公开(公告)号：US09310450B2

公开(公告)日：2016-04-12

申请号：US13522353

申请日：2011-01-31

申请人： Erez Golan

发明人： Erez Golan

IPC分类号： G01R33/483 ,  G01R33/30 ,  G01R33/563 ,  G01R33/341 ,  G01R33/3415

CPC分类号： G01R33/483 ,  G01R33/30 ,  G01R33/341 ,  G01R33/3415 ,  G01R33/56375

摘要： A system (10) for margin assessment of an ex-vivo tissue (18), including an imaging scanner (12) controlled by an imaging control unit (14), and an ex-vivo sample holder (16) for holding a sample of an excised tissue (18), the sample holder (16) being sized such that excised lump edges (24) of the excised tissue (18) are forced against a surface of the sample holder (16) such that the edges (24) change shape to have a predetermined geometry, and wherein the imaging scanner (12) is positioned relative to the sample holder (16) such that the imaging scanner (12) acquires images not of all the tissue (18) but rather of the edges (24) that have the predetermined geometry and which are in a sensitive region (40) extending into a peripheral margin of the tissue (18).

摘要翻译： 一种用于离体组织（18）的边缘评估的系统（10），包括由成像控制单元（14）控制的成像扫描仪（12），以及用于保持样品的样品的离体样品保持器（16） 切除的组织（18），样本保持器（16）的尺寸使得切除的组织（18）的切除的块边缘（24）被迫抵靠在样品架（16）的表面上，使得边缘（24）改变 形状具有预定的几何形状，并且其中成像扫描器（12）相对于样品保持器（16）定位，使得成像扫描器（12）获取不是所有组织（18）的图像，而是获取边缘（24） ），其具有预定几何形状并且位于延伸到组织（18）的周边边缘的敏感区域（40）中。

公开(公告)号：US20150346305A1

公开(公告)日：2015-12-03

申请号：US14288772

申请日：2014-05-28

申请人： General Electric Company

发明人： Kevin F. King

IPC分类号： G01R33/561 ,  G01R33/385 ,  G01R33/341 ,  G01R33/3815 ,  G01R33/48 ,  G01R33/54

CPC分类号： G01R33/5611 ,  G01R33/385 ,  G01R33/4818

摘要： A method for generating a magnetic resonance (MR) image includes applying a pulse sequence including a quadratic field gradient. A first k-space data set is acquired from each of a plurality of RF coils where each first k-space data set including uniformly undersampled data. A randomly undersampled k-space data set is generated for each RF coil from the first k-space data set. A compressed sensing reconstruction technique is applied to the randomly undersampled k-space data set of each RF coil to generate a second k-space data set for each RF coil where each second k-space data set including uniformly undersampled data. A phase scrambling reconstruction technique is applied to the second k-space data set of each RF coil to generate a low resolution coil image for each RF coil. A MR image is generated by applying a parallel imaging technique to the low resolution coil image and second k-space data set for each RF coil.

摘要翻译： 用于产生磁共振（MR）图像的方法包括应用包括二次场梯度的脉冲序列。 从多个RF线圈中的每一个获取第一k空间数据集，其中每个第一k空间数据集包括均匀的欠采样数据。 对于来自第一k空间数据集的每个RF线圈生成随机欠采样的k空间数据集。 将压缩感测重构技术应用于每个RF线圈的随机欠采样k空间数据集，以为每个RF线圈生成第二k空间数据集，其中每个第二k空间数据集包括均匀的欠采样数据。 将相位加扰重构技术应用于每个RF线圈的第二k空间数据集，以产生每个RF线圈的低分辨率线圈图像。 通过将并行成像技术应用于针对每个RF线圈的低分辨率线圈图像和第二k空间数据集来生成MR图像。

公开(公告)号：US09146288B2

公开(公告)日：2015-09-29

申请号：US13755272

申请日：2013-01-31

申请人： GE MEDICAL SYSTEMS GLOBAL TECHNOLOGY COMPANY, LLC

发明人： Haoyang Xing ,  Yu Liu ,  Anmou Liao ,  Kai Wang ,  Chenxing Zhao ,  Qibin Peng

IPC分类号： G01V3/00 ,  G01R33/36 ,  G01R33/341

CPC分类号： G01R33/3614 ,  G01R33/341 ,  G01R33/3664

摘要： A method for implementing a switching between a body coil and a head coil in a nuclear magnetic resonance imaging system comprising the body coil, the head coil and a power amplifier component, wherein the power amplifier component comprises sets of power amplifiers, each set of power amplifiers comprising channels of power amplifiers combined by a Wilkinson circuit, a combiner configured to combine signals from the sets of power amplifiers and to connect the sets of power amplifiers to the body coil, a first switching device comprising a first terminal configured to be grounded, a second switching device connected in series in a resistor branch of the Wilkinson circuit, and a ¼ wavelength transformation transmission line located between the second switching device and the head coil, the method comprising connecting the power amplifier component to the body coil or the head coil by setting states of both switching devices.

摘要翻译： 一种用于在包括体线圈，头线圈和功率放大器部件的核磁共振成像系统中实现体线圈和头线圈之间的切换的方法，其中功率放大器部件包括功率放大器组，每组功率 放大器，包括由Wilkinson电路组合的功率放大器的通道，组合器，其被配置为组合来自所述功率放大器组的信号并将所述功率放大器组连接到所述体线圈;第一开关器件，包括被配置为接地的第一端子， 在威尔金森电路的电阻分支中串联连接的第二开关器件和位于第二开关器件与头部线圈之间的1/4波长变换传输线，该方法包括将功率放大器部件连接到体线圈或头部线圈 通过设置两个开关装置的状态。

公开(公告)号：US20150212174A1

公开(公告)日：2015-07-30

申请号：US14685021

申请日：2015-04-13

申请人： Case Western Reserve University

发明人： Robert W. Brown ,  Yong Wu ,  Zhen Yao ,  Shmaryu Shvartsman ,  Thomas Chmielewski ,  Timothy Eagan

IPC分类号： G01R33/422 ,  G01R33/48 ,  G01R33/385 ,  G01R33/565 ,  G01R33/341

CPC分类号： G01R33/422 ,  G01R33/341 ,  G01R33/385 ,  G01R33/4822 ,  G01R33/56518 ,  Y10T83/505

摘要： Radio frequency (RF) shields used with magnetic resonance imaging (MRI) apparatus may experience gradient field induced eddy currents and RF field induced eddy currents. These eddy currents can cause the RF shield to heat up at an undesirable rate. RF shields are designed to have a desired degree of RF shielding and a desired heating attribute. Design goals for RF shields include gradient field transparency and RF field opacity, both of which can be influenced by eddy currents. Example methods identify a gradient field that will induce eddy currents and identify an RF field that will induce eddy currents. If a region on the RF shield is identified where the desired heating attribute will not be achieved, then a pattern of axial cuts and azimuthal cuts can be made in the RF shield to reduce gradient eddy current heating in the RF shield while maintaining desired RF shielding.

摘要翻译： 与磁共振成像（MRI）装置一起使用的射频（RF）屏蔽可能会经历梯度场感应涡流和射频场感应涡流。 这些涡流可以使RF屏蔽以不期望的速率加热。 RF屏蔽被设计为具有期望的RF屏蔽程度和期望的加热属性。 RF屏蔽的设计目标包括梯度场透明度和RF场不透明度，这两者都可以受涡流影响。 示例性方法识别将引起涡流的梯度场，并识别将产生涡流的RF场。 如果RF屏蔽上的区域被识别出将不能实现所需的加热属性，则可以在RF屏蔽中进行轴向切割和方位切割的图案，以减少RF屏蔽中的梯度涡流加热，同时保持所需的RF屏蔽 。

公开(公告)号：US09063060B2

公开(公告)日：2015-06-23

申请号：US13269755

申请日：2011-10-10

申请人： Munehiro Inukai ,  Yasuto Noda ,  Kazuyuki Takeda ,  Kiyonori Takegoshi ,  Takashi Mizuno

发明人： Munehiro Inukai ,  Yasuto Noda ,  Kazuyuki Takeda ,  Kiyonori Takegoshi ,  Takashi Mizuno

IPC分类号： G01V3/00 ,  G01N24/08 ,  G01R33/30 ,  G01R33/31 ,  G01R33/341

CPC分类号： G01N24/08 ,  G01R33/30 ,  G01R33/307 ,  G01R33/31 ,  G01R33/341

摘要： A high-resolution solid-state NMR spectrometer which can measure a disklike sample. The spectrometer includes: a stator having an air bearing disposed within the static magnetic field, the rotor being disposed in the stator; and an engaging mechanism mounted in a one-end portion of the rotor and detachably holding a sample holder that holds the disklike sample.

摘要翻译： 高分辨率固体NMR光谱仪，可以测量盘状样品。 光谱仪包括：具有设置在静磁场内的空气轴承的定子，转子设置在定子中; 以及安装在转子的一端部并且可拆卸地保持保持盘状样本的样品保持器的接合机构。

公开(公告)号：US20150070014A1

公开(公告)日：2015-03-12

申请号：US14483795

申请日：2014-09-11

申请人： Stephan Biber ,  Jan Bollenbeck ,  Markus Vester ,  JianMin Wang

发明人： Stephan Biber ,  Jan Bollenbeck ,  Markus Vester ,  JianMin Wang

IPC分类号： G01R33/341 ,  G01R33/54 ,  G01R33/36 ,  G01R33/385

CPC分类号： G01R33/341 ,  G01R33/3415 ,  G01R33/3621 ,  G01R33/3664 ,  G01R33/3852 ,  G01R33/54

摘要： A method and an apparatus for a magnetic resonance imaging system are provided. A type of further processing of signals transmitted by a local coil to a magnetic resonance imaging (MRI) system is determined in dependence on information received in or from the local coil about a local-coil type of the local coil.

摘要翻译： 提供了一种用于磁共振成像系统的方法和装置。 根据本地线圈关于局部线圈类型的本地线圈接收的信息来确定由局部线圈传输到磁共振成像（MRI）系统的信号的进一步处理的类型。

公开(公告)号：US20140253119A1

公开(公告)日：2014-09-11

申请号：US14286382

申请日：2014-05-23

申请人： Vista Clara Inc.

发明人： DAVID O. WALSH

IPC分类号： G01R33/46 ,  G01R33/341

CPC分类号： G01R33/341 ,  G01N24/081 ,  G01R33/285 ,  G01R33/36 ,  G01R33/3664 ,  G01R33/3808 ,  G01R33/5659 ,  G01V3/32 ,  G01V3/38

摘要： Technologies applicable to noise canceling in-situ NMR detection and imaging are disclosed. An example noise canceling in-situ NMR detection apparatus may comprise one or more of a static magnetic field generator, an alternating magnetic field generator, an in-situ NMR detection device, an auxiliary noise detection device, and a computer.

摘要翻译： 公开了适用于噪声消除原位NMR检测和成像技术。 示例性降噪原位NMR检测装置可以包括静态磁场发生器，交变磁场发生器，原位NMR检测装置，辅助噪声检测装置和计算机中的一个或多个。

公开(公告)号：US08704519B2

公开(公告)日：2014-04-22

申请号：US12690422

申请日：2010-01-20

申请人： Stephan Biber

发明人： Stephan Biber

IPC分类号： G01R33/341

CPC分类号： G01R33/341 ,  A61B5/064

摘要： A magnetic resonance tomography device has a local coil that is fashioned to receive a magnetic resonance signal. This device has a detector system that is fashioned to detect a position of the local coil on the basis of electromagnetic waves that are affected by the position of the local coil and can be differentiated from the magnetic resonance signal. A method to detect a position of a local coil in a magnetic resonance tomography device Is implemented in this manner as well.

摘要翻译： 磁共振断层摄影装置具有被形成为接收磁共振信号的局部线圈。 该装置具有检测器系统，该检测器系统根据受局部线圈的位置影响的电磁波来检测局部线圈的位置，并可与磁共振信号区分开。 以这种方式实现了在磁共振断层摄影装置中检测局部线圈的位置的方法。

公开(公告)号：US20140077813A1

公开(公告)日：2014-03-20

申请号：US13619110

申请日：2012-09-14

申请人： James Hartman Holmes ,  Philip James Beatty

发明人： James Hartman Holmes ,  Philip James Beatty

IPC分类号： G01R33/341 ,  G06K9/00

CPC分类号： G01R33/5602 ,  G01R33/4824 ,  G01R33/56509

摘要： In an embodiment, a method includes processing magnetic resonance (MR) data according to a process including applying a density filter to blades of k-space data rotated about a section of k-space. Each blade may include a first set of encode lines weighted in a first signal weighting and a second set of encode lines weighted in a second signal weighting. The density filter may be configured to preferentially weight each blade in the first signal weighting to produce blades of weighted k-space data.

摘要翻译： 在一个实施例中，一种方法包括根据一个过程来处理磁共振（MR）数据，所述过程包括将密度滤波器应用到围绕k空间的一部分旋转的k空间数据的叶片。 每个刀片可以包括在第一信号加权中加权的第一组编码线和在第二信号加权中加权的第二组编码线。 密度滤波器可以被配置为在第一信号加权中优先权重每个叶片以产生加权的k空间数据的叶片。

公开(公告)号：US20140062476A1

公开(公告)日：2014-03-06

申请号：US13705582

申请日：2012-12-05

申请人： Mitsue MIYAZAKI ,  Cheng Ouyang ,  Xiangzhi Zhou

发明人： Mitsue MIYAZAKI ,  Cheng Ouyang ,  Xiangzhi Zhou

IPC分类号： G01R33/54 ,  G01R33/341

CPC分类号： G01R33/54 ,  G01R33/341 ,  G01R33/50 ,  G01R33/5605

摘要： A magnetic resonance imaging (MRI) system and method (a) acquires k-space data for a patient ROI over a predetermined band of RF frequencies using RF excitation pulses having respectively corresponding RF frequencies incrementally offset from a nuclear magnetic resonant (NMR) Larmor frequency for free nuclei over a predetermined range of different offset frequencies in which target macromolecule responses are expected and to process such acquired data into spectral data for voxels in the ROI; (b) analyzes the acquired spectral data to provide spectral peak width data corresponding to tissue values in the ROI for macromolecules participating in magnetization transfer contrast (MTC) effects producing said spectral data; and (c) stores and/or displays data representative of tissue values of the ROI which values are different for different tissues.

摘要翻译： 磁共振成像（MRI）系统和方法（a）使用具有逐渐偏离核磁共振（NMR）拉莫尔频率的分别对应的RF频率的RF激励脉冲获取在RF频率的预定频带上的患者ROI的k空间数据 在预期目标大分子响应的不同偏移频率的预定范围内的自由核，并将这些获取的数据处理成ROI中的体素的光谱数据; （b）分析所获得的光谱数据，以提供对应于参与产生所述光谱数据的磁化转移对比（MTC）效应的大分子的ROI中的组织值的光谱峰宽数据; 和（c）存储和/或显示表示不同组织的值不同的ROI的组织值的数据。