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    Radio frequency transmit coil for magnetic resonance imaging system
    1.
    发明授权
    Radio frequency transmit coil for magnetic resonance imaging system 有权
    用于磁共振成像系统的射频发射线圈

    公开(公告)号：US09404983B2

    公开(公告)日：2016-08-02

    申请号：US13796784

    申请日：2013-03-12

    Applicant: ViewRay, Incorporated

    Inventor： James F. Dempsey ,  Thomas Chmielewski

    IPC: G01R33/34 ,  G01R33/48

    CPC classification number: G01R33/34092 ,  G01R33/34076 ,  G01R33/4808 ,  G01R33/481 ,  G01R33/4812

    Abstract: A radio frequency coil is disclosed that is suitable for use with a magnetic resonance imaging apparatus. The radio frequency coil comprises first and second conductive loops connected electrically to each other by a plurality of conductive rungs. The conductive rungs each include a section that is relatively thin that will result in less attenuation to a radiation beam than other thicker sections of the rungs. Insulating regions are also disposed in areas of the radio frequency coil that are bound by adjacent rungs and the conductive loops. Portions of the insulating regions can be configured to provide a substantially similar amount of attenuation to the radiation beam as the relatively thin sections of the conductive rungs.

    Abstract translation: 公开了适用于磁共振成像装置的射频线圈。 射频线圈包括通过多个导电梯级彼此电连接的第一和第二导电回路。 导电梯级各自包括相对较薄的部分，这将导致比梯级的其它较厚部分对辐射束的衰减更少。 绝缘区域也布置在由相邻梯级和导电环路束缚的射频线圈的区域中。 绝缘区域的一部分可以被配置为提供与导电梯级的较薄部分相当的辐射束衰减量。

    Systems And Methods For Isotopic Source External Beam Radiotherapy
    2.
    发明申请
    Systems And Methods For Isotopic Source External Beam Radiotherapy 审中-公开
    同位素源外束放射治疗系统与方法

    公开(公告)号：US20150165233A1

    公开(公告)日：2015-06-18

    申请号：US14617652

    申请日：2015-02-09

    Applicant: ViewRay Incorporated

    Inventor： James F. Dempsey ,  Iwan Kawrykow

    IPC: A61N5/10

    CPC classification number: A61N5/1031 ,  A61N5/1036 ,  A61N5/1045 ,  A61N5/1071 ,  A61N5/1077

    Abstract: The subject matter described herein provides methods for developing an IMRT treatment plan for a radiotherapy system. In one aspect, the method can include providing initial treatment parameters. These parameters can include a number of isotopic beams, a transmission angle for each beam, a prescribed dose for a target, and dose volume histogram constraints. The method can further include determining an initial fluence map including one or more beamlets. The initial fluence map can specify a fluence value for each beamlet. The method can further include determining a delivery sequence for the fluence values in the initial fluence map. The delivery sequence can include one or more apertures formed by the leaves of a collimator. These apertures can have a specified size constrained to substantially less than a maximum size associated with the collimator, when the isotopic beam is near a critical structure. Related apparatus and systems are also described.

    Abstract translation: 本文所述的主题提供了用于开发用于放射治疗系统的IMRT治疗计划的方法。 在一个方面，该方法可以包括提供初始治疗参数。 这些参数可以包括多个同位素束，每个束的传播角，目标的规定剂量以及剂量体积直方图约束。 该方法还可以包括确定包括一个或多个子束的初始注量图。 初始注量图可以为每个子束指定注量值。 该方法还可以包括确定初始注量图中的能量密度值的递送序列。 递送顺序可以包括由准直器的叶形成的一个或多个孔。 当同位素束接近临界结构时，这些孔可以具有被限制为基本上小于与准直器相关联的最大尺寸的规定尺寸。 还描述了相关装置和系统。

    Radio Frequency Transmit Coil For Magnetic Resonance Imaging System
    3.
    发明申请
    Radio Frequency Transmit Coil For Magnetic Resonance Imaging System 有权
    射频发射线圈用于磁共振成像系统

    公开(公告)号：US20140266206A1

    公开(公告)日：2014-09-18

    申请号：US13796784

    申请日：2013-03-12

    Applicant: VIEWRAY, INCORPORATED

    Inventor： James F. Dempsey ,  Thomas Chmielewski

    IPC: G01R33/34

    CPC classification number: G01R33/34092 ,  G01R33/34076 ,  G01R33/4808 ,  G01R33/481 ,  G01R33/4812

    Abstract: A radio frequency coil is disclosed that is suitable for use with a magnetic resonance imaging apparatus. The radio frequency coil comprises first and second conductive loops connected electrically to each other by a plurality of conductive rungs. The conductive rungs each include a section that is relatively thin that will result in less attenuation to a radiation beam than other thicker sections of the rungs. Insulating regions are also disposed in areas of the radio frequency coil that are bound by adjacent rungs and the conductive loops. Portions of the insulating regions can be configured to provide a substantially similar amount of attenuation to the radiation beam as the relatively thin sections of the conductive rungs.

    Abstract translation: 公开了适用于磁共振成像装置的射频线圈。 射频线圈包括通过多个导电梯级彼此电连接的第一和第二导电回路。 导电梯级各自包括相对较薄的部分，这将导致比梯级的其它较厚部分对辐射束的衰减更少。 绝缘区域也布置在由相邻梯级和导电环路束缚的射频线圈的区域中。 绝缘区域的一部分可以被配置为提供与导电梯级的较薄部分相当的辐射束衰减量。

    Systems and methods for improved radioisotopic dose calculation and delivery
    5.
    发明授权
    Systems and methods for improved radioisotopic dose calculation and delivery 有权
    改进的放射性同位素剂量计算和递送的系统和方法

    公开(公告)号：US09289626B2

    公开(公告)日：2016-03-22

    申请号：US13801835

    申请日：2013-03-13

    Applicant: ViewRay Incorporated

    Inventor： Iwan Kawrakow ,  James F. Dempsey

    IPC: G01D18/00 ,  A61N5/10

    CPC classification number: A61N5/1031 ,  A61N5/1045 ,  A61N5/1075 ,  A61N2005/1034 ,  A61N2005/1076

    Abstract: Disclosed herein are methods including calibrating a radiotherapy machine to identify an effective radiation source size of a radiation source contained within the radiotherapy machine, the radiation source having a nominal radiation source size, to improve accuracy of a predicted dose profile for one or more radiation beams from the radiation source to further improve accuracy of radiation dose calculation and treatment delivery.

    Abstract translation: 这里公开的方法包括校准放射治疗机器以识别包含在放射治疗机器内的辐射源的有效辐射源尺寸，辐射源具有标称辐射源尺寸，以提高一个或多个辐射束的预测剂量分布的精度 从辐射源进一步提高辐射剂量计算和治疗传递的准确性。

    Self-Shielded Split Gradient Coil
    6.
    发明申请
    Self-Shielded Split Gradient Coil 审中-公开
    自屏蔽分层梯度线圈

    公开(公告)号：US20150077118A1

    公开(公告)日：2015-03-19

    申请号：US14550464

    申请日：2014-11-21

    Applicant: ViewRay Incorporated

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

    IPC: G01R33/38 ,  G01R33/385

    CPC classification number: G01R33/3806 ,  A61N2005/1055 ,  G01R33/385 ,  G01R33/3856 ,  G01R33/3858 ,  G01R33/4215 ,  G01R33/4808

    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.

    Abstract translation: 用于水平磁共振成像系统（MRI）的梯度线圈组件及其制造方法。 一些实施例可以与开放MRI一起使用，并且可以与置于MRI间隙中的器械一起使用。 通常，导体或径向取向的导体的浓度可以远离MRI的间隙移动，以便减少可能在放置在间隙内的任何仪器中引起的涡流。 可以使用用于直接冷却主梯度和屏蔽线圈的系统，并且可以使用各种线圈支撑结构来辅助线圈对准或便于在MRI间隙中使用仪器。

    Method And Apparatus For Shielding A Linear Accelerator And A Magnetic Resonance Imaging Device From Each Other
    7.
    发明申请
    Method And Apparatus For Shielding A Linear Accelerator And A Magnetic Resonance Imaging Device From Each Other 有权
    用于屏蔽线性加速器和磁共振成像装置的方法和装置

    公开(公告)号：US20150065860A1

    公开(公告)日：2015-03-05

    申请号：US14481619

    申请日：2014-09-09

    Applicant: ViewRay Incorporated

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

    IPC: A61N5/10 ,  G01R33/28 ,  A61B5/055 ,  G01R33/42

    CPC classification number: 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

    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。

    Systems and methods for isotopic source external beam radiotherapy
    8.
    发明授权
    Systems and methods for isotopic source external beam radiotherapy 有权
    同位素源外束放射治疗系统与方法

    公开(公告)号：US08952346B2

    公开(公告)日：2015-02-10

    申请号：US13830794

    申请日：2013-03-14

    Applicant: ViewRay, Incorporated

    Inventor： James F. Dempsey ,  Iwan Kawrykow

    IPC: G02B5/00 ,  G21K1/00 ,  H01J1/52 ,  H01J3/00 ,  H01J5/18 ,  H01J29/46 ,  A61N5/10

    CPC classification number: A61N5/1031 ,  A61N5/1036 ,  A61N5/1045 ,  A61N5/1071 ,  A61N5/1077

    Abstract: The subject matter described herein provides methods for developing an IMRT treatment plan for a radiotherapy system. In one aspect, the method can include providing initial treatment parameters. These parameters can include a number of isotopic beams, a transmission angle for each beam, a prescribed dose for a target, and dose volume histogram constraints. The method can further include determining an initial fluence map including one or more beamlets. The initial fluence map can specify a fluence value for each beamlet. The method can further include determining a delivery sequence for the fluence values in the initial fluence map. The delivery sequence can include one or more apertures formed by the leaves of a collimator. These apertures can have a specified size constrained to substantially less than a maximum size associated with the collimator, when the isotopic beam is near a critical structure. Related apparatus and systems are also described.

    Abstract translation: 本文所述的主题提供了用于开发用于放射治疗系统的IMRT治疗计划的方法。 在一个方面，该方法可以包括提供初始治疗参数。 这些参数可以包括多个同位素束，每个束的传播角，目标的规定剂量以及剂量体积直方图约束。 该方法还可以包括确定包括一个或多个子束的初始注量图。 初始注量图可以为每个子束指定注量值。 该方法还可以包括确定初始注量图中的能量密度值的递送序列。 递送顺序可以包括由准直器的叶形成的一个或多个孔。 当同位素束接近临界结构时，这些孔可以具有被限制为基本上小于与准直器相关联的最大尺寸的规定尺寸。 还描述了相关装置和系统。

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