of an object comprises the steps of arranging the object in a stationary magnetic field, subjecting the object to an excitation and encoding sequence of magnetic field gradients resulting in k-space sampling in two segments along the phase encoding direction, wherein the encoding sequence of the magnetic field gradients is selected such that the two segments in k-space are sampled along trajectories beginning with a central k-space line through the k-space center and continuing to opposite k-space borders of the two segments, collecting magnetic resonance signals created in the object, and reconstructing an image of the object based on the magnetic resonance signals, wherein one central k-space line is sampled in both of the two k-space segments, and intersegment phase and/or intensity deviations are corrected in both k-space segments using the magnetic resonance signals collected along the central k-space line. Furthermore, an imaging device for magnetic resonance imaging of an object is described.
摘要翻译： 物体的磁共振成像的方法包括以下步骤：将物体放置在固定磁场中，使物体受到磁场梯度的激励和编码序列的影响，导致沿着相位编码方向的两段中的k空间采样， 其中选择磁场梯度的编码序列使得k空间中的两个片段沿着通过k空间中心的中心k空间线开始的轨迹被采样，并且连续到两个片段的相反k空间边界 收集在物体中产生的磁共振信号，以及基于磁共振信号重建物体的图像，其中一个中心k空间线在两个k空间段中的两个采样，并且分段相位和/或强度 使用沿着中心k空间线收集的磁共振信号在两个k空间段中校正偏差。 此外，描述了用于物体的磁共振成像的成像装置。
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公开(公告)号：US09234953B2
公开(公告)日：2016-01-12
申请号：US13522696
申请日：2010-01-18
IPC分类号： G01R33/56 , G01R33/34 , G01R33/485 , G01R33/48 , G01R33/561
CPC分类号： G01R33/485 , G01R33/4818 , G01R33/482 , G01R33/5611 , G01R33/5616
摘要： A method of magnetic resonance spectroscopic imaging of an object (O) including at least one chemical species to be imaged, comprising sampling of the k-space such that a plurality of Nω first sampling trajectories through at least one k-space segment of the k-space is formed along a phase-encoding direction, each of said first sampling trajectories beginning in a central k-space region and continuing to a k-space border of the at least one k-space segment and having a duration equal to or below a spectral dwell time corresponding to the reciprocal spectral bandwidth, collecting at least one first set of gradient-echo signals obtained along the first sampling trajectories, collecting at least one second set of gradient-echo signals obtained along a plurality of Nω second sampling trajectories, the Nω second sampling trajectories and the Nω first sampling trajectories being mutually mirrored relative to a predetermined k-space line in the central k-space region.
摘要翻译： 包括至少一种待成像化学物质的物体（O）的磁共振光谱成像方法，包括k空间的采样，使得多个Nω第一采样轨迹通过k的至少一个k空间段 - 空间沿着相位编码方向形成，所述第一采样轨迹中的每一个从中心k空间区域开始并且连续至少一个k空间段的k空间边界并具有等于或低于 收集对应于所述倒数光谱带宽的光谱驻留时间，收集沿着所述第一采样轨迹获得的至少一个第一梯度回波信号集合，收集沿着多个Nω第二采样轨迹获得的至少一个第二组梯度回波信号， Nω第二采样轨迹和Nω第一采样轨迹相对于中心k空间区域中的预定k空间线相互镜像。
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公开(公告)号：US20120313641A1
公开(公告)日：2012-12-13
申请号：US13522696
申请日：2010-01-18
CPC分类号： G01R33/485 , G01R33/4818 , G01R33/482 , G01R33/5611 , G01R33/5616
摘要： A method of magnetic resonance spectroscopic imaging of an object (O) including at least one chemical species to be imaged, comprising sampling of the k-space such that a plurality of Nω first sampling trajectories through at least one k-space segment of the k-space is formed along a phase-encoding direction, each of said first sampling trajectories beginning in a central k-space region and continuing to a k-space border of the at least one k-space segment and having a duration equal to or below a spectral dwell time corresponding to the reciprocal spectral bandwidth, collecting at least one first set of gradient-echo signals obtained along said first sampling trajectories, collecting at least one second set of gradient-echo signals obtained along a plurality of Nω second sampling trajectories, said Nω second sampling trajectories and said Nω first sampling trajectories being mutually mirrored relative to a predetermined k-space line in the central k-space region.
摘要翻译： 包括至少一种待成像化学物质的物体（O）的磁共振光谱成像方法，包括k空间的采样，使得多个Nω第一采样轨迹通过k的至少一个k空间段 - 空间沿着相位编码方向形成，所述第一采样轨迹中的每一个从中心k空间区域开始并且连续至少一个k空间段的k空间边界并具有等于或低于 收集对应于所述倒数光谱带宽的光谱驻留时间，收集沿着所述第一采样轨迹获得的至少一个第一梯度回波信号集合，收集沿着多个Nω第二采样轨迹获得的至少一个第二组梯度回波信号， 所述Nω第二采样轨迹和所述Nω第一采样轨迹相对于中心k空间区域中的预定k空间线相互镜像。
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公开(公告)号：US20120013336A1
公开(公告)日：2012-01-19
申请号：US13257091
申请日：2009-03-31
申请人： Stefan Hetzer , Toralf Mildner , Harald Moeller
发明人： Stefan Hetzer , Toralf Mildner , Harald Moeller
CPC分类号： G01R33/5616 , G01R33/4806 , G01R33/4818 , G01R33/482 , G01R33/4828 , G01R33/483 , G01R33/485 , G01R33/5607 , G01R33/56341 , G01R33/56366 , G01R33/56536 , G01R33/56554 , G01R33/56563
摘要： A method of magnetic resonance imaging of an object comprises the steps of arranging the object in a stationary magnetic field, subjecting the object to an excitation and encoding sequence of magnetic field gradients resulting in k-space sampling in two segments along the phase encoding direction, wherein the encoding sequence of the magnetic field gradients is selected such that the two segments in k-space are sampled along trajectories beginning with a central k-space line through the k-space center and continuing to opposite k-space borders of the two segments, collecting magnetic resonance signals created in the object, and reconstructing an image of the object based on the magnetic resonance signals, wherein one central k-space line is sampled in both of the two k-space segments, and intersegment phase and/or intensity deviations are corrected in both k-space segments using the magnetic resonance signals collected along the central k-space line. Furthermore, an imaging device for magnetic resonance imaging of an object is described.
摘要翻译： 物体的磁共振成像的方法包括以下步骤：将物体放置在固定磁场中，使物体受到磁场梯度的激励和编码序列的影响，导致沿着相位编码方向的两段中的k空间采样， 其中选择磁场梯度的编码序列使得k空间中的两个片段沿着通过k空间中心的中心k空间线开始的轨迹被采样，并且连续到两个片段的相反k空间边界 收集在物体中产生的磁共振信号，以及基于磁共振信号重建物体的图像，其中一个中心k空间线在两个k空间段中的两个采样，并且分段相位和/或强度 使用沿着中心k空间线收集的磁共振信号在两个k空间段中校正偏差。 此外，描述了用于物体的磁共振成像的成像装置。
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公开(公告)号：US08148986B2
公开(公告)日：2012-04-03
申请号：US11659299
申请日：2005-08-04
申请人： Wolfgang Driesel , Toralf Mildner , Harald Moeller
发明人： Wolfgang Driesel , Toralf Mildner , Harald Moeller
IPC分类号： G01V3/00
CPC分类号： G01R33/345 , G01R33/34046 , G01R33/341 , G01R33/3678
摘要： The invention relates to an HF-antenna system for carrying out and/or detecting a magnetic resonance in an object exposed to a main magnetic field which orients the object spins in a desired longitudinal direction (z) comprising at least one first antenna element (1) provided with several conducting sections (11, 12, 13, 14) which lead a high-frequency alternating current and extend from the common top to a base area in the form of separate claws in such a way that the testable object containing a volume of interest is enveloped in a helmet manner. Said invention is characterized in that each conducting section (11, 12, 13, 14) is embodied in the form of a HF (HL) line for electromagnetically connecting a wave propagating in a TEM mode or in an quasi-TEM mode with the spins of the testable object to be enveloped and the electrical length the terminals of the HF (HL) lines are selected in such a way that the magnetic resonance frequency waves are produced therein.
摘要翻译： 本发明涉及一种用于在暴露于主磁场的物体中执行和/或检测磁共振的HF天线系统，该主磁场定向在包括至少一个第一天线元件（1）的所需纵向方向（z）上的物体旋转 ），其设置有多个导电部分（11,12,13,14），其引导高频交流电流并以分开的爪的形式从公共顶部延伸到基部区域，使得可测试物体包含体积 感兴趣的是以头盔的方式包围。 本发明的特征在于，每个导电部分（11,12,13,14）体现为HF（HL）线的形式，用于将以TEM模式或准TEM模式传播的波与旋转电磁连接 的可测试对象被包围，并且电气长度选择HF（HL）线路的端子，使得其中产生磁共振频率波。
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公开(公告)号：US09671478B2
公开(公告)日：2017-06-06
申请号：US14234177
申请日：2011-07-22
CPC分类号： G01R33/36 , G01R33/34007 , G01R33/3415 , G01R33/3628 , G01R33/422 , H01Q7/005 , H01Q7/04
摘要： An antenna (100), which is designed for exciting and/or detecting a magnetic resonance in an object (1) under investigation, comprises a conductor loop (10) with an inner conductor (11) and a primary shield conductor (12), which form at least one waveguide, wherein the primary shield conductor (12) is interrupted by a gap (13), and wherein a secondary shield conductor (14) is provided which surrounds the primary shield conductor (12), wherein a dielectric (15) is arranged between the primary shield conductor (12) and the secondary shield conductor (14) and at least the gap is covered by the secondary shield conductor (14). An antenna arrangement which comprises a plurality of such antennas, a magnetic resonance device, and a method for magnetic resonance imaging or magnetic resonance spectroscopy are also described.
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公开(公告)号：US20090096553A1
公开(公告)日：2009-04-16
申请号：US11659299
申请日：2005-08-04
申请人： Wolfgang Driesel , Toralf Mildner , Harald Moeller
发明人： Wolfgang Driesel , Toralf Mildner , Harald Moeller
CPC分类号： G01R33/345 , G01R33/34046 , G01R33/341 , G01R33/3678
摘要： The invention relates to an HF-antenna system for carrying out and/or detecting a magnetic resonance in an object exposed to a main magnetic field which orients the object spins in a desired longitudinal direction (z) comprising at least one first antenna element (1) provided with several conducting sections (11, 12, 13, 14) which lead a high-frequency alternating current and extend from the common top to a base area in the form of separate claws in such a way that the testable object containing a volume of interest is enveloped in a helmet manner. Said invention is characterized in that each conducting section (11, 12, 13, 14) is embodied in the form of a HF (HL) line for electromagnetically connecting a wave propagating in a TEM mode or in an quasi-TEM mode with the spins of the testable object to be enveloped and the electrical length the terminals of the HF (HL) lines are selected in such a way that the magnetic resonance frequency waves are produced therein.
摘要翻译： 本发明涉及一种用于在暴露于主磁场的物体中执行和/或检测磁共振的HF天线系统，该主磁场定向在包括至少一个第一天线元件（1）的所需纵向方向（z）上的物体旋转 ），其设置有多个导电部分（11,12,13,14），其引导高频交流电流并以分开的爪的形式从公共顶部延伸到基部区域，使得可测试物体包含体积 感兴趣的是以头盔的方式包围。 本发明的特征在于，每个导电部分（11,12,13,14）体现为HF（HL）线的形式，用于将以TEM模式或准TEM模式传播的波与旋转电磁连接 的可测试对象被包围，并且电气长度选择HF（HL）线路的端子，使得其中产生磁共振频率波。
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