公开(公告)号：US20210162238A1

公开(公告)日：2021-06-03

申请号：US17085938

申请日：2020-10-30

Applicant: VIEWRAY TECHNOLOGIES, INC.

Inventor： Iwan Kawrykow ,  Eyad Kishawi

IPC: A61N5/10 ,  G01T1/185 ,  G01T1/29 ,  A61B5/055

Abstract: An ion chamber has a chamber having an interior volume. There is a first electrode and a second electrode in the chamber and separated by a gap. A collector electrode is positioned between the first electrode and the second electrode. The collector electrode is shaped to occlude a portion of the first electrode from the second electrode.

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：US10650532B2

公开(公告)日：2020-05-12

申请号：US16036701

申请日：2018-07-16

Applicant: ViewRay Technologies, Inc.

Inventor： Georgi Gerganov ,  Iwan Kawrykow

IPC: G06K9/36 ,  G06T7/20 ,  G06T7/30 ,  G06T7/32

Abstract: A phase correlation method (PCM) can be used for translational and/or rotational alignment of 3D medical images even in the presence of non-rigid deformations between first and second images of a registered volume of a patient.

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：US20190240511A1

公开(公告)日：2019-08-08

申请号：US16252305

申请日：2019-01-18

Applicant: ViewRay Technologies, Inc.

Inventor： Iwan KAWRYKOW ,  Eyad KISHAWI

IPC: A61N5/10 ,  A61B5/055 ,  G01T1/185 ,  G01T1/29

Abstract: An ion chamber has a chamber having an interior volume. There is a first electrode and a second electrode in the chamber and separated by a gap. A collector electrode is positioned between the first electrode and the second electrode. The collector electrode is shaped to occlude a portion of the first electrode from the second electrode.

公开(公告)号：US20190219650A1

公开(公告)日：2019-07-18

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

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.

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.