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1. 发明授权

EP3765863B1 EMULATION MODE FOR MRI 有权
公开(公告)号：EP3765863B1
公开(公告)日：2024-05-29
申请号：EP19709496.4
申请日：2019-03-11
IPC分类号： G01R33/54 , G01R33/56 , A61B5/055 , G01R33/50 , G01R33/24 , G01R33/44 , G01R33/48 , G01R33/483 , G01R33/485 , A61N5/10
CPC分类号： G01R33/243 , G01R33/246 , G01R33/443 , G01R33/4828 , G01R33/4838 , G01R33/485 , G01R33/50 , G01R33/543 , G01R33/546 , G01R33/5608 , A61B5/055 , A61N5/1039 , A61N2005/100520130101

2. 发明公开

EP3403577A1 MAGNETIC RESONANCE IMAGING APPARATUS AND METHOD FOR SHIMMING OF MAGNETIC RESONANCE IMAGING APPARATUS 审中-公开
公开(公告)号：EP3403577A1
公开(公告)日：2018-11-21
申请号：EP16886614.3
申请日：2016-09-27
申请人： Samsung Electronics Co., Ltd.
发明人： HWANG, Jin-young
IPC分类号： A61B5/055 , A61B5/00 , G01R33/32
CPC分类号： A61B5/00 , A61B5/055 , G01R33/243 , G01R33/3875 , G01R33/4828
摘要： Provided is a shimming method performed by a magnetic resonance imaging (MRI) apparatus, the shimming method including applying a magnetic field and a high frequency to an object through a bore of the MRI apparatus including at least one magnet and an RF coil and obtaining a static magnetic field map corresponding to the magnetic field formed in the bore; performing shimming using a plurality of shim channels based on the static magnetic field map; receiving a free induction decay (FID) signal from the RF coil; and determining a state of the magnetic field based on the FID signal and controlling whether to stop shimming based on the determined state.

3. 发明授权

EP3295194B1 PARALLEL MR IMAGING WITH RF COIL SENSITIVITY MAPPING 有权
公开(公告)号：EP3295194B1
公开(公告)日：2018-09-19
申请号：EP16718716.0
申请日：2016-04-28
申请人： Koninklijke Philips N.V.
发明人： NEHRKE, Kay , BOERNERT, Peter
IPC分类号： G01R33/24 , G01R33/561
CPC分类号： G01R33/5611 , G01R33/243 , G01R33/246 , G01R33/5608 , G01R33/5612
摘要： The invention relates to a method of MR imaging of an object (10). The problem of the invention is to provide an improved MR imaging technique that enables fast and robust determination of spatial sensitivity profiles of RF receiving antennas (11, 12, 13) used in parallel imaging as well as B1 and/or B0 mapping. The method of the invention comprises subjecting the object (10) to a stimulated echo sequence. Two or more stimulated echo signals (STE, STE*) are acquired, namely a direct stimulated echo signal (STE) and a conjugated stimulated echo signal (STE*), wherein at least one of the stimulated echo signals (STE, STE*) is received in parallel via an array of two or more RF receiving antennas (11, 12, 13) having different spatial sensitivity profiles, and wherein at least another one of the stimulated echo signals (STE, STE*)is received via a body RF coil (9) having an essentially homogeneous spatial sensitivity profile. Sensitivity maps indicating the spatial sensitivity profiles of the individual RF receiving antennas (11, 12, 13) of the array are derived by comparing the stimulated echo signals (STE, STE*) received via the array of RF receiving antennas (11, 12, 13) with the stimulated echo signals (STE, STE*) received via the body RF coil (9). Moreover, the invention relates to a MR device (1) and to a computer program for a MR device (1).

4. 发明公开

EP3313273A1 SYSTEM AND METHOD FOR LOCALIZED PROCESSING OF QUANTITATIVE SUSCEPTIBILITY MAPS IN MAGNETIC RESONANCE IMAGING 审中-公开
标题翻译：磁共振成像定量敏感图局域化处理的系统和方法
公开(公告)号：EP3313273A1
公开(公告)日：2018-05-02
申请号：EP16815201.5
申请日：2016-06-22
申请人： The Medical College of Wisconsin, Inc.
发明人： KOCH, Kevin , ANDERSON, Casey
IPC分类号： A61B5/00 , A61B5/055 , A61B6/00 , G01J5/02 , G01N23/00 , G01R33/16 , G01R33/24
CPC分类号： G01R33/243 , A61B5/0042 , A61B5/0402 , A61B5/055 , A61B5/0816 , A61B5/4082 , A61B5/4088 , A61B5/7257 , A61B5/7285 , A61B2576/026 , G01R33/16 , G01R33/24 , G01R33/443 , G01R33/5602 , G01R33/5616 , G01R33/56536 , G06T11/008
摘要： Systems and methods for quantitative susceptibility mapping (“QSM”) using magnetic resonance imaging (“MRf”) and a localized processing technique are described. A field-shift map is processed based on localized regions of local field perturbations. These localized field-shift regions are processed using established QSM algorithms, or using direct dipole inversion techniques, to compute regional susceptibility distributions from the localized field shift information. When the localized regions correspond to subvolumnes of the field-shift map, local susceptibility maps can be generated and combined to form a composite quantitative susceptibility map. By computing regional susceptibility distributions based on localized field-shift information, residual streaking artifacts in the susceptibility map are constrained to the individual volumes from which they originate, thereby eliminating their propagation through the image.

5. 发明公开

EP3227702A1 CONSTRUCTION OF DIAGNOSTIC IMAGES FROM MRI DATA ACQUIRED IN AN INHOMOGENEOUS POLARISING MAGNETIC FIELD 审中-公开
标题翻译：从非均匀极化磁场中获取MRI数据构建诊断图像
公开(公告)号：EP3227702A1
公开(公告)日：2017-10-11
申请号：EP15865158.8
申请日：2015-12-03
申请人： Voxelgrids Innovations Private Limited
发明人： ARUNACHALAM, Arjun
IPC分类号： G01R33/565
CPC分类号： G01R33/56563 , G01R33/243 , G01R33/445
摘要： According to one aspect of the invention, there is provided a method of constructing a diagnostic image of a sample from MRI data acquired while subjecting the sample to an inhomogeneous polarizing magnetic field, the method comprising the steps of: i) deriving an estimate of the spatial map of the inhomogeneous polarizing magnetic field; ii) acquiring the MRI data; iii) processing the estimate of the spatial map with the acquired MRI data to obtain an estimate of the diagnostic image; iv) calculating an acquired data error in response to the estimates of the spatial map and the diagnostic image; v) updating the estimate of the spatial map in response to the calculated error; and repeating the steps iii) to v) to improve the estimate of the spatial map of the earlier iteration and the estimate of the diagnostic image, wherein the repetition is stopped when the calculated error of the latest iteration reaches within a tolerance range and wherein the estimate of the diagnostic image from the latest iteration becomes the diagnostic image of the sample.
摘要翻译：根据本发明的一个方面，提供了一种从样本经受不均匀极化磁场时获取的MRI数据构建样本的诊断图像的方法，该方法包括以下步骤：i）导出非均匀极化磁场的空间图; ii）获取MRI数据; iii）用所采集的MRI数据处理空间图的估计以获得诊断图像的估计; iv）响应于空间图和诊断图像的估计来计算获取的数据错误; v）响应于所计算的误差来更新空间映射的估计; 以及重复步骤iii）至v）以改善早先迭代的空间映射的估计和诊断图像的估计，其中当最新迭代的计算误差达到公差范围内时停止重复，并且其中，来自最近迭代的诊断图像的估计成为样本的诊断图像。

6. 发明公开

EP2956786A1 PROCEDE ET DISPOSITIF DE MESURE POUR DES APPLICATIONS DE RESONANCE MAGNETIQUE 有权转让
标题翻译：测量磁性应用的方法和装置
公开(公告)号：EP2956786A1
公开(公告)日：2015-12-23
申请号：EP14709993.1
申请日：2014-02-12
申请人： Université Claude Bernard Lyon I , Institut National Des Sciences Appliquées De Lyon , Centre National de la Recherche Scientifique (Etablissement Public) , Université de Rennes 1
发明人： SAINT-JALMES, Hervé , BEUF, Olivier
IPC分类号： G01R33/24 , G01R33/565
CPC分类号： G01R33/243 , G01R33/24 , G01R33/288 , G01R33/34 , G01R33/385 , G01R33/54 , G01R33/56518 , G01R33/56572 , G01R33/5659
摘要： The invention concerns a measuring device for magnetic resonance applications comprising: - in a measurement housing (12) : • a sensor (15) for measuring radio-frequency magnetic fields, • a sensor (20) for measuring magnetic field gradients, • a sensor (40) for measuring the radio-frequency electric field, • a stage for converting the electrical signals delivered by the various measurement sensors into light signals, - a unit for controlling and processing the signals, linked to the conditioning stage of the measurement housing (12) via a beam for transmitting the light signals (13), said unit comprising a stage for converting the light signals into electrical signals delivered by the sensors.

7. 发明公开

EP2841958A1 SYSTEM AND METHOD FOR LOCATING A GRADIENT COIL. 审中-公开
标题翻译：用于定位渐变线圈的系统和方法。
公开(公告)号：EP2841958A1
公开(公告)日：2015-03-04
申请号：EP13726279.6
申请日：2013-04-09
申请人： Koninklijke Philips N.V.
发明人： KRALICK, James Howard , BATTISTA, Frank , LEACH, Jeffrey Edward , BECKER, Dennis Ambrose
IPC分类号： G01R33/385 , G01R33/24
CPC分类号： G01R33/3858 , G01R33/24 , G01R33/243 , G01R33/307 , G01R33/387
摘要： A magnetic resonance imaging (MRI) system includes an MRI magnet (100) including a bore (101) and having a magnetic field and a gradient coil (400) disposed within the bore and having an isocenter (404). A first location within the MRI magnet is determined with respect to a first predetermined reference surface of the MRI magnet, the first location representing a center (104) of the magnetic field. A second location within the gradient coil is determined with respect to a second predetermined reference surface of the gradient coil, the second location representing the isocenter. When the gradient coil is installed within the bore, the second predetermined reference surface abuts the first predetermined reference surface. The first predetermined reference surface is adjusted to an adjusted position, the adjusted position being determined as a function of the first location and the second location and corresponding to a position of the first predetermined reference surface at which the first location coincides with the second location when the gradient coil is installed within the bore.
摘要翻译：磁共振成像（MRI）系统包括MRI磁体（100），其包括孔（101）并且具有磁场和设置在孔内并具有等中心（404）的梯度线圈（400）。 MRI磁体内的第一位置相对于MRI磁体的第一预定参考表面来确定，第一位置表示磁场的中心（104）。相对于梯度线圈的第二预定参考表面确定梯度线圈内的第二位置，第二位置表示等中心点。当梯度线圈安装在孔内时，第二预定参考表面邻接第一预定参考表面。第一预定参考表面被调节到调节位置，调节位置被确定为第一位置和第二位置的函数，并且对应于当第一位置与第二位置重合时的第一预定参考表面的位置梯度线圈安装在孔内。

8. 发明公开

EP2822460A1 MODIFICATION OF A TREATMENT PLAN USING MAGNETIC RESONANCE DATA ACQUIRED DURING A COOLING PERIOD 有权
标题翻译：治疗计划用在冷却时期修改覆盖磁数据
公开(公告)号：EP2822460A1
公开(公告)日：2015-01-14
申请号：EP13716422.4
申请日：2013-02-26
申请人： Koninklijke Philips N.V.
发明人： KÖHLER, Max Oskar , VAHALA, Erkki Tapani , TANTTU, Jukka Ilmari , TÖLÖ, Jaakko Juhani
IPC分类号： A61B5/055 , A61N7/02 , G01R33/48 , A61B18/18
CPC分类号： A61B5/4836 , A61B5/01 , A61B5/055 , A61B5/7207 , A61B18/14 , A61B18/1815 , A61B18/20 , A61B34/10 , A61B2018/00577 , A61B2018/00642 , A61B2018/00791 , A61B2018/1807 , A61B2090/374 , A61F7/00 , A61F2007/0095 , A61N1/403 , A61N7/02 , G01R33/243 , G01R33/4804 , G01R33/4808 , G01R33/4814 , G06F19/00
摘要： A medical apparatus (300, 400, 500, 600) comprising a magnetic resonance imaging system (302). The medical apparatus further comprises a heating system (320, 502, 601) operable for heating a target zone (321) and a processor (326). Execution of machine readable instructions causes the processor to receive (100, 200, 700, 800) a treatment plan (340). Execution of the instructions further cause the processor to repeatedly: control (102, 204, 704, 804, 900, 1002) the heating system, using the treatment plan, to heat the target zone during alternating heating periods and cooling periods; acquire (104, 208, 702, 706, 802, 806, 902, 906, 1000, 1004) magnetic resonance data using the magnetic resonance imaging system, and modify (110, 214, 712, 812, 1008) the treatment plan using the magnetic resonance data. The instructions cause the processor to acquire the magnetic resonance data during a cooling period selected from at least one of the cooling periods.

9. 发明公开

EP2636368A1 Modification of a treatment plan using magnetic resonance data acquired during a cooling period 审中-公开
标题翻译：改变的治疗计划与冷却期间的磁共振数据中所检测到的
公开(公告)号：EP2636368A1
公开(公告)日：2013-09-11
申请号：EP12158033.6
申请日：2012-03-05
申请人： Koninklijke Philips Electronics N.V.
发明人： Vahala, Erkki, T. , Kohler, Max, O. , Tanttu, Jukka, I. , Tolo, Jaakko, J.
IPC分类号： A61B5/055 , A61N7/02 , G01R33/48
CPC分类号： A61B5/4836 , A61B5/01 , A61B5/055 , A61B5/7207 , A61B18/14 , A61B18/1815 , A61B18/20 , A61B34/10 , A61B2018/00577 , A61B2018/00642 , A61B2018/00791 , A61B2018/1807 , A61B2090/374 , A61F7/00 , A61F2007/0095 , A61N1/403 , A61N7/02 , G01R33/243 , G01R33/4804 , G01R33/4808 , G01R33/4814 , G06F19/00
摘要： A medical apparatus (300, 400, 500, 600) comprising a magnetic resonance imaging system (302). The medical apparatus further comprises a heating system (320, 502, 601) operable for heating a target zone (321) and a processor (326). Execution of machine readable instructions causes the processor to receive (100, 200, 700, 800) a treatment plan (340). Execution of the instructions further cause the processor to repeatedly: control (102, 204, 704, 804, 900, 1002) the heating system, using the treatment plan, to heat the target zone during alternating heating periods and cooling periods; acquire (104, 208, 702, 706, 802, 806, 902, 906, 1000, 1004) magnetic resonance data using the magnetic resonance imaging system, and modify (110, 214, 712, 812, 1008) the treatment plan using the magnetic resonance data. The instructions cause the processor to acquire the magnetic resonance data during a cooling period selected from at least one of the cooling periods.
摘要翻译：一种医疗装置（300，400，500，600），包括：磁共振成像系统（302）。该医疗装置还包括一个加热系统（320，502，601），其可操作用于加热的目标区（321）和处理器（326）。的机器可读指令的执行使所述处理器接收（100，200，700，800）的治疗计划（340）。所述指令的执行还使所述处理器重复地：控制（102，204，704，804，900，1002）中的加热系统，使用治疗计划，以加热交替的加热周期和冷却段期间所述目标区; 获得（104，208，702，706，802，806，902，906，1000，1004）使用所述磁共振成像系统，并修改（110，214，712，812，1008），使用治疗计划磁共振数据磁共振数据。所述指令致使所述处理器在从所述冷却周期的至少一个选定的冷却期间采集磁共振数据。

10. 发明公开

EP2217951A4 SMALL MAGNET AND RF COIL FOR MAGNETIC RESONANCE RELAXOMETRY 审中-公开
标题翻译：小的磁性和射频线圈磁弛豫
公开(公告)号：EP2217951A4
公开(公告)日：2011-05-18
申请号：EP08848455
申请日：2008-11-06
申请人： T2 BIOSYSTEMS INC
发明人： PRADO PABLO J , LOWERY THOMAS J JR
IPC分类号： G01R33/30 , G01N24/08 , G01R33/383 , G01R33/44 , G01R33/465 , G01V3/00
CPC分类号： G01R33/448 , G01N24/08 , G01R33/243 , G01R33/302 , G01R33/307 , G01R33/34053 , G01R33/3806 , G01R33/383 , G01R33/44 , G01R33/465

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