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1. 发明公开

EP1748300A1 Method for correcting inhomogeneities of the static magnetic field, particularly of the static magnetic field generated by the magnetic structure of a machine for acquiring mri images 有权
标题翻译：校正Inhomogeneitäten静磁场的方法，特别是通过一台机器的磁性结构产生的，用于接收核磁共振静磁场
公开(公告)号：EP1748300A1
公开(公告)日：2007-01-31
申请号：EP05425499.0
申请日：2005-07-11
申请人： Esaote S.p.A.
发明人： Besio, Stefano , Pittaluga, Stefano , Trequattrini, Alessandro
IPC分类号： G01R33/387
CPC分类号： G01R33/387
摘要： Method for correcting inhomogeneities of the static magnetic field particularly of the static magnetic field generated by the magnetic structure of a machine for acquiring nuclear magnetic resonance images provides to determine the number, the position and the magnetic moment of dipoles compensating inhomogeneities of the magnetic field to be positioned on a positioning grid such to minimize a function wherein even the total magnetic moment of compensation dipoles provided for compensating the magnetic field inhomogeneity is minimized in addition to minimizing said certain norm of the difference between the inhomogeneity vector of each magnetic field components and the linear combination of effect vectors corresponding to said magnetic field component of compensation dipoles.
摘要翻译：用于校正静磁场特别是通过一台机器的磁结构中产生的静磁场的不均匀性，用于获取核磁共振图像中的方法提供给确定性矿的数量，位置和偶极子的磁矩补偿的磁场的不均匀性，以上的定位网格寻求最小化的函数worin甚至提供用于补偿磁场不均匀性的补偿偶极子的总磁矩被定位在除了被最小化以最小化所述各磁场成分的不均匀性矢量和之间的差的某些规范效应向量对应于补偿偶极子的所述磁场分量的线性组合。

2. 发明授权

EP2309284B1 Method for making a permanent magnet particularly for MRI scanners and a permanent magnet, particularly for MRI scanners made by said method 有权转让
标题翻译：对于制造永磁体，特别是用于为Kerspintomographen Kerspintomographen通过该方法制备的方法，及永久磁铁，特别是
公开(公告)号：EP2309284B1
公开(公告)日：2013-12-25
申请号：EP10186455.1
申请日：2010-10-04
申请人： Esaote S.p.A.
发明人： Besio, Stefano , Pittaluga, Stefano , Punzo, Vincenzo , Trequattrini, Alessandro
IPC分类号： G01R33/383 , H01F7/02
CPC分类号： G01R33/383 , Y10T29/49764
摘要： Method for making magnets for use in MRI scanners, which magnets are three-dimensional and have a tubular wall made of magnetized material, the tubular wall being composed of individual elements made of magnetized material. The invention provides the following steps: determining the modulus and direction of the magnetization of elements necessary for generating a predetermined magnetic field in the cavity inside said tubular wall in a theoretical two-dimensional magnet model, extruding the two-dimensional model to a three-dimensional model and at least partially compensating aberrations, distortions or inhomogeneites of the magnetic field generated in the three-dimensional model by modifying the magnetization orientation in the individual elements and in the plane of the two-dimensional model such to minimize differences between the magnetic field in the two-dimensional model and the magnetic field in the three-dimensional model.
摘要翻译：用于制备磁体用于MRI扫描仪，其中磁铁是三维的，并且具有由磁化材料制成的管状壁中的方法，所述管状壁部分由制成磁化材料的单独元件。本发明提供了以下步骤：确定挖掘模量和必要的元素用于在理论二维磁模型在所述管状壁的内部腔体产生预定的磁场，挤出所述二维模型于三轮的磁化的方向维模型和至少通过修改单个元件的磁化方向和平面中的二维模型的寻求最小化的磁场之间的差异部分地补偿像差，失真或在所述三维模型所产生的磁场的inhomogeneites 在三维模型的二维模型和磁场。

3. 发明授权

EP2108973B1 Process for manufacturing pole pieces of nuclear magnetic resonance imaging magnets 有权
标题翻译：一种用于极片的磁共振成像磁体的制备方法
公开(公告)号：EP2108973B1
公开(公告)日：2011-03-09
申请号：EP08172893.3
申请日：2001-05-30
申请人： Esaote S.p.A.
发明人： Pittaluga, Stefano , Trequattrini, Alessandro , Carlini, Davide
IPC分类号： G01R33/3873 , G01R33/383
CPC分类号： G01R33/3873 , G01R33/383

4. 发明授权

EP1705494B1 Method for determining construction parameters of magnet structures designed to generate magnetic fields in predetermined volumes of space and method for correcting magnetic fields in predetermined volumes of space, particularly in MRI apparatus 有权转让
标题翻译：一种用于在MRI设备确定磁体结构的构造参数，用于产生在特定空间内产生磁场，并在空间某些体积磁场校正方法，特别是方法
公开(公告)号：EP1705494B1
公开(公告)日：2008-10-01
申请号：EP06110456.8
申请日：2006-02-27
申请人： Esaote S.p.A.
发明人： Trequattrini, Alessandro , Besio, Stefano , Pittaluga, Stefano , Punzo, Vincenzo
IPC分类号： G01R33/38
CPC分类号： G01R33/3802 , G01R33/3873

5. 发明公开

EP1962100A1 Magnetic structure for MRI machines and MRI machine particularly for orthopedic or rheumatologic applications 审中-公开
标题翻译：磁结构的MRI设备和MRI机专门用于整形外科或风湿病的应用
公开(公告)号：EP1962100A1
公开(公告)日：2008-08-27
申请号：EP07425094.5
申请日：2007-02-20
申请人： Esaote S.p.A.
发明人： Trequattrini, Alessandro , Pittaluga, Stefano , Besio, Stefano , Biglieri, Eugenio
IPC分类号： G01R33/383 , G01R33/3873
CPC分类号： G01R33/383 , G01R33/3806 , G01R33/3873
摘要： Magnetic structure for MRI machines, which machine has a U-shaped or O-shaped geometry having two opposite poles for generating a magnetic field there between, the poles being arranged at a predetermined distance one with respect to the other by a magnetic yoke (4) having an inverted U shape or an O shape, which poles and at least a part of which yoke delimit a cavity for housing at least a part of a patient body.
The invention relates also to a machine for detecting MRI images particularly of the anatomical region of the hand or the foot or part of joints and which machine has a magnetic structure of the type described above.
摘要翻译：磁结构用于MRI机器，机器具有U形或O形具有用于产生磁场的存在之间，由磁轭被布置在所述磁极以预定距离的一个相对于另外两个相反的极几何（4- ），其具有倒U形或O的形状，这极和至少哪轭的一部分至少确定了一个空腔，用于容纳患者身体的一部分。本发明涉及这样一种用于检测MRI图像特别是手的解剖区域或脚或接缝的一部分，并且其中机器的机器具有上述类型的磁结构。

6. 发明公开

EP1624315A1 Method and probe for compensating for magnetic noise fields in space volumes, particularly in magnetic resonance imaging apparatus 审中-公开
标题翻译：方法和探针用于补偿空间体积的磁噪声领域，特别是在磁共振成像装置
公开(公告)号：EP1624315A1
公开(公告)日：2006-02-08
申请号：EP05106831.0
申请日：2005-07-25
申请人： Esaote S.p.A.
发明人： Pittaluga, Stefano , Iaia, Paolo
IPC分类号： G01R33/389
CPC分类号： G01R33/389 , G01R33/56563
摘要： A method for compensating for magnetic noise fields in space volumes, comprising the following steps: determining the strength of a magnetic field outside said space volume; defining, on a theoretical basis, i.e. according to the laws of electromagnetism, and/or on an empirical basis, the correlation between the noise field outside the space volume and the corresponding noise field inside said space volume, or computing the noise field inside the space volume, on the basis of the measurement/s of the magnetic field outside the space volume; on the basis of the inside magnetic field, as determined theoretically or empirically, generating a magnetic compensation field, particularly for neutralizing the noise field in said space volume.
According to the invention, the method further includes the step of generating, at least at some or at each of the noise field detection locations, a local magnetic field for at least partly compensating for the effect of the predetermined magnetic field Bo, in the space volume (V).
摘要翻译：一种用于补偿在空间体积的磁噪声的字段，其包括以下步骤的方法：确定开采所述空间体积之外的磁场的强度; - 定义，在一个理论基础，即雅丁到电磁的法律和/或上的经验的基础上，噪声场之间的空间体积之外，所述空间体积，或计算的空间容积内部的噪声场内部相应的噪声场的相关性，的基础上测量的空间体积之外的磁场/秒; 内部磁场的基础上，作为确定性理论或经验开采，产生磁场的补偿，特别是用于在所述空间体积中和噪声场。。根据本发明，该方法还包括生成的步骤中，至少在一些或在每个噪声场检测位置，用于至少部分地补偿所述预定磁场Bo的效果的局部磁场的，在该空间中体积（V）。

7. 发明公开

EP1167989A3 Process for manufacturing pole pieces of nuclear magnetic resonance imaging magnets 审中-公开
标题翻译：一种制备的极靴磁体的磁共振成像过程
公开(公告)号：EP1167989A3
公开(公告)日：2003-08-13
申请号：EP01113160.4
申请日：2001-05-30
申请人： Esaote S.p.A.
发明人： Pittaluga, Stefano , Trequattrini, Alessandro , Carlini, Davide
IPC分类号： G01R33/3873
CPC分类号： G01R33/3873 , G01R33/383
摘要： The invention relates to a process for manufacturing magnetic field generating devices in Nuclear Magnetic Resonance imaging apparatuses and to an image generating device according to said method. According to the invention, at least one layer of each pole piece is composed a plurality of adjacent or overlapping sheets, electrically insulated from each other. These sheets or foils may have slots, notches or apertures which cause bridges of a material having a lower electric conductivity to be formed between the areas separated by the notches and/or apertures. The bridges of material may be removed after sheet assembly by a cutting operation, particularly by laser cutting.

8. 发明公开

EP1167989A2 Process for manufacturing pole pieces of nuclear magnetic resonance imaging magnets 审中-公开
标题翻译：一种制备的极靴磁体的磁共振成像过程
公开(公告)号：EP1167989A2
公开(公告)日：2002-01-02
申请号：EP01113160.4
申请日：2001-05-30
申请人： Esaote S.p.A.
发明人： Pittaluga, Stefano , Trequattrini, Alessandro , Carlini, Davide
IPC分类号： G01R33/383
CPC分类号： G01R33/3873 , G01R33/383
摘要： The invention relates to a process for manufacturing magnetic field generating devices in Nuclear Magnetic Resonance imaging apparatuses and to an image generating device according to said method. According to the invention, at least one layer of each pole piece is composed a plurality of adjacent or overlapping sheets, electrically insulated from each other. These sheets or foils may have slots, notches or apertures which cause bridges of a material having a lower electric conductivity to be formed between the areas separated by the notches and/or apertures. The bridges of material may be removed after sheet assembly by a cutting operation, particularly by laser cutting.
摘要翻译：本发明涉及一种用于核磁共振成像装置和一种图像生成装置gemäß到所述方法制造磁场产生装置的处理。。根据本发明，每个极片的至少一个层是由多个相邻的或重叠的片材，从海誓山盟电绝缘。这些片或箔可具有导致具有较低导电性的材料的桥由切口和/或孔中分离的区域之间形成的槽，凹口或孔。材料的桥可以通过切割手术组件片材之后被除去，特别是通过激光切割。

9. 发明授权

EP1464977B1 Magnet structure for nuclear magnetic resonance imaging apparatus 有权转让
公开(公告)号：EP1464977B1
公开(公告)日：2019-04-17
申请号：EP04100369.0
申请日：2004-02-02
申请人： Esaote S.p.A.
发明人： Trequattrini, Alessandro , Carlini, Davide , Pittaluga, Stefano , Besio, Stefano
IPC分类号： G01R33/383

10. 发明公开

EP2309284A1 Method for making a permanent magnet particularly for MRI scanners and a permanent magnet, particularly for MRI scanners made by said method 有权转让
标题翻译：对于制造永磁体，特别是用于为Kerspintomographen Kerspintomographen通过该方法制备的方法，及永久磁铁，特别是
公开(公告)号：EP2309284A1
公开(公告)日：2011-04-13
申请号：EP10186455.1
申请日：2010-10-04
申请人： Esaote S.p.A.
发明人： Besio, Stefano , Pittaluga, Stefano , Punzo, Vincenzo , Trequattrini, Alessandro
IPC分类号： G01R33/383 , H01F7/02
CPC分类号： G01R33/383 , Y10T29/49764
摘要： Method for making magnets for use in MRI scanners, which magnets are three-dimensional and have a tubular wall made of magnetized material, the tubular wall being composed of individual elements made of magnetized material.
The invention provides the following steps:
determining the modulus and direction of the magnetization of elements necessary for generating a predetermined magnetic field in the cavity inside said tubular wall in a theoretical two-dimensional magnet model,
extruding the two-dimensional model to a three-dimensional model and at least partially compensating aberrations, distortions or inhomogeneites of the magnetic field generated in the three-dimensional model by modifying the magnetization orientation in the individual elements and in the plane of the two-dimensional model such to minimize differences between the magnetic field in the two-dimensional model and the magnetic field in the three-dimensional model.

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