公开(公告)号：US20210220676A1

公开(公告)日：2021-07-22

申请号：US17227155

申请日：2021-04-09

Applicant: ViewRay Technologies, Inc.

Inventor： Iwan Kawrykow ,  Thomas Chmielewski ,  James F. Dempsey

IPC: A61N5/10 ,  A61B6/04 ,  G21K1/04 ,  A61B6/03 ,  A61B6/00

Abstract: A system including a diagnostic-quality CT scanner for imaging a patient, the diagnostic-quality CT scanner having an imaging isocenter and a radiation therapy device positioned adjacent the diagnostic-quality CT scanner, the radiation therapy device including a gantry carrying a radiation therapy beam source and having a radiation therapy isocenter separate from the imaging isocenter of the diagnostic-quality CT scanner. The system including a couch configured to position the patient for imaging and for radiation therapy by translating the patient between the diagnostic quality CT scanner and the radiation therapy device.

公开(公告)号：US20210146160A1

公开(公告)日：2021-05-20

申请号：US17143885

申请日：2021-01-07

Applicant: ViewRay Technologies, Inc.

Inventor： James F. Dempsey ,  Iwan Kawrykow

IPC: A61N5/10

Abstract: Magnetic resonance (MR) guided radiation therapy (MRgRT) enables control over the delivery of radiation based on patient motion indicated by MR imaging (MRI) images captured during radiation delivery. A method for MRgRT includes: simultaneously using one or more radiation therapy heads to deliver radiation and an MRI system to perform MRI; using a processor to determine whether one or more gates are triggered based on at least a portion of MRI images captured during the delivery of radiation; and in response to determining that one or more gates are triggered based on at least a portion of the MRI images captured during the delivery of radiation, suspending the delivery of radiation.

公开(公告)号：US10825209B2

公开(公告)日：2020-11-03

申请号：US16105848

申请日：2018-08-20

Applicant: ViewRay Technologies, Inc.

Inventor： James F. Dempsey ,  Qingguo Zeng ,  Roger Nana ,  John Lester Patrick ,  Timothy P. Eagan ,  Shmaryu M. Shvartsman

IPC: G06T11/00 ,  G01R33/48 ,  G01R33/56 ,  G01R33/561 ,  G06T7/00

Abstract: Systems and methods for tomographic reconstruction of an image include systems and methods for producing images from k-space data. A k-space data set of an imaged object is acquired using know k-space data acquisition systems and methods. A portion of the k-space data set is sampled so as to collect some portion of the k-space data. An image is then reconstructed from the collected portion of the k-space data set according to a convex optimization model.

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：US10413751B2

公开(公告)日：2019-09-17

申请号：US15445832

申请日：2017-02-28

Applicant: ViewRay Technologies, Inc.

Inventor： James F. Dempsey ,  Shmaryu M. Shvartsman ,  Iwan Kawrykow

IPC: A61N5/10

Abstract: Particle radiation therapy and planning utilizing magnetic resonance imaging (MRI) data. Radiation therapy prescription information and patient MRI data can be received and a radiation therapy treatment plan can be determined for use with a particle beam. The treatment plan can utilize the radiation therapy prescription information and the patient MRI data to account for interaction properties of soft tissues in the patient through which the particle beam passes. Patient MRI data may be received from a magnetic resonance imaging system integrated with the particle radiation therapy system. MRI data acquired during treatment may also be utilized to modify or optimize the particle radiation therapy treatment.

公开(公告)号：US20190217126A1

公开(公告)日：2019-07-18

申请号：US16362094

申请日：2019-03-22

Applicant: ViewRay Technologies, Inc.

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

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

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 MM 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 MM magnets. RF shielding can be provided for shielding the MRI system from RF radiation from the linac.

公开(公告)号：US20190159845A1

公开(公告)日：2019-05-30

申请号：US16049706

申请日：2018-07-30

Applicant: ViewRay Technologies, Inc.

Inventor： James F. Dempsey

IPC: A61B34/00 ,  A61B90/00 ,  A61N5/10

Abstract: A surgical guidance system is disclosed that allows for real-time imaging and patient monitoring during a surgical procedure. The system can include an MRI system for generating real-time images of the patient while surgery is being performed. Prior to surgery, a surgical plan can be created using a planning interface. A control unit receives the real-time image data and the surgical plan, and monitors the image data based on parameters included in the surgical plan. The control-unit monitoring occurs in real-time while the surgical procedure is being performed. The control unit can detect deviations from the surgical plan and/or high-risk patient conditions and instruct an alert unit to issue an alert based on the detected conditions.

公开(公告)号：US20190012814A1

公开(公告)日：2019-01-10

申请号：US16105848

申请日：2018-08-20

Applicant: ViewRay Technologies, Inc.

Inventor： James F. Dempsey ,  Qingguo Zeng ,  Roger Nana ,  John Lester Patrick ,  Timothy P. Eagan ,  Shmaryu M. Shvartsman

IPC: G06T11/00 ,  G06T7/00 ,  G01R33/48 ,  G01R33/561 ,  G01R33/56

Abstract: Systems and methods for tomographic reconstruction of an image include systems and methods for producing images from k-space data. A k-space data set of an imaged object is acquired using know k-space data acquisition systems and methods. A portion of the k-space data set is sampled so as to collect some portion of the k-space data. An image is then reconstructed from the collected portion of the k-space data set according to a convex optimization model.

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：US20170052236A1

公开(公告)日：2017-02-23

申请号：US15224264

申请日：2016-07-29

Applicant: ViewRay Technologies, Inc.

Inventor： James F. Dempsey ,  Thomas Chmielewski

IPC: G01R33/34 ,  G01R33/48

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，这将导致对辐射束的衰减比梯级的其它较厚部分更小的衰减。 绝缘区域也设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相对薄的部分相当的辐射束的衰减量。