公开(公告)号：US20170265290A1

公开(公告)日：2017-09-14

申请号：US15450666

申请日：2017-03-06

Applicant: ViewRay Technologies, Inc.

Inventor： SHMARYU M. SHVARTSMAN ,  James F. Dempsey

IPC: H05H7/04 ,  H05H7/14 ,  H05H9/00

CPC classification number: H05H7/04 ,  H01J41/12 ,  H05H7/14 ,  H05H9/00

Abstract: A system has a linear accelerator, ion pump and a compensating magnet. The ion pump includes an ion pump magnet position, an ion pump magnet shape, an ion pump magnet orientation, and an ion pump magnet magnetic field profile. The compensating magnet has a position, a shape, an orientation, and a magnetic field profile, where at least one of the position, shape, orientation, and magnetic field profile of the compensating magnet reduce at least one component of a magnetic field in the linear accelerator resulting from the ion pump magnet.

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。