公开(公告)号：US20160334481A1

公开(公告)日：2016-11-17

申请号：US15105751

申请日：2014-12-17

申请人： ASPECT IMAGING LTD.

发明人： Uri RAPOPORT

IPC分类号： G01R33/42 ,  G01R33/00

CPC分类号： G01R33/42 ,  A61B5/055 ,  A61B2562/182 ,  G01R33/0052 ,  G01R33/28 ,  G01R33/422 ,  G01R33/48 ,  H05K9/00

摘要： The present invention provides, in a magnetic resonance imaging device (MRD) comprising (a) a main longitudinal axis with a distal and proximal ends; (b) an open bore extended along the axis and terminated by an aperture located in the proximal end; and (c) a closure assembly which is shaped to fit the aperture; an RF shielding conduit (RFSC), having apertures shaped to permit passage of medical equipment tubing from the external environment of the MRD to inner space of the bore, affixed to the closure assembly, wherein the conduit is characterized by a length (l) and width (w), l:w ratio is greater than a predefined value n, thereby providing RF shielding.

公开(公告)号：US09421398B2

公开(公告)日：2016-08-23

申请号：US14481619

申请日：2014-09-09

申请人： ViewRay Incorporated

发明人： Shmaryu M. Shvartsman ,  Gordon DeMeester ,  James F. Dempsey ,  John Lester Patrick

IPC分类号： G01R33/421 ,  G01R33/42 ,  A61B5/055 ,  G01R33/28 ,  A61N5/10 ,  G01R33/48 ,  G01R33/38

CPC分类号： A61N5/1049 ,  A61B5/055 ,  A61B5/0555 ,  A61N5/1039 ,  A61N5/1081 ,  A61N2005/1055 ,  A61N2005/1088 ,  A61N2005/1089 ,  A61N2005/1094 ,  G01R33/28 ,  G01R33/3806 ,  G01R33/42 ,  G01R33/421 ,  G01R33/4808

摘要： A radiation therapy system comprises a magnetic resonance imaging (MRI) system combined with an irradiation system, which can include one or more linear accelerators (linacs) that can emit respective radiation beams suitable for radiation therapy. The MRI system includes a split magnet system, comprising first and second main magnets separated by gap. A gantry is positioned in the gap between the main MRI magnets and supports the linac(s) of the irradiation system. The gantry is rotatable independently of the MRI system and can angularly reposition the linac(s). Shielding can also be provided in the form of magnetic and/or RF shielding. Magnetic shielding can be provided for shielding the linac(s) from the magnetic field generated by the MRI magnets. RF shielding can be provided for shielding the MRI system from RF radiation from the linac.

摘要翻译： 放射治疗系统包括与照射系统组合的磁共振成像（MRI）系统，其可以包括可以发射适合于放射治疗的各个辐射束的一个或多个线性加速器（直线加速器）。 MRI系统包括分裂磁体系统，包括由间隙分开的第一和第二主磁体。 龙门架位于主MRI磁体之间的间隙中，并支撑照射系统的直线加速器。 台架可以独立于MRI系统旋转，并且可以有角度地重新定位直线加速器。 屏蔽也可以以磁性和/或RF屏蔽的形式提供。 可以提供磁屏蔽来屏蔽直线加速器与MRI磁铁产生的磁场。 可以提供射频屏蔽来屏蔽MRI系统免受来自直线加速器的射频辐射。

公开(公告)号：US20150293192A1

公开(公告)日：2015-10-15

申请号：US14439417

申请日：2013-11-01

申请人： BRIGHAM AND WOMEN'S HOSPITAL, INC.

发明人： Ehud J. Schmidt ,  Tsz Ho Tse ,  Samuel Patz ,  Charles L. Dumoulin

IPC分类号： G01R33/42 ,  H01F1/00 ,  H01B11/18 ,  G01R33/36 ,  G01R33/34

CPC分类号： G01R33/42 ,  G01R33/34092 ,  G01R33/36 ,  G01R33/3685 ,  H01B11/1895 ,  H01F1/0018 ,  H01F17/045 ,  H01F27/306 ,  H01F27/34

摘要： A method and apparatus for suppressing electromagnetic fields induced in cables and electronic medical devices by a magnetic resonance imaging (“MRI”) system are provided. The apparatus includes a cable assembly constructed as a conductive wire wrapped around a paramagnetic core. The paramagnetic core may include a tube filled with a paramagnetic material, such as a gadolinium-based solution or a liquid in which iron oxide particles are suspended.

摘要翻译： 提供一种用于通过磁共振成像（“MRI”）系统抑制在电缆和电子医疗装置中感应的电磁场的方法和装置。 该装置包括一个电缆组件，该电缆组件被构造成缠绕在顺磁芯上的导线。 顺磁芯可以包括填充有顺磁性材料的管，例如钆基溶液或其中悬浮有氧化铁颗粒的液体。

公开(公告)号：US20150241527A1

公开(公告)日：2015-08-27

申请号：US14188374

申请日：2014-02-24

申请人： MICHAEL D. BULATOWICZ

发明人： MICHAEL D. BULATOWICZ

IPC分类号： G01R33/34 ,  B05D7/00

CPC分类号： G01R33/34 ,  B05D7/52 ,  B32B15/00 ,  B32B15/01 ,  B32B18/00 ,  C04B37/001 ,  C04B37/021 ,  C04B2237/34 ,  C04B2237/348 ,  C04B2237/36 ,  C04B2237/408 ,  G01C19/00 ,  G01C19/60 ,  G01R33/00 ,  G01R33/42 ,  G01R33/56536 ,  Y10T428/23

摘要： One example includes a method for fabricating a compound material. The method includes providing a first discrete material layer having a first thickness dimension. The first discrete material layer includes a first material having a first magnetic susceptibility. The method also includes depositing a second discrete material layer having a second thickness dimension over the first discrete material layer. The second discrete material layer can include a second material having a second magnetic susceptibility. The relative first and second thickness dimensions can be selected to provide a desired magnetic susceptibility of the compound material.

摘要翻译： 一个例子包括制造复合材料的方法。 该方法包括提供具有第一厚度尺寸的第一离散材料层。 第一离散材料层包括具有第一磁化率的第一材料。 该方法还包括在第一离散材料层上沉积具有第二厚度尺寸的第二离散材料层。 第二离散材料层可以包括具有第二磁化率的第二材料。 可以选择相对的第一和第二厚度尺寸以提供复合材料的期望的磁化率。

公开(公告)号：US20150168519A1

公开(公告)日：2015-06-18

申请号：US14574785

申请日：2014-12-18

申请人： ASPECT IMAGING LTD.

发明人： Uri RAPOPORT

IPC分类号： G01R33/422 ,  G01R33/48

CPC分类号： G01R33/42 ,  A61B5/055 ,  A61B2562/182 ,  G01R33/0052 ,  G01R33/28 ,  G01R33/422 ,  G01R33/48 ,  H05K9/00

摘要： The present invention provides, in a magnetic resonance imaging device (MRD) comprising (a) a main longitudinal axis with a distal and proximal ends; (b) an open bore extended along the axis and terminated by an aperture located in the proximal end; and (c) a closure assembly which is shaped to fit the aperture; an RF shielding conduit (RFSC), having apertures shaped to permit passage of medical equipment tubing from the external environment of the MRD to inner space of the bore, affixed to the closure assembly, wherein the conduit is characterized by a length (l) and width (w), l:w ratio is greater than a predefined value n, thereby providing RF shielding.

摘要翻译： 本发明在磁共振成像装置（MRD）中提供，该磁共振成像装置包括：（a）具有远端和近端的主纵轴; （b）沿轴线延伸并由位于近端的孔终止的开孔; 和（c）成形为适合孔的封闭组件; RF屏蔽导管（RFSC），其具有成形为允许医疗设备管道从MRD的外部环境通向固定到封闭组件的孔的内部空间的孔，其中导管的特征在于长度（l）和 宽（w），l：w比大于预定值n，从而提供RF屏蔽。

公开(公告)号：US20150115956A1

公开(公告)日：2015-04-30

申请号：US14396541

申请日：2013-03-13

申请人： Jerome L. Ackerman ,  Kenneth Kwong ,  Timothy G. Reese ,  Yaotang WU

发明人： Jerome L. Ackerman ,  Kenneth Kwong ,  Timothy G. Reese ,  Yaotang WU

IPC分类号： G01R33/42 ,  G01R33/44

CPC分类号： G01R33/42 ,  A61B5/055 ,  G01R33/288 ,  G01R33/44 ,  G01R33/4826 ,  G01R33/543

摘要： A system and method for performing quiet magnetic resonance imaging (“MRI”) are provided. An MRI system is directed to perform a pulse sequence that includes a magnetic field gradient s tapped through a plurality of different gradient component amplitude values in a manner that controls the difference between successive gradient amplitudes. In this way, force changes generated during the transition from one gradient component amplitude to the next are controlled, thereby resulting in a significant noise reduction. Additionally, the gradient amplitude values are ordered such that the transition of the gradient component amplitude in successive repetitions of the pulse sequence is controlled, thereby mitigating the generation of forces between pulse sequence repetitions.

摘要翻译： 提供了用于执行安静磁共振成像（“MRI”）的系统和方法。 MRI系统旨在执行脉冲序列，其包括以控制连续梯度振幅之间的差异的方式通过多个不同的梯度分量幅度值抽头的磁场梯度。 以这种方式，在从一个梯度分量振幅到下一个梯度分量振幅的转变期间产生的力变化被控制，从而导致显着的降噪。 另外，梯度幅度值被排序使得控制脉冲序列的连续重复中的梯度分量幅度的转变，从而减轻脉冲序列重复之间的力的产生。

公开(公告)号：US20110012593A1

公开(公告)日：2011-01-20

申请号：US12837309

申请日：2010-07-15

申请人： Shmaryu M. Shvartsman ,  Gordon DeMeester ,  James F. Dempsey ,  John Lester Patrick

发明人： Shmaryu M. Shvartsman ,  Gordon DeMeester ,  James F. Dempsey ,  John Lester Patrick

IPC分类号： G01R33/44

CPC分类号： A61N5/1049 ,  A61B5/055 ,  A61B5/0555 ,  A61N5/1039 ,  A61N5/1081 ,  A61N2005/1055 ,  A61N2005/1088 ,  A61N2005/1089 ,  A61N2005/1094 ,  G01R33/28 ,  G01R33/3806 ,  G01R33/42 ,  G01R33/421 ,  G01R33/4808

摘要： A radiation therapy system comprises a magnetic resonance imaging (MRI) system combined with an irradiation system, which can include one or more linear accelerators (linacs) that can emit respective radiation beams suitable for radiation therapy. The MRI system includes a split magnet system, comprising first and second main magnets separated by gap. A gantry is positioned in the gap between the main MRI magnets and supports the linac(s) of the irradiation system. The gantry is rotatable independently of the MRI system and can angularly reposition the linac(s). Shielding can also be provided in the form of magnetic and/or RF shielding. Magnetic shielding can be provided for shielding the linac(s) from the magnetic field generated by the MRI magnets. RF shielding can be provided for shielding the MRI system from RF radiation from the linac.

摘要翻译： 放射治疗系统包括与照射系统组合的磁共振成像（MRI）系统，其可以包括可以发射适合于放射治疗的各个辐射束的一个或多个线性加速器（直线加速器）。 MRI系统包括分裂磁体系统，包括由间隙分开的第一和第二主磁体。 龙门架位于主MRI磁体之间的间隙中，并支撑照射系统的直线加速器。 台架可以独立于MRI系统旋转，并且可以有角度地重新定位直线加速器。 屏蔽也可以以磁性和/或RF屏蔽的形式提供。 可以提供磁屏蔽来屏蔽直线加速器与MRI磁铁产生的磁场。 可以提供射频屏蔽来屏蔽MRI系统免受来自直线加速器的射频辐射。

公开(公告)号：US12055612B2

公开(公告)日：2024-08-06

申请号：US17742676

申请日：2022-05-12

申请人： Joon Bu Park

发明人： Joon Bu Park

IPC分类号： D21H27/30 ,  D21H27/32 ,  D21H27/40 ,  G01R33/42 ,  H05K9/00 ,  B32B3/12 ,  B32B29/00 ,  B32B29/08

CPC分类号： G01R33/42 ,  D21H1/02 ,  D21H27/32 ,  D21H27/40 ,  H05K9/0075 ,  B32B3/12 ,  B32B29/005 ,  B32B29/08 ,  B32B2250/03 ,  B32B2250/26 ,  B32B2571/00

摘要： Corrugated paper includes first and second sheets of paper; and a layer of structured paper disposed between the first and second sheets of paper. The layer of structured paper includes cells, in which at least some of the cells are negative Poisson's ratio (NPR) cells. Each NPR cell includes top and bottom walls, and side walls angled inwards toward a central portion of the NPR cell, such that application of a compressive force between the top and bottom walls of the NPR cell causes a lateral dimension of the NPR cell between opposite side walls to decrease. The NPR cells exhibit a Poisson's ratio of between 0 and −1.

公开(公告)号：US20230194639A1

公开(公告)日：2023-06-22

申请号：US17552900

申请日：2021-12-16

申请人： Siemens Healthcare GmbH

发明人： Thorsten Feiweier ,  Mario Zeller ,  Bryan Clifford ,  Zahra Hosseini ,  Adam Kettinger ,  Simon Bauer ,  Nadine Dispenza

IPC分类号： G01R33/54 ,  G01R33/42 ,  G01R33/58 ,  G01R33/561

CPC分类号： G01R33/543 ,  G01R33/42 ,  G01R33/583 ,  G01R33/5613

摘要： The invention relates to a method for acquiring a magnetic resonance image dataset of a subject, a magnetic resonance imaging system and a non-transitory computer-readable medium. The method comprises the steps:



(a) determining scan conditions relating to an imaging protocol which is to be carried out on the subject;
(b) based on the scan conditions and/or on predetermined reference parameters, determining whether at least one imaging preparation procedure may be omitted or accelerated to have a shortened duration;
(c) depending on the determination of step (b), omitting or carrying out the least one imaging preparation procedure at the standard or at the shortened duration;
(d) carrying out the imaging protocol in order to acquire the magnetic resonance image dataset.

公开(公告)号：US10012711B2

公开(公告)日：2018-07-03

申请号：US14574785

申请日：2014-12-18

申请人： Aspect Imaging Ltd.

发明人： Uri Rapoport

IPC分类号： G01V3/00 ,  G01R33/42 ,  H05K9/00 ,  A61B5/055 ,  G01R33/422 ,  G01R33/48 ,  G01R33/00 ,  G01R33/28

CPC分类号： G01R33/42 ,  A61B5/055 ,  A61B2562/182 ,  G01R33/0052 ,  G01R33/28 ,  G01R33/422 ,  G01R33/48 ,  H05K9/00

摘要： The present invention provides, in a magnetic resonance imaging device (MRD) comprising (a) a main longitudinal axis with a distal and proximal ends; (b) an open bore extended along the axis and terminated by an aperture located in the proximal end; and (c) a closure assembly which is shaped to fit the aperture; an RF shielding conduit (RFSC), having apertures shaped to permit passage of medical equipment tubing from the external environment of the MRD to inner space of the bore, affixed to the closure assembly, wherein the conduit is characterized by a length (l) and width (w), l:w ratio is greater than a predefined value n, thereby providing RF shielding.