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11. 发明专利

JPS61111448A Probe for nuclear magnetic resonance spectral method with atleast one surface coil 失效
标题翻译：具有ATLEAST ONE SURFACE COIL的核磁共振光谱法探测
公开(公告)号：JPS61111448A
公开(公告)日：1986-05-29
申请号：JP17776085
申请日：1985-08-14
申请人： Gen Electric
发明人： POORU AASAA BOTOMUREI
IPC分类号： G01R33/48 , A61B5/055 , A61B10/00 , G01N27/30 , G01R33/32 , G01R33/341 , G01R33/36 , G01R33/483
CPC分类号： G01R33/3635 , G01R33/34007 , G01R33/341 , G01R33/3415 , G01R33/422 , G01R33/4831 , Y10S505/844
摘要： An NMR spectroscopy body probe is comprised of at least one surface coil, each coil having at least one turn and positioned adjacent to a first surface of an insulative member; an electric-field-reducing shield is fabricated upon the other surface of the relatively flexible substrate. The shield surface of the probe is to be positioned closest to the sample. A plurality of surface coil-bearing substrates can be stacked, one adjacent to the other with the planes thereof substantially parallel to each other and to the plane of the electric-field shield, and with each individual surface coil being separately tunable to a different nuclei species resonance frequency. Each surface coil can be utilized for both transmission and reception, or can be used for only reception of the re-radiated signal from the sample, with a separate excitation coil being provided with a radius substantially greater than the average radius of the (receiver) surface coil and positioned in the plane of any of the at least one receiving surface coils.

12. 发明申请

WO2008134892A1 METHOD FOR RADIO-FREQUENCY NUCLEAR MAGNETIC RESONANCE IMAGING 审中-公开
标题翻译：无线电频率核磁共振成像方法
公开(公告)号：WO2008134892A1
公开(公告)日：2008-11-13
申请号：PCT/CA2008/000868
申请日：2008-05-02
申请人： NATIONAL RESEARCH COUNCIL OF CANADA , KING, Scott , SHARP, Jonathan
发明人： KING, Scott , SHARP, Jonathan
IPC分类号： G01R33/54 , G01R33/32 , G01R33/38
CPC分类号： G01R33/3415 , G01R33/34061 , G01R33/482 , G01R33/4831 , G01R33/5612 , G01R33/5617
摘要： Accumulated spin magnetization phase within a RF MRI procedure can be used for providing an orderly k-space traversal. By operating a transmit array adapted to produce two Bl fields in alternation, where the Bl fields are substantially uniform in amplitude over a sample volume of the MRI setup, and the Bl fields have respective spatial phase distributions such that selection of a difference in spatial derivatives of the spatial phase distributions permits control over a size of a step in k- space applied by successive refocusing pulses for generating the B l fields in alternation. Each alternating refocusing pulse issued within a T2 time causes a step through k-space in an encoding direction determined by the difference in spatial derivatives.
摘要翻译： RF MRI程序内的累积自旋磁化相可用于提供有序的k空间遍历。通过操作适于产生交替的两个B1场的发射阵列，其中B1场在MRI设置的采样体积上幅度基本上均匀，并且B1场具有相应的空间相位分布，使得选择空间导数的差异的空间相位分布允许通过连续重聚焦脉冲施加的k空间中的步长的尺寸的控制，以便交替地生成B l场。在T2时间内发出的每个交替重聚焦脉冲在由空间导数的差异确定的编码方向上产生通过k空间的步长。

13. 发明申请

WO2008053436A1 MRI RF ENCODING USING MULTIPLE TRANSMIT COILS 审中-公开
标题翻译：使用多个发送线圈的MRI RF编码
公开(公告)号：WO2008053436A1
公开(公告)日：2008-05-08
申请号：PCT/IB2007/054416
申请日：2007-10-31
申请人： PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KONINKLIJKE PHILIPS ELECTRONICS N. V. , KATSCHER, Ulrich , VERNICKEL, Peter , BOERNERT, Peter
发明人： KATSCHER, Ulrich , VERNICKEL, Peter , BOERNERT, Peter
IPC分类号： G01R33/483 , G01R33/3415
CPC分类号： G01R33/4831 , G01R33/3415
摘要： A common method of RF encoding assumes that the Bi field generated by the RF coils is linear, which is likely not the case in many situations. It is therefore desirable to have a method of operating an MR system to reconstruct an image of a subject, wherein the method is capable of also handling arbitrary Bi fields used for RF encoding. Accordingly, such an MR system employing one or more RF coils is disclosed herein. The method comprises obtaining transmit sensitivities and weighting factors for individual RF coils. Each RF coil is activated based on its respective weighting factor to apply RF excitation to a subject under examination in the MR system. MR signals - such as free induction decays (FID) signals or echo signals - generated from the subject in response to the RF excitation are received and processed based on the transmit sensitivities to generate an MR image or spectrum representative of the subject.
摘要翻译： RF编码的常见方法假设由RF线圈产生的Bi场线是线性的，这在许多情况下可能不是这种情况。因此，期望具有操作MR系统以重建对象的图像的方法，其中该方法还能够处理用于RF编码的任意Bi字段。因此，本文公开了采用一个或多个RF线圈的这种MR系统。该方法包括获得单个RF线圈的发射灵敏度和加权因子。每个RF线圈基于其相应的加权因子被激活，以将RF激励施加到在MR系统中被检查的受试者。基于发射灵敏度接收和处理从受试者响应于RF激发而产生的MR信号 - 诸如自发感应衰减（FID）信号或回波信号），以产生代表对象的MR图像或频谱。

14. 发明申请

WO2014091374A3 MOTION DETECTION AND CORRECTION METHOD FOR MAGNETIC RESONANCE DIFFUSION WEIGHTED IMAGING (DWI) 审中-公开
标题翻译：用于磁共振扩散加权成像（DWI）的运动检测和校正方法
公开(公告)号：WO2014091374A3
公开(公告)日：2014-11-06
申请号：PCT/IB2013060691
申请日：2013-12-06
申请人： KONINKL PHILIPS NV , PHILIPS DEUTSCHLAND GMBH
发明人： STEHNING CHRISTIAN , PERKINS THOMAS , SENEGAS JULIEN , KEUPP JOCHEN
IPC分类号： G01R33/563 , G01R33/565
CPC分类号： G01R33/56341 , G01R33/4831 , G01R33/56509
摘要： A magnetic resonance imaging system (1) includes at least one processor (28) configured to receive (48) diffusion weighted imaging data based on a diffusion weighted imaging sequence with magnetic gradient fields applied in different directions and with different b-values. The at least one processor (28) is further configured to detect (50) motion corrupted data present in the received imaging data based on a comparison of data redundant in the received data, and substitute (52) alternative data for detected motion corrupted data.
摘要翻译：磁共振成像系统（1）包括至少一个处理器（28），其被配置为基于扩散加权成像序列接收（48）扩散加权成像数据，所述扩散加权成像序列具有在不同方向上应用并具有不同b值的磁梯度场。所述至少一个处理器（28）还被配置为基于所接收的数据中冗余的数据的比较来检测（50）所接收的成像数据中存在的运动损坏的数据，并且替换（52）用于检测到的运动损坏的数据的备选数据。

15. 发明申请

WO2012076545A1 PROCÉDÉ DE CARACTÉRISATION D'ÉCHANTILLON SOLIDE PAR SPECTROMÉTRIE RMN ET APPAREIL POUR LA MISE EN OEUVRE DU PROCÉDÉ 审中-公开
标题翻译：通过NMR光谱法表征固体样品的方法，以及实施方法的装置
公开(公告)号：WO2012076545A1
公开(公告)日：2012-06-14
申请号：PCT/EP2011/071960
申请日：2011-12-06
申请人： CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS) , UNIVERSITE DE RENNES 1 , GRENIER, Denis , SAINT-JALMES, Hervé
发明人： GRENIER, Denis , SAINT-JALMES, Hervé
IPC分类号： G01R33/483
CPC分类号： G01R33/483 , G01R33/4831
摘要： L'invention concerne un procédé de caractérisation d'un échantillon (2) au moyen d'un spectromètre de Résonance Magnétique Nucléaire dans lequel un champ efficace (B eff ) ayant un vecteur efficace (I) et résultant d'un champ magnétique statique (B 0 ) et d'un champ magnétique radiofréquence (B 1 ) est généré; caractérisé en ce que le vecteur efficace (I) est tournant par rapport à un référentiel terrestre. L'invention concerne également un appareil (1) pour la mise en œuvre du procédé.
摘要翻译：本发明涉及通过核磁共振光谱仪来表征样品（2）的方法，其中产生有效场（Beff），其中所述场具有有效矢量（I），并且由静磁场 B0）和射频磁场（B1），其特征在于有效矢量（I）相对于地面参考帧旋转。本发明还涉及一种用于实现该方法的装置（1）。

16. 发明申请

WO2014091374A2 MOTION DETECTION AND CORRECTION METHOD FOR MAGNETIC RESONANCE DIFFUSION WEIGHTED IMAGING (DWI) 审中-公开
标题翻译：磁共振扩散加权成像（DWI）的运动检测和校正方法
公开(公告)号：WO2014091374A2
公开(公告)日：2014-06-19
申请号：PCT/IB2013/060691
申请日：2013-12-06
申请人： KONINKLIJKE PHILIPS N.V. , PHILIPS DEUTSCHLAND GMBH
发明人： STEHNING, Christian , PERKINS, Thomas , SENEGAS, Julien , KEUPP, Jochen
IPC分类号： G01R33/563
CPC分类号： G01R33/56341 , G01R33/4831 , G01R33/56509
摘要： A magnetic resonance imaging system (1) includes at least one processor (28) configured to receive (48) diffusion weighted imaging data based on a diffusion weighted imaging sequence with magnetic gradient fields applied in different directions and with different b-values. The at least one processor (28) is further configured to detect (50) motion corrupted data present in the received imaging data based on a comparison of data redundant in the received data, and substitute (52) alternative data for detected motion corrupted data.
摘要翻译：磁共振成像系统（1）包括至少一个处理器（28），其被配置为基于具有在不同方向上施加的磁梯度场的扩散加权成像序列来接收（48）扩散加权成像数据，以及具有不同的b值。所述至少一个处理器（28）还被配置为基于所接收的数据中的冗余数据的比较来检测（50）存在于所接收的成像数据中的运动损坏的数据，并且用替代（52）用于检测到的运动损坏的数据的替代数据。

17. 发明申请

WO99054747A1 MAGNETIC GRADIENT FIELD PROJECTION 审中-公开
标题翻译：磁场梯度投影
公开(公告)号：WO99054747A1
公开(公告)日：1999-10-28
申请号：PCT/GB1999/001177
申请日：1999-04-16
IPC分类号： G01R33/20 , A61B5/055 , G01R33/38 , G01R33/385 , G01R33/44 , G01R33/483 , G01V3/00
CPC分类号： G01R33/3808 , G01N24/084 , G01R33/385 , G01R33/441 , G01R33/4831
摘要： The invention relates to the projection of magnetic gradient fields for use in Magnetic Resonance Imaging. The projection of a gradient outside of a field generating assembly allows imaging of samples which will not physically fit inside the coil confines. An apparatus and method for improving the linearity of the projected gradient field are disclosed. This is achieved by arranging the position of the magnetic field generating coil conductors such that the second derivative of a gradient component is equal to zero. In one practical example the linearity is improved by providing a first circular coil which is positioned so that its centre is offset along the axis of the field generating coil assembly by a distance equal to half the radius of the coil. In another example a pair of current carrying wires are selectively positioned offset from a region of interest.
摘要翻译：本发明涉及用于磁共振成像的磁梯度场的投影。场产生组件外部的梯度的投影允许对物理上不适合线圈限制的样品的成像。公开了一种改善投影梯度场线性度的装置和方法。这是通过布置磁场产生线圈导体的位置使得梯度分量的二阶导数等于零来实现的。在一个实际的例子中，通过提供第一圆形线圈来改善线性度，该第一圆形线圈被定位成使得其中心沿着场产生线圈组件的轴线偏移距离等于线圈半径的距离。在另一示例中，一对载流线选择性地定位为偏离感兴趣区域。

18. 发明公开

US20240337718A1 REAL TIME MONITORING AND PREDICTION OF MOTION IN MRI 审中-公开
公开(公告)号：US20240337718A1
公开(公告)日：2024-10-10
申请号：US18745232
申请日：2024-06-17
申请人： Washington University , Oregon Health and Science University
发明人： Nico Dosenbach , Jonathan Koller , Andrew Van , Abraham Snyder , Amy Mirro , Damien Fair , Eric Earl , Rachel Klein , Oscar Miranda Dominguez , Anders Perrone
IPC分类号： G01R33/565 , A61B5/055 , G01R33/00 , G01R33/483 , G01R33/56
CPC分类号： G01R33/56509 , A61B5/055 , G01R33/0041 , G01R33/4831 , G01R33/5608
摘要： Methods, computer-readable storage devices, and systems are described for reducing movement of a patient undergoing a magnetic resonance imaging (MRI) scan. One method includes receiving a data frame from the MRI system performing the MRI scan of the patient, comparing the data frame to a reference image to assess motion of a body part of the patient during the MRI scan, generating stimulus to be communicated to the patient during the MRI scan based on a task of the MRI scan and the motion of the body part of the patient during the MRI scan, adjusting the stimulus during the MRI scan to adjust the task and as the motion of the body part of the patient changes, and communicating the stimulus to the patient during the MRI scan, wherein the sensory feedback includes at least one of a game, a movie, a cartoon, a shape, or an auditory signal.

19. 发明授权

US09575204B2 Nuclear magnetic resonance logging tool having multiple pad-mounted atomic magnetometers 有权
标题翻译：核磁共振测井仪具有多个焊盘安装的原子磁强计
公开(公告)号：US09575204B2
公开(公告)日：2017-02-21
申请号：US14377813
申请日：2012-02-08
申请人： Songhua Chen , Ron Charles Balliet
发明人： Songhua Chen , Ron Charles Balliet
IPC分类号： G01V3/00 , G01V3/32 , E21B17/10 , G01R33/483 , G01R33/26
CPC分类号： G01V3/32 , E21B17/1021 , G01R33/26 , G01R33/4831
摘要： Various disclosed nuclear magnetic resonance (NMR) logging systems and methods employ a plurality of NMR sensors, including atomic magnetometers, mounted on pads. Certain method embodiments include: utilizing the Earth magnetic field to pre-polarize the protons in a formation; utilizing a plurality of atomic magnetometers to obtain NMR measurements; and determining at least one characteristic relaxation time of the formation. The NMR sensor may optionally include a permanent magnet assembly.
摘要翻译：各种公开的核磁共振（NMR）测井系统和方法使用安装在焊盘上的多个NMR传感器，包括原子磁强计。某些方法实施例包括：利用地球磁场对地层中的质子进行预极化; 利用多个原子磁强计获得NMR测量; 以及确定所述地层的至少一个特征弛豫时间。 NMR传感器可以可选地包括永磁体组件。

20. 发明申请

US20160313424A1 SYSTEM AND METHOD FOR ACQUIRING BOTH T2*-WEIGHTED AND T1-WEIGHTED DATA IN A SINGLE ACQUISITION USING A SINGLE DOSE OF CONTRAST AGENT 审中-公开
标题翻译：使用对比剂的单次剂量在单次采集中获取T2 *加权和T1加权数据的系统和方法
公开(公告)号：US20160313424A1
公开(公告)日：2016-10-27
申请号：US15101166
申请日：2013-12-02
申请人： Northwestern University
发明人： Todd Parrish
IPC分类号： G01R33/50 , G01R33/563
CPC分类号： G01R33/50 , A61B5/055 , G01R33/4816 , G01R33/4818 , G01R33/482 , G01R33/4822 , G01R33/4824 , G01R33/4826 , G01R33/4828 , G01R33/483 , G01R33/4831 , G01R33/4833 , G01R33/4835 , G01R33/4836 , G01R33/4838 , G01R33/543 , G01R33/5601 , G01R33/5602 , G01R33/56366 , G01R33/5676
摘要： Described here are systems and methods for obtaining measurements of both tissue perfusion and permeability with a magnetic resonance imaging (“MRI”) system after the administration of a single dose of contrast agent. To this end, the MRI system is directed to acquire T2*-weighted data, during which the acquired signal values are monitored for a trigger event. When the trigger event occurs, the MRI system is directed to switch from acquiring the T2*-weighted data to acquiring T1-weighted data. The systems and methods of the present invention can thus be used for a fully automated, single acquisition of perfusion and permeability measurements using only a single dose of contrast agent.
摘要翻译：这里描述了在施用单剂量的造影剂之后用磁共振成像（“MRI”）系统获得组织灌注和渗透性测量的系统和方法。为此，MRI系统旨在获取T2 *加权数据，在此期间监视所获取的信号值以获得触发事件。当触发事件发生时，MRI系统被指示从获取T2加权数据到获取T1加权数据。因此，本发明的系统和方法可以用于仅使用单剂量造影剂的全自动单次采集灌注和渗透性测量。

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