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1. 发明申请

WO2017125593A1 MAGNETIC RESONANCE IMAGING METHOD, PARTICULARLY FOR DETECTING NEURONAL ACTIVITY IN A SUBJECT'S BRAIN 审中-公开
标题翻译：磁共振成像方法，特别用于检测受试者脑中的神经元活动
公开(公告)号：WO2017125593A1
公开(公告)日：2017-07-27
申请号：PCT/EP2017/051256
申请日：2017-01-20
申请人： UNIVERSITÄT BERN
发明人： KIEFER, Klaus
IPC分类号： G01R33/48 , G01R33/56 , G01R33/561 , G01R33/565 , A61B5/055
CPC分类号： G01R33/4806 , A61B5/0042 , A61B5/055 , A61B5/4064 , G01R33/5602 , G01R33/5616 , G01R33/5659
摘要： A magnetic resonance (MR) imaging method for detecting neuronal activity in a subject's brain comprises performing a first MR imaging sequence part a) comprising a preparatory spin-locking pulse sequence part followed by an acquisition pulse sequence part, followed by a second MR imaging sequence part b) comprising the same acquisition pulse sequence part, whereafter steps a) and b) are repeated for a predetermined number of instances, each time using a different initial spin-lock phase. In order to detect neuronal activity in a subject's brain the MR imaging method is carried out with the subject's brain positioned in the MR imaging system; difference MR data are obtained by subtracting said second MR data from said first MR data, wherein zones of comparatively high brightness are indicative of fast oscillating neuronal currents.
摘要翻译：一种用于检测对象大脑中的神经元活动的磁共振（MR）成像方法，包括：执行第一MR成像序列部分a），所述第一MR成像序列部分a）包括预备自旋锁定脉冲序列部分，随后是采集脉冲序列部分，随后是包括相同的采集脉冲序列部分的第二MR成像序列部分b），此后，对于预定数量的实例重复步骤a）和b），每次使用不同的初始自旋锁相位。为了检测受试者大脑中的神经元活动，MR成像方法是在受试者的大脑位于MR成像系统中的情况下进行的; 通过从所述第一MR数据中减去所述第二MR数据来获得差异MR数据，其中相对高亮度的区域指示快速振荡的神经元电流。

2. 发明申请

WO2016109234A1 METHOD AND APPARATUS FOR USING B1 MAP TO CORRECT INTENSITY OF MAGNETIC RESONANCE IMAGES 审中-公开
标题翻译：使用B1 MAP校正磁共振图像强度的方法和装置
公开(公告)号：WO2016109234A1
公开(公告)日：2016-07-07
申请号：PCT/US2015/066407
申请日：2015-12-17
申请人： GENERAL ELECTRIC COMPANY
发明人： GUI, Dawei , ZHAO, Xiaoli , ZHANG, Zhenghui , SHEN, Hao , GARNIER, Stephen
IPC分类号： G01R33/20 , G01R33/32 , G01R33/38
CPC分类号： G01R33/5659 , G01R33/246
摘要： A controller that is operatively connected with a magnet assembly, which defines a target volume; and an image processor, which is configured to obtain calibration data from the controller; map B1 transmit intensity from the magnet assembly to the target volume, based on the calibration data; calculate a B1 transmit shading correction based at least on the map of B1 transmit intensity and on pulse sequence parameters; obtain k-space data of an imaging subject within the target volume from the controller operating the magnet assembly based on the pulse sequence parameters; develop an MR image from the k-space data; and apply the B1 transmit shading correction to the MR image.
摘要翻译：控制器，其与限定目标体积的磁体组件可操作地连接; 以及图像处理器，被配置为从所述控制器获取校准数据; 基于校准数据将B1发射强度从磁体组件到目标体积; 至少基于B1发送强度和脉冲序列参数的映射计算B1发送阴影校正; 基于所述脉冲序列参数从所述控制器操作所述磁体组件获得所述目标体积内的成像对象的k空间数据; 从k空间数据开发MR图像; 并将B1发送阴影校正应用于MR图像。

3. 发明申请

WO2016041715A1 METHOD OF GENERATING MULTI-BAND RF PULSES 审中-公开
标题翻译：产生多波束RF脉冲的方法
公开(公告)号：WO2016041715A1
公开(公告)日：2016-03-24
申请号：PCT/EP2015/068812
申请日：2015-08-17
申请人： KONINKLIJKE PHILIPS N.V.
发明人： XIE, Bin , NISTI GRIGOLETTO BORGONOVI, Arthur Felipe , CHEN, Zhaolin , FUDERER, Miha
IPC分类号： G01R33/483 , G01R33/54 , G01R33/565
CPC分类号： G01R33/4816 , G01R33/483 , G01R33/4835 , G01R33/54 , G01R33/543 , G01R33/561 , G01R33/565 , G01R33/5659
摘要： The present invention relates to a method for side-band suppression in a Magnetic Resonance imaging, MRI, system (100), the method comprising providing a first multiband RF pulse for simultaneously exciting at least two slices in a subject (118) at a first and a second frequency band (301,303) and to acquire using the MRI system (100) signals (307, 308) from the excited two slices and at least one additional signal (309) at a third frequency band (305), the additional signal (309) resulting from a sideband excitation of a slice different from the two slices; using the first multiband RF pulse for determining the additional signal (309); deriving a pre-compensating term from the first multiband RF pulse and the additional signal (309), adding the pre-compensating term to the first multiband RF pulse to obtain a second multiband RF pulse, thereby replacing the first multiband RF pulse by the second multiband RF pulse for suppressing at least part of the additional signal (309).
摘要翻译：本发明涉及一种用于磁共振成像，MRI，系统（100）中的侧带抑制的方法，所述方法包括提供第一多频带RF脉冲，用于在第一个对象（118）中同时激发对象（118）中的至少两个切片和第二频带（301,303），并且使用所述激励的两个片段的所述MRI系统（100）信号（307,308）以及在第三频带（305）处的至少一个附加信号（309）来获取附加信号（309），其由与所述两个切片不同的切片的边带激发产生; 使用所述第一多频带RF脉冲来确定所述附加信号（309）; 从第一多频带RF脉冲和附加信号（309）导出预补偿项，将预补偿项添加到第一多频带RF脉冲以获得第二多频带RF脉冲，由此将第二多频带RF脉冲替换为第二多频带RF脉冲用于抑制至少部分附加信号的多频带RF脉冲（309）。

4. 发明申请

WO2016035948A1 유전 구조체를 포함하는 RF 코일부 및 이를 포함하는 자기공명영상 시스템 审中-公开
标题翻译：包含电介质结构的RF线圈单元和包含其的磁共振成像系统
公开(公告)号：WO2016035948A1
公开(公告)日：2016-03-10
申请号：PCT/KR2015/000614
申请日：2015-01-21
申请人： 삼성전자 주식회사
发明人： 김경남
IPC分类号： G01R33/34 , A61B5/055
CPC分类号： G01R33/34046 , A61B5/055 , G01R33/34076 , G01R33/5659
摘要： RF 코일부 및 이를 포함하는 자기공명영상 시스템이 개시된다. 개시된 RF 코일부는 RF 코일 요소들이 형성된 베이스와 상기 베이스 내부에 형성된 유전 구조체를 포함할 수 있다. 상기 유전 구조체는 다수의 유전 구조부를 포함할 수 있으며, 상기 유전 구조부들은 체결부에 의해 연결될 수 있다. 상기 유전 구조체는 내부에 피검체가 위치할 수 있는 내부 공간을 포함할 수 있다. 상기 유전 구조체는 고유전 물질로 형성될 수 있다.
摘要翻译：公开了一种RF线圈单元和包括该RF线圈单元的磁共振成像系统。所公开的RF线圈单元可以包括：形成RF线圈部件的基座; 以及形成在基底内的电介质结构。电介质结构可以包括可以通过耦合单元连接的多个电介质结构部件。电介质结构可以包括可以定位被摄体的内部空间。电介质结构可以由高电介质材料形成。

5. 发明申请

WO2016014684A1 SURFACE COIL SENSITIVITY CORRECTION USING MAGNETIC RESONANCE DATA SIMULTANEOUSLY RECEIVED BY THE SURFACE COIL AND A BODY COIL 审中-公开
标题翻译：使用磁性共振数据同时由表面线圈和身体线圈接收的表面线圈灵敏度校正
公开(公告)号：WO2016014684A1
公开(公告)日：2016-01-28
申请号：PCT/US2015/041568
申请日：2015-07-22
申请人： GE MEDICAL SYSTEMS GLOBAL TECHNOLOGY COMPANY
发明人： BEKKU, Mitsuhiro , SUWA, Yuko , KOHARA, Munetsugu , OZAKI, Masanori
IPC分类号： G01R33/565
CPC分类号： G01R33/5659 , G01R33/341 , G01R33/5608
摘要： For the purpose of effectively suppressing shading generated in an image due to Bl inhomogeneity of a surface coil, there are perfonned: an acquiring step of acquiring magnetic resonance signals simultaneously received at a body coil and a surface coil; a filtering step of applying image-based filtering for suppressing shading due to B 1 inhomogeneity to a first image according to received signals from the body coil; a calculating step of calculating a sensitivity of the surface coil based on the image-based-filtered first image and a second image according to received signals from the surface coil; and a correcting step of correcting sensitivity unevenness in the second image using the sensitivity.
摘要翻译：为了有效地抑制由于表面线圈的B1不均匀性而导致的图像中产生的阴影，实现了采集步骤：获取在体线圈和表面线圈同时接收的磁共振信号; 滤波步骤，根据来自所述体线圈的接收信号，将基于B 1不均匀性的阴影的图像滤波应用于第一图像; 计算步骤，根据来自所述表面线圈的接收信号，基于所述基于图像的滤波的第一图像和第二图像来计算所述表面线圈的灵敏度; 以及使用灵敏度校正第二图像中的灵敏度不均匀性的校正步骤。

6. 发明申请

WO2015190508A1 磁気共鳴イメージング装置及び水脂肪分離画像作成方法审中-公开
标题翻译：磁共振成像装置及其创建水分离图像的方法
公开(公告)号：WO2015190508A1
公开(公告)日：2015-12-17
申请号：PCT/JP2015/066694
申请日：2015-06-10
申请人：株式会社日立メディコ
发明人：中井　則正
IPC分类号： A61B5/055 , G01R33/48
CPC分类号： G01R33/561 , A61B5/055 , A61B5/7257 , A61B5/742 , A61B2576/00 , G01R33/4828 , G01R33/56554 , G01R33/5659
摘要：　脂肪の定量評価ができる画像を取得することのできる磁気共鳴イメージング装置及び水脂肪分離画像作成方を提供するために、同じエコー時間にて正極の周波数エンコード傾斜磁場印加中にエコー信号と、負極における周波数エンコード傾斜磁場印加中にエコー信号を取得し、これらの一対の補正用エコー信号から受信周波数特性の影響を補正するための補正量を求め、この補正量を用いて、周波数エンコード傾斜磁場の極性を反転して取得した正極及び負極の画像の受信周波数特性の影響を取り除く。
摘要翻译：本发明提供一种磁共振成像装置，其能够获取能够进行脂肪的定量评价的图像; 以及用于产生水分离图像的方法。为此，在将频率编码梯度磁场施加到正电极期间发生的回波信号和在将频率编码梯度磁场施加到负电极期间发生的回波信号在同一时间期间获得回波时间，用于校正接收频率特性的影响的校正量由用于校正上述一对回波信号的回波信号确定，并且校正量用于反转频率编码梯度磁场的极性并且去除对正极和负极的获取图像的接收频率特性的影响。

7. 发明申请

WO2015150236A1 MAGNETIC RESONANCE IMAGING WITH RF NOISE DETECTION COILS 审中-公开
标题翻译：具有射频噪声检测线圈的磁共振成像
公开(公告)号：WO2015150236A1
公开(公告)日：2015-10-08
申请号：PCT/EP2015/056618
申请日：2015-03-26
申请人： KONINKLIJKE PHILIPS N.V.
发明人： HARVEY, Paul Royston , DUIJVESTIJN, Michael Jozef , LORENC, Steve
IPC分类号： G01R33/36 , G01R33/565 , G01R33/422
CPC分类号： G01R33/5659 , G01R33/36 , G01R33/3607 , G01R33/422 , G01R33/583
摘要： The invention provides for a magnetic resonance imaging system (100) for acquiring magnetic resonance data (142, 144) from an imaging zone (108). Execution of the instructions causes a processor (133) controlling the MRI system to: acquire (200) imaging magnetic resonance data (142) with radio frequency excitation of the radio frequency system enabled; acquire (202) noise radio frequency data (148) using at least one RF noise detection coil, wherein the noise radio frequency data is acquired simultaneously with the imaging magnetic resonance data; acquire (204) calibration magnetic resonance data (144) with radio frequency excitation of the radio frequency system disabled; acquire (206) reference radio frequency data (146) using the at least one RF noise detection coil, wherein the reference radio frequency data is acquired simultaneously with the calibration magnetic resonance data; and calculate (208) a noise calibration (150) using the reference radio frequency data and the calibration magnetic resonance data.
摘要翻译：本发明提供一种用于从成像区域（108）获取磁共振数据（142,144）的磁共振成像系统（100）。所述指令的执行使得控制所述MRI系统的处理器（133）利用所述无线电频率系统的射频激励获取（200）成像磁共振数据（200）; 使用至少一个RF噪声检测线圈获取（202）噪声射频数据（148），其中与成像磁共振数据同时获取噪声射频数据; 利用无线电频率系统的射频激励来取得（204）校准磁共振数据（144）; 使用所述至少一个RF噪声检测线圈获取（206）参考射频数据（146），其中所述参考射频数据与所述校准磁共振数据同时获取; 并使用参考射频数据和校准磁共振数据计算（208）噪声校准（150）。

8. 发明申请

WO2015043612A1 A TRANSMIT/RECEIVE SWITCH, A TRANSMIT COIL ARRAY AND A RECEIVE COIL ARRAY FOR MRI 审中-公开
标题翻译：发射/接收开关，发射线圈阵列和接收线圈阵列
公开(公告)号：WO2015043612A1
公开(公告)日：2015-04-02
申请号：PCT/EP2013/002877
申请日：2013-09-25
申请人： MAX-PLANCK-GESELLSCHAFT ZUR FÖRDERUNG DER WISSENSCHAFTEN E. V.
发明人： GUNAMONY, Shajan , HOFFMANN, Jens , SCHEFFLER, Klaus , POHMANN, Rolf
IPC分类号： G01R33/3415 , G01R33/36 , G01R33/34 , G01R33/565
CPC分类号： G01R33/3614 , G01R33/283 , G01R33/34007 , G01R33/3415 , G01R33/3657 , G01R33/5659
摘要： The invention relates to an MRI apparatus for magnetic resonance imaging of a subject of investigation, comprising: a coil arrangement (1) for transmitting an excitation signal into the subject and for receiving a response signal from the subject; a high-power radio-frequency amplifier (4) for generating the excitation signal; and a low-noise amplifier (LNA) for amplifying the response signal. The invention provides a transmit/receive switch (5) which is alternatively operable in a transmit mode or in a receive mode. In the transmit mode, the transmit/receive switch (5) transmits the excitation signal to the coil arrangement (1) and protects the low-noise amplifier (LNA) from the outgoing excitation signal. In the receive mode, the transmit/receive switch (5) routes the incoming response signal to the low-noise amplifier (LNA).
摘要翻译：本发明涉及一种用于调查对象的磁共振成像的MRI装置，包括：线圈装置（1），用于将激励信号发送到所述对象中并用于从所述对象接收响应信号; 用于产生激励信号的高功率射频放大器（4）; 以及用于放大响应信号的低噪声放大器（LNA）。本发明提供一种发射/接收开关（5），其可以在发射模式或接收模式下可操作。在发送模式中，发送/接收开关（5）将激励信号发送到线圈装置（1），并且保护低噪声放大器（LNA）免受输出激励信号的影响。在接收模式下，发送/接收开关（5）将输入的响应信号路由到低噪声放大器（LNA）。

9. 发明申请

WO2014064573A1 RADIO FREQUENCY (RF) BIRDCAGE COIL WITH SEPARATELY CONTROLLED RING MEMBERS AND RUNGS FOR USE IN A MAGNETIC RESONANCE (MR) IMAGING SYSTEM 审中-公开
标题翻译：无线电频率（RF）双线圈，具有独立控制的环形成员和用于磁共振（MR）成像系统的运行
公开(公告)号：WO2014064573A1
公开(公告)日：2014-05-01
申请号：PCT/IB2013/059335
申请日：2013-10-14
申请人： KONINKLIJKE PHILIPS N.V. , PHILIPS DEUTSCHLAND GMBH
发明人： LEUSSLER, Christoph , WUELBERN, Jan, Hendrik
IPC分类号： G01R33/34 , G01R33/36
CPC分类号： G01R33/34076 , G01R33/3614 , G01R33/3628 , G01R33/365 , G01R33/5659 , H01Q7/00
摘要： A radio frequency (RF) antenna device (40) for applying an RF field to an examination space (16) of a magnetic resonance (MR) imaging system (10), the RF antenna device (40) comprising a plurality of rungs (42, 44) arranged substantially parallel and in an azimuthally substantially equally spaced relationship along an outside of a virtual cylinder (50) with a cylinder axis (52) running parallel to main directions of extension (48); at least one transversal antenna member (54) electromagnetically coupled to at least one rung (42, 44) of the plurality of rungs (42, 44), wherein the at least one transversal antenna member (54) is arranged within a plane substantially perpendicular to the main directions of extension (48) of the plurality of rungs (42, 44); and a plurality of RF circuitries (62, 64, 66), wherein at least one RF circuitry (62, 64, 66) is provided for each rung (42, 44) of the plurality of rungs (42, 44) for mutual decoupling and for individually feeding RF power into and for the at least one transversal antenna member (54) for individually feeding RF power into.
摘要翻译：一种用于将RF场施加到磁共振（MR）成像系统（10）的检查空间（16）的射频（RF）天线装置（40），所述RF天线装置（40）包括多个梯级，44）基本上平行并且沿着具有平行于延伸部（48）的主方向延伸的气缸轴线（52））的虚拟气缸（50）的外侧以方位角基本上等间隔的关系布置; 至少一个横向天线构件（54），其电磁耦合到所述多个梯级（42,44）中的至少一个梯级（42,44），其中所述至少一个横向天线构件（54）布置在基本垂直的平面到所述多个梯级（42,44）的延伸部（48）的主要方向上。以及多个RF电路（62,64,66），其中为所述多个梯级（42,44）中的每个梯级（42,44）提供至少一个RF电路（62,64,66），用于相互解耦并且用于将射频功率单独馈送到所述至少一个横向天线构件（54）中以用于单独地馈送RF功率。

10. 发明申请

WO2014024085A3 MULTIPLE SHOT MAGNETIC RESONANCE IMAGING WITH GHOSTING STABILITY CORRECTION 审中-公开
标题翻译：具有恶化稳定性校正的多次射电磁共振成像
公开(公告)号：WO2014024085A3
公开(公告)日：2014-04-03
申请号：PCT/IB2013056189
申请日：2013-07-29
申请人： KONINKL PHILIPS NV
发明人： FOXALL DAVID LESLIE
IPC分类号： G01R33/565 , G01R33/48
CPC分类号： G01R33/4806 , G01R33/4818 , G01R33/561 , G01R33/56554 , G01R33/5659
摘要： An image dataset comprises multiple shots of imaging data acquired using a magnetic resonance imaging (MRI) scanner (10). The signal power of each shot of the image dataset is normalized (24) to a reference signal power to generate a power normalized shot representation having total signal power matching the reference signal power. A reconstructed image is generated (26) from the power normalized shot representations. Odd/even phase correction (22) may also be performed on the image dataset. The phase correction, normalizing, and generating operations are suitably performed by an electronic data processing device (20).
摘要翻译：图像数据集包括使用磁共振成像（MRI）扫描器（10）获取的成像数据的多次拍摄。图像数据集的每个镜头的信号功率被归一化（24）到参考信号功率，以产生具有与参考信号功率匹配的总信号功率的功率归一化镜头表示。从功率归一化镜头表示生成（26）重建图像。奇数/偶数相位校正（22）也可以在图像数据集上执行。相位校正，归一化和生成操作由电子数据处理装置（20）适当地执行。

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