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1. 发明授权

EP3047293B1 MRI USING A MODIFIED DIXON SEQUENCE WITH REDUCTION OF FOLD-OVER ARTIFACTS 有权
公开(公告)号：EP3047293B1
公开(公告)日：2020-08-05
申请号：EP14766223.3
申请日：2014-09-02
申请人： Koninklijke Philips N.V. , Board of Regents of the University of Texas System
发明人： PEDROSA, Ivan , MADHURANTHAKAM, Ananth , DIMITROV, Ivan
IPC分类号： G01R33/48 , G01R33/483

2. 发明公开

EP3047293A1 MRI USING A MODIFIED DIXON SEQUENCE WITH REDUCTION OF FOLD-OVER ARTIFACTS 审中-公开
标题翻译： MRI使用修改DIXONSEQUENZ为了减少折叠式的工件
公开(公告)号：EP3047293A1
公开(公告)日：2016-07-27
申请号：EP14766223.3
申请日：2014-09-02
申请人： Koninklijke Philips N.V. , Board of Regents of the University of Texas System
发明人： PEDROSA, Ivan , MADHURANTHAKAM, Ananth , DIMITROV, Ivan
IPC分类号： G01R33/48 , G01R33/483
摘要： A magnetic resonance imaging (MRI) system (500), the system includes at least one controller (510) which performs a modified rotated slab excitation (mROSE) sequence for volume selection to exclude portions of a subject under exam which are within the scanning volume and outside of a field-of-view (FOV) so as to reduce foldover artifacts which originate from the excluded portions of the subject under exam, where the mROSE sequence performs volume excitation based upon either optimized symmetrical, minimum-phase, or stretched minimum-phase radio-frequency (RF) pulses in a sagittal plane and encodes the scanning volume in a coronal plane. The controller also performs a chemical-shift sequence including a modified DIXON (mDIXON) sequence for substantially uniform fat/water separation within a FOV which lies within the scanning volume; and/or acquires echo information for reconstructing at least a part of an image.

3. 发明公开

EP3131458A1 METHOD OF IMPROVED MULTIPLE-PHASE DYNAMIC CONTRAST-ENHANCED MAGNETIC RESONANCE IMAGING 有权转让
标题翻译： VERFAHREN ZUR VERBESSERTEN MULTIPHASEN-MAGNETRESONANZBILDGEBUNG MIT DYNAMISCHERKONTRASTVERSTÄRKUNG
公开(公告)号：EP3131458A1
公开(公告)日：2017-02-22
申请号：EP15718101.7
申请日：2015-03-31
申请人： Koninklijke Philips N.V. , The University of Texas Southwestern Medical Center
发明人： GDANIEC, Nadine , BOERNERT, Peter , DONEVA, Mariya Ivanova , PEDROSA, Ivan
IPC分类号： A61B5/00 , A61B5/055 , A61B6/00
摘要： A method of operating a magnetic resonance imaging system (10) with regard to acquiring multiple-phase dynamic contrast-enhanced magnetic resonance images, the method comprising steps of acquiring (48) a first set of magnetic resonance image data (xpre) prior to administering a contrast agent to the subject of interest (20), by employing a water/fat magnetic resonance signal separation technique, determining (52) a first image of the spatial distribution of fat (Ipre) of at least the portion of the subject of interest (20), acquiring (50) at least a second set of magnetic resonance image data (x2) of at least the portion of the subject of interest (20) after administering the contrast agent to the subject of interest (20), by employing a water/fat magnetic resonance signal separation technique, determining (54) at least a second image of the spatial distribution of fat (I2ph) of at least the portion of the subject of interest (20), applying (56) an image registration method to the second image of the spatial distribution of fat with reference to the first image of the spatial distribution of fat (Ipre) for correcting a potential motion of the subject of interest (20); and a magnetic resonance imaging system (10) having a control unit (26) that is configured to carry out steps (56-64) of such a method; and a software module (44) for carrying out such a method, wherein the method steps (56-64) to be conducted are converted into a program code that is implementable in a memory unit (30) and is executable by a processor unit (32) of the magnetic resonance imaging system (10).
摘要翻译：一种在获取多相动态对比度增强磁共振图像时操作磁共振成像系统（10）的方法，所述方法包括以下步骤：在施用之前获取（48）第一组磁共振图像数据（xpre）通过使用水/脂肪磁共振信号分离技术来确定（52）至少感兴趣的对象的部分的脂肪的空间分布（Ipre）的第一图像（52），所述目标对象的造影剂（20）（20），通过采用（50）至少所述感兴趣对象的部分（20）的至少第二组磁共振图像数据（x2），所述至少一部分感兴趣的对象的主体（20）水分/脂肪磁共振信号分离技术，确定（54）至少所述感兴趣对象部分（20）的脂肪（I2ph）的空间分布的至少第二图像，应用（56）图像配准方法到seco 参考脂肪空间分布的第一图像（Ipre）来修正感兴趣对象的潜在运动（20）的脂肪的空间分布的图像; 以及具有控制单元（26）的磁共振成像系统（10），所述控制单元被配置为执行这种方法的步骤（56-64）; 以及用于执行这种方法的软件模块（44），其中要执行的方法步骤（56-64）被转换为可在存储器单元（30）中实现的程序代码，并且可由处理器单元 32）的磁共振成像系统（10）。

4. 发明授权

EP3131458B1 SYSTEM AND SOFTWARE MODULE OF IMPROVED MULTIPLE-PHASE DYNAMIC CONTRAST-ENHANCED MAGNETIC RESONANCE IMAGING 有权转让
公开(公告)号：EP3131458B1
公开(公告)日：2019-12-11
申请号：EP15718101.7
申请日：2015-03-31
申请人： Koninklijke Philips N.V. , The University of Texas Southwestern Medical Center
发明人： GDANIEC, Nadine , BOERNERT, Peter , DONEVA, Mariya Ivanova , PEDROSA, Ivan
IPC分类号： A61B5/00 , A61B5/055 , A61B6/00

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