公开(公告)号：US10823794B2

公开(公告)日：2020-11-03

申请号：US16195673

申请日：2018-11-19

Applicant: ViewRay Technologies, Inc.

Inventor： Shmaryu M. Shvartsman ,  Gordon D. Demeester ,  John L. Patrick ,  James F. Dempsey

IPC: G01R33/38 ,  G01R33/385 ,  G01R33/48 ,  G01R33/421 ,  A61N5/10

Abstract: Gradient coil assemblies for horizontal magnetic resonance imaging systems (MRIs) and methods of their manufacture. Some embodiments may be used with open MRIs and can be used with an instrument placed in the gap of the MRI. In general, concentrations of conductors or radially oriented conductors may be moved away from the gap of the MRI so as to reduce eddy currents that may be induced in any instrument placed within the gap. Systems for directly cooling primary gradient and shield coils may be utilized and various coil supporting structures may be used to assist in coil alignment or to facilitate use of an instrument in the MRI gap.

公开(公告)号：US20160356869A1

公开(公告)日：2016-12-08

申请号：US15242452

申请日：2016-08-19

Applicant: ViewRay Technologies, Inc.

Inventor： James F. Dempsey ,  John L. Patrick ,  Shmaryu M. Shvartsman ,  Gordon D. Demeester

IPC: G01R33/38 ,  G01R33/48 ,  A61B5/055 ,  G01R33/385

Abstract: A magnetic resonance imaging (MRI) system includes a split magnet system having a pair of MRI magnet housings separated by gap. A pair of main MRI magnets are disposed within respective MRI magnet housings. A plurality of buttress assemblies are attached to the MRI magnet housings. Some or all of the buttress assemblies are provided with removable connections to the MRI magnet housings. This allows for partial disassembly of the MRI system for improved transport and maneuverability for relocating the MRI system. The MRI system can include a gantry in the gap for supporting a radiation therapy system. Also, the removably buttress assemblies can be used for housing conduits, such as electrical and fluid conduits, between the pair of MRI magnet housings.

Abstract translation: 磁共振成像（MRI）系统包括具有由间隙隔开的一对MRI磁体壳体的分裂磁体系统。 一对主磁共振磁铁磁铁设置在相应的磁共振磁体外壳内。 多个支撑组件附接到MRI磁体壳体。 部分或全部支撑组件设置有与磁共振磁体外壳的可拆卸连接。 这允许MRI系统的部分拆卸以改善用于重新定位MRI系统的运输和机动性。 MRI系统可以包括用于支撑放射治疗系统的间隙中的台架。 此外，可移除的支撑组件可以用于在一对MRI磁体壳体之间的壳体导管，例如电气和流体导管。

公开(公告)号：US10571536B2

公开(公告)日：2020-02-25

申请号：US15242452

申请日：2016-08-19

Applicant: ViewRay Technologies, Inc.

Inventor： James F. Dempsey ,  John L. Patrick ,  Shmaryu M. Shvartsman ,  Gordon D. Demeester

IPC: G01R33/38 ,  G01R33/48 ,  A61B5/055 ,  G01R33/385 ,  A61N5/10

Abstract: A magnetic resonance imaging (MRI) system includes a split magnet system having a pair of MRI magnet housings separated by gap. A pair of main MRI magnets are disposed within respective MRI magnet housings. A plurality of buttress assemblies are attached to the MRI magnet housings. Some or all of the buttress assemblies are provided with removable connections to the MRI magnet housings. This allows for partial disassembly of the MRI system for improved transport and maneuverability for relocating the MRI system. The MRI system can include a gantry in the gap for supporting a radiation therapy system. Also, the removably buttress assemblies can be used for housing conduits, such as electrical and fluid conduits, between the pair of MRI magnet housings.

公开(公告)号：US10132888B2

公开(公告)日：2018-11-20

申请号：US14550464

申请日：2014-11-21

Applicant: VIEWRAY TECHNOLOGIES, INC.

Inventor： Shmaryu M. Shvartsman ,  Gordon D. Demeester ,  John L. Patrick ,  James F. Dempsey

IPC: G01R33/38 ,  G01R33/385 ,  G01R33/421 ,  G01R33/48 ,  A61N5/10

Abstract: Gradient coil assemblies for horizontal magnetic resonance imaging systems (MRIs) and methods of their manufacture. Some embodiments may be used with open MRIs and can be used with an instrument placed in the gap of the MRI. In general, concentrations of conductors or radially oriented conductors may be moved away from the gap of the MRI so as to reduce eddy currents that may be induced in any instrument placed within the gap. Systems for directly cooling primary gradient and shield coils may be utilized and various coil supporting structures may be used to assist in coil alignment or to facilitate use of an instrument in the MRI gap.

公开(公告)号：US10463883B2

公开(公告)日：2019-11-05

申请号：US15242449

申请日：2016-08-19

Applicant: ViewRay Technologies, Inc.

Inventor： Shmaryu M. Shvartsman ,  Gordon D. Demeester ,  James F. Dempsey ,  John Lester Patrick

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

Abstract: 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.

公开(公告)号：US20170014644A1

公开(公告)日：2017-01-19

申请号：US15242449

申请日：2016-08-19

Applicant: ViewRay Technologies, Inc.

Inventor： SHMARYU M. SHVARTSMAN ,  Gordon D. Demeester ,  James F. Dempsey ,  John Lester Patrick

IPC: A61N5/10 ,  G01R33/48 ,  G01R33/421 ,  A61B5/055 ,  G01R33/38

Abstract: 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.

Abstract translation: 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。