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21. 发明申请

WO2012102338A1 磁気共鳴イメージング装置及びそれを用いた血管撮像方法审中-公开
标题翻译：磁共振成像装置和使用其的血管成像方法
公开(公告)号：WO2012102338A1
公开(公告)日：2012-08-02
申请号：PCT/JP2012/051653
申请日：2012-01-26
申请人：株式会社日立メディコ , 吉澤延之 , 黒川眞次
发明人：吉澤　延之 , 黒川　眞次
IPC分类号： A61B5/055 , G01R33/48
CPC分类号： G01R33/54 , G01R33/4822 , G01R33/4826 , G01R33/543 , G01R33/5617 , G01R33/5635 , G01R33/5673
摘要：　非造影３Ｄ血管撮像において、心周期の変動により生じる画質劣化や血流方向に依存する画質劣化を防止し、診断に役立つ良好な画質のＭＲＡ画像を提供する。　撮像シーケンスとして、三次元ｋ空間データを円形又は楕円形にサンプリングするマルチエコー系のパルスシーケンスを採用すると共に、体動情報に基づく同期撮像を行う。撮像中、心拍数をモニタリングし、心周期に応じて決定された同期信号からの遅延時間ＤＴやデータ収集時間ＡＴを計算し、これら撮像パラメータに応じて、円形サンプリングのサンプリング軌跡やエコートレイン数を制御する。
摘要翻译：提供了一种磁共振成像装置和使用该磁共振成像装置的血管成像装置，其在不对比3D血管成像中防止了心脏周期波动引起的图像劣化和取决于血流方向的图像劣化，并且MRA图像具有良好的提供了有用的诊断图像质量。采用圆形或椭圆形三维K空间数据采样的多回波脉冲序列作为成像序列，并根据人体运动信息进行同步成像。在成像期间，监视脉率，根据心动周期确定的同步信号计算延迟时间（DT）和数据累加时间（AT）。根据这些成像参数，循环采样中的回波序列号和采样轨迹被控制。

22. 发明申请

WO2011128847A1 METHOD AND APPARATUS FOR COMPENSATING FOR B1 INHOMOGENEITY IN MAGNETIC RESONANCE IMAGING BY NONSELECTIVE TAILORED RF PULSES 审中-公开
标题翻译：通过非选择性定制RF脉冲对磁共振成像中的B1不均匀性进行补偿的方法和装置
公开(公告)号：WO2011128847A1
公开(公告)日：2011-10-20
申请号：PCT/IB2011/051581
申请日：2011-04-12
申请人： COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES , AMADON, Alexis , CLOOS, Martijn
发明人： AMADON, Alexis , CLOOS, Martijn
IPC分类号： G01R33/483 , G01R33/58
CPC分类号： G01R33/4836 , G01N24/08 , G01R33/246 , G01R33/34046 , G01R33/44 , G01R33/4818 , G01R33/4822 , G01R33/4833 , G01R33/5659 , G01R33/586
摘要： A method of exciting nuclear spins in a body, the method comprising the steps of: (a) immerging said body (PB) in a static magnetic field (B 0 ) for aligning nuclear spins along a magnetization axis (z), said static magnetic field being substantially uniform over at least a volume of interest (VOI) of said body; (b) exposing said body, or at least said volume of interest, to a time-varying magnetic field gradient having components (G x , G y , G z ) directed along at least three non-coplanar directions (x, y, z) and to a transverse radio- frequency field (B 1 ), whereby said time-varying magnetic field gradient defines a three-dimensional trajectory in k-space constituted by segments linking discrete points (k T 1 - k T 9 ), and said transverse radio-frequency field deposits radio- frequency energy along at least part of said trajectory for flipping said nuclear spins by a same predetermined flip angle, independently from their position within said volume of interest. A method of performing magnetic resonance imaging comprising a step of exciting nuclear spins in a body to be imaged, characterized in that said step is performed by carrying out a method. A magnetic resonance imaging scanner for carrying out such a method.
摘要翻译：一种在身体中激发核自旋的方法，所述方法包括以下步骤：（a）将所述体（PB）浸入静磁场（B0）中，用于沿着磁化轴（z）对准核自旋，所述静磁场在所述身体的至少一个感兴趣体积（VOI）上基本上均匀; （b）使所述身体或至少所述感兴趣的体积暴露于具有沿着至少三个非共面方向（x，y，z）指向的分量（Gx，Gy，Gz）的时变磁场梯度，并且横向射频场（B1），其中所述时变磁场梯度定义由链接离散点（kT 1-kT 9）和所述横向射频场沉积物的段构成的k空间中的三维轨迹沿着所述轨迹的至少一部分的射频能量，用于将所述核自旋翻转相同的预定翻转角，独立于所述感兴趣体积内的位置。一种执行磁共振成像的方法，包括激发待成像的身体中的核自旋的步骤，其特征在于，通过执行所述步骤来执行所述步骤。一种用于执行这种方法的磁共振成像扫描器。

23. 发明申请

WO2009047690A3 SEGMENTED MULTI-SHOT MRI INVOLVING MAGNETIZATION PREPARATION 审中-公开
标题翻译：涉及多种MRI技术涉及磁化准备
公开(公告)号：WO2009047690A3
公开(公告)日：2009-07-23
申请号：PCT/IB2008054081
申请日：2008-10-06
申请人： KONINKL PHILIPS ELECTRONICS NV , BECK GABRIELE M , DE BECKER JAN F L , JONES ALUN C R
发明人： BECK GABRIELE M , DE BECKER JAN F L , JONES ALUN C R
IPC分类号： G01R33/563 , G01R33/565
CPC分类号： G01R33/5601 , G01R33/4818 , G01R33/4822 , G01R33/4824 , G01R33/5602 , G01R33/5607 , G01R33/5615
摘要： The invention relates to a device for magnetic resonance imaging of at least a portion of a body placed in an examination volume. The device is arranged to perform the following successive steps: a) acquiring two or more differently phase-encoded MR signals (a, b, c, d) by subjecting the portion to a shot of an imaging pulse sequence comprising at least one RF pulse and switched magnetic field gradients; b) repeating step a) to scan k-space completely by applying a plurality of shots and by using a phase encoding scheme, according to which k-space is divided into at least two segments (17, 18, 19, 20), each segment (17, 18, 19, 20) being further divided into sub-segments, wherein MR signals (a, b, c, d) are acquired from different sub-segments of a single segment during each shot, which sub- segments are successively arranged in k-space in the order of the temporal succession of the MR signals (a, b, c, d), and c) reconstructing an MR image from the acquired MR signals.
摘要翻译：本发明涉及一种用于对放置在检查体积中的身体的至少一部分进行磁共振成像的装置。该装置被布置成执行以下连续步骤：a）通过对部分进行包括至少一个RF脉冲的成像脉冲序列的镜头来获取两个或更多个不同相位编码的MR信号（a，b，c，d）并切换磁场梯度; b）重复步骤a）通过应用多个拍摄并通过使用相位编码方案来完全扫描k空间，根据该相位编码方案，k空间被划分为至少两个片段（17,18,19,20），每个片段（17,18,19,20）被进一步划分成子片段，其中MR信号（a，b，c，d）在每个镜头期间从单个片段的不同子片段获取，哪些子片段是按照MR信号（a，b，c，d）的时间依次顺序排列在k空间中，以及c）从所获取的MR信号重构MR图像。

24. 发明申请

WO2008041208A2 MAGNETIC RESONANCE DEVICE AND METHOD 审中-公开
标题翻译：磁共振装置及方法
公开(公告)号：WO2008041208A2
公开(公告)日：2008-04-10
申请号：PCT/IB2007/054111
申请日：2007-10-09
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , BECK, Gabriele, M. , DE BECKER, Jan, F., L. , JONES, Alun, C., R.
发明人： BECK, Gabriele, M. , DE BECKER, Jan, F., L. , JONES, Alun, C., R.
IPC分类号： G01R33/563 , G01R33/565
CPC分类号： G01R33/5607 , G01R33/4818 , G01R33/4822 , G01R33/4824 , G01R33/5601 , G01R33/5616 , G01R33/5617 , G01R33/5619 , G01R33/5635
摘要： The invention relates to a device for magnetic resonance imaging of at least a portion of a body placed in an examination volume. The device is arranged to perform the following successive steps: a) acquiring two or more differently phase-encoded MR signals (a, b, c, d) by subjecting the portion to a shot of an imaging pulse sequence comprising at least one RF pulse and switched magnetic field gradients; b) repeating step a) to scan k-space completely by applying a plurality of shots and by using a phase encoding scheme, according to which k-space is divided into at least two segments (17, 18, 19, 20), each segment (17, 18, 19, 20) being further divided into sub-segments, wherein MR signals (a, b, c, d) are acquired from different sub-segments of a single segment during each shot, which sub- segments are successively arranged in k-space in the order of the temporal succession of the MR signals (a, b, c, d), and c) reconstructing an MR image from the acquired MR signals.
摘要翻译：本发明涉及一种用于对放置在检查体积中的身体的至少一部分进行磁共振成像的装置。该装置被布置成执行以下连续步骤：a）通过对部分进行包括至少一个RF脉冲的成像脉冲序列的镜头来获取两个或更多个不同相位编码的MR信号（a，b，c，d）并切换磁场梯度; b）重复步骤a）通过应用多个拍摄并通过使用相位编码方案来完全扫描k空间，根据该相位编码方案，k空间被划分为至少两个片段（17,18,19,20），每个片段（17,18,19,20）被进一步划分成子片段，其中MR信号（a，b，c，d）在每个镜头期间从单个片段的不同子片段获取，哪些子片段是按照MR信号（a，b，c，d）的时间依次顺序排列在k空间中，以及c）从所获取的MR信号重构MR图像。

25. 发明申请

WO2006064582A1 磁気共鳴イメージング装置审中-公开
标题翻译：磁共振成像系统
公开(公告)号：WO2006064582A1
公开(公告)日：2006-06-22
申请号：PCT/JP2005/006152
申请日：2005-03-30
申请人：学校法人慶應義塾 , 押尾晃一
发明人：押尾晃一
IPC分类号： A61B5/055 , G01R33/567
CPC分类号： G01R33/5676 , G01R33/4822 , G01R33/4824 , G01R33/4835 , G01R33/5614 , G01R33/5635 , G01R33/56509 , G01R33/5673
摘要：　磁気共鳴イメージング装置は、静磁場中に置かれた被検体に対して高周波磁場を発生する高周波磁場発生部（８Ｔ）と、静磁場に重畳される傾斜磁場を発生する傾斜磁場発生部（４）と、被検体の体軸に略一致する軸を通る面に関するＭＲデータを被検体の心拍の特定期間内に収集するとともに、心拍ごとに面を体軸に略一致する軸を中心として回転するように、高周波磁場発生部及び傾斜磁場発生部を制御するシーケンサ（５）とを具備する。
摘要翻译：磁共振成像系统包括：高频磁场产生部分（8T），用于产生放置在静磁场中的受检者的高频磁场; 用于产生叠加在静磁场上的倾斜磁场的倾斜磁场产生部分（4）; 以及用于控制高频磁场产生部分和倾斜磁场产生部分的定序器（5），使得在指定时间段内收集关于通过基准上与被检体的轴线正交的轴线的平面的MR数据的受试者的心跳，并且平面在每个心跳处围绕基本上与身体的轴线对齐的轴线转动。

26. 发明申请

WO2016198362A1 MRI WITH VARIABLE DENSITY SAMPLING 审中-公开
标题翻译：具有可变密度采样的MRI
公开(公告)号：WO2016198362A1
公开(公告)日：2016-12-15
申请号：PCT/EP2016/062819
申请日：2016-06-07
申请人： KONINKLIJKE PHILIPS N.V.
发明人： ZHAO, Chenguang , HUANG, Feng , YANG, Ming
IPC分类号： G01R33/48 , G01R33/561
CPC分类号： G01R33/4826 , G01R33/4818 , G01R33/482 , G01R33/4822 , G01R33/4824 , G01R33/561
摘要： The invention provides a device for producing a magnetic resonance image. The device comprises a collecting unit adapted for collecting k space samples that are located on a non-Cartesian grid in a non-Cartesian coordinate space or non-uniformly located on a Cartesian grid in a Cartesian coordinate space, the non-Cartesian/Cartesian coordinate space adapted to be decomposed into a plurality of subspaces, each of which extends along one or more coordinate axes of the non-Cartesian/Cartesian coordinate space; a weight calculation unit (203) adapted for calculating a decomposed sample density weight function of the k space samples in each individual subspace and determining a density weight function in the non-Cartesian/Cartesian coordinate space via a multiplication of the decomposed sample density weight functions of the k space samples in the plurality of subspaces; a gridding unit adapted for interpolating the k space samples in the non-Cartesian/Cartesian coordinate space onto a uniform Cartesian grid in a k space based on the density weight function of the k space samples in the non-Cartesian/Cartesian coordinate space; and a reconstructing unit adapted for reconstructing the magnetic resonance image based on the interpolated k space samples. By means of the invention, fast, preferably on-demand, calculation of the sampling density weights may be achieved.
摘要翻译：本发明提供一种用于产生磁共振图像的装置。该装置包括收集单元，其适于收集位于非笛卡尔坐标空间中的非笛卡尔网格上的非空间样本，或非均匀地位于笛卡尔坐标空间中的笛卡尔网格上的非笛卡尔/笛卡尔坐标适于分解成多个子空间的空间，每个子空间沿着非笛卡尔/笛卡尔坐标空间的一个或多个坐标轴延伸; 权重计算单元（203），用于计算每个单独子空间中的k空间样本的分解样本密度权重函数，并且通过分解的样本密度权重函数的乘积来确定非笛卡尔/笛卡尔坐标空间中的密度权重函数的多个子空间中的k个空间样本; 网格单元，用于基于非笛卡尔/笛卡尔坐标空间中的k空间样本的密度权重函数，将非笛卡尔/笛卡尔坐标空间中的k个空间样本内插到k空间中的均匀笛卡尔网格上; 以及重建单元，其适于基于插值的k空间样本重建所述磁共振图像。通过本发明，可以实现快速，优选按需的采样密度权重的计算。

27. 发明申请

WO2016190701A1 MAGNETIC RESONANCE IMAGING APPARATUS AND METHOD 审中-公开
标题翻译：磁共振成像装置及方法
公开(公告)号：WO2016190701A1
公开(公告)日：2016-12-01
申请号：PCT/KR2016/005626
申请日：2016-05-27
申请人： SAMSUNG ELECTRONICS CO., LTD.
发明人： CHOI, Sang-cheon
IPC分类号： A61B5/055 , G01R33/20
CPC分类号： G01R33/4818 , G01R33/4822 , G01R33/4835 , G01R33/5611
摘要： Provided are an apparatus and method for sampling magnetic resonance (MR) signals received from each of a plurality of channel coils included in a radio frequency (RF) multi-coil such that intervals between two acquired signals that are adjacent in a first axis direction of a 3D K-space are non-uniform; and restoring an MR image by using the received MR signals.
摘要翻译：提供了一种用于从包括在射频（RF）多线圈中的多个通道线圈中的每一个接收的磁共振（MR）信号进行采样的装置和方法，使得在第一轴方向上相邻的两个获取信号之间的间隔 3D K空间是不均匀的; 以及通过使用所接收的MR信号来恢复MR图像。

28. 发明申请

WO2016174497A1 SYSTEM AND METHOD FOR IMAGE WARP CORRECTION FOR MAGNETIC RESONANCE IMAGING 审中-公开
标题翻译：用于磁共振成像的图像温度校正的系统和方法
公开(公告)号：WO2016174497A1
公开(公告)日：2016-11-03
申请号：PCT/IB2015/053059
申请日：2015-04-27
申请人： SYNAPTIVE MEDICAL (BARBADOS) INC. , PANTHER, Alexander Gyles , HARRIS, Chad Tyler , BEATTY, Phillip J.
发明人： PANTHER, Alexander Gyles , HARRIS, Chad Tyler , BEATTY, Phillip J.
IPC分类号： G01R33/565
CPC分类号： G01R33/56572 , G01R33/385 , G01R33/4818 , G01R33/4822
摘要： A method of correcting warping of an acquired image in an MRI system, caused by non- linearities in gradient field profiles of gradient coils is set forth, comprising a) constructing a computer model representing conducting pathways for each gradient coil in said MRI system; b) calculating a predicted magnetic field at each point in space for each said gradient coil in said model; c) measuring actual magnetic field at each point in space for each said gradient coil in said MRI system; d) verifying accuracy of said model by comparing said predicted magnetic field to said actual magnetic field at each said point in space and in the event said model is not accurate then repeating a) – d), and in the event said model is accurate then; constructing a distortion map for mapping coordinates in real space to coordinates in warped space of said acquired image based on deviations of said predicted magnetic field from linearity; and unwarping said warping of the acquired image using said distortion map.
摘要翻译：提出了一种校正由梯度线圈的梯度场分布中的非线性引起的MRI系统中获得的图像的翘曲的方法，包括：a）构建表示所述MRI系统中每个梯度线圈的导电路径的计算机模型; b）在所述模型中计算每个所述梯度线圈的每个空间点处的预测磁场; c）测量所述MRI系统中每个所述梯度线圈的每个空间点处的实际磁场; d）通过将所述预测磁场与空间中的每个所述点处的所述实际磁场进行比较并且在所述模型不准确然后重复a）至d）的情况下验证所述模型的精确度，并且在所述模型是准确的情况下 ; 根据所述预测磁场的偏离线性，构造用于将实空间中的坐标映射到所述获取图像的翘曲空间中的坐标的失真图; 并且使用所述失真图来不理想所获取的图像的所述翘曲。

29. 发明申请

WO2015172100A1 CARDIAC PHASE-RESOLVED NON-BREATH-HOLD 3-DIMENSIONAL MAGNETIC RESONANCE ANGIOGRAPHY 审中-公开
标题翻译： CARDIAC相解决方案非持续三维磁共振成像
公开(公告)号：WO2015172100A1
公开(公告)日：2015-11-12
申请号：PCT/US2015/030015
申请日：2015-05-08
申请人： THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
发明人： FINN, J. Paul , HU, Peng , HAN, Fei
IPC分类号： A61B5/055 , A61B5/0205 , A61B5/00
CPC分类号： A61B5/0263 , A61B5/0402 , A61B5/055 , A61B5/113 , A61B5/7285 , A61B2503/06 , A61K49/1818 , A61M5/007 , A61M16/0003 , A61M2016/0027 , G01R33/4822 , G01R33/5601 , G01R33/5616 , G01R33/56325 , G01R33/5635 , G01R33/5673
摘要： 3D cine MR angiography systems and methods are disclosed for use during the steady state intravascular distribution phase of ferumoxytol. The 3D cine MRA technique enables improved delineation of cardiac anatomy in pediatric patients undergoing cardiovascular MRI.
摘要翻译：公开了3D电影MR血管造影系统和方法，用于在ferumoxytol的稳态血管内分布期间使用。 3D电影MRA技术可以改善患有心血管MRI的儿科患者的心脏解剖结构。

30. 发明申请

WO2015138941A1 SYSTEM AND METHOD FOR MAGNETIC RESONANCE FINGERPRINTING 审中-公开
标题翻译：用于磁共振指纹的系统和方法
公开(公告)号：WO2015138941A1
公开(公告)日：2015-09-17
申请号：PCT/US2015/020511
申请日：2015-03-13
申请人： THE GENERAL HOSPITAL CORPORATION
发明人： ROSEN, Matthew, S. , SARRACANIE, Mathieu , ARMSTRONG, Brandon
IPC分类号： G01R33/50 , G01R33/56 , G01R33/563 , G01R33/48
CPC分类号： G01R33/50 , G01R33/243 , G01R33/445 , G01R33/4804 , G01R33/4822 , G01R33/4824 , G01R33/4826
摘要： A system and method for generating a report about a subject positioned within a bore of a magnetic resonance imaging (MRI) system includes controlling the MRI system to perform a magnetic resonance fingerprinting (MRF) pulse sequence that at least partially samples k-space using either fractional Cartesian or non-Cartesian sequential sampling pattern to acquire imaging data from the subject. The process also includes estimating quantitative parameters by comparing the acquired imaging data with at least one database comprising a plurality signal templates.
摘要翻译：用于产生关于位于磁共振成像（MRI）系统的孔内的对象的报告的系统和方法包括控制MRI系统以执行磁共振指纹（MRF）脉冲序列，其使用以下任一方法至少部分地采样k空间分数笛卡尔或非笛卡尔顺序采样模式，以从主体获取成像数据。该过程还包括通过将所获取的成像数据与包括多个信号模板的至少一个数据库进行比较来估计定量参数。

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