公开(公告)号：US12270873B2

公开(公告)日：2025-04-08

申请号：US17344825

申请日：2021-06-10

Applicant: ViewRay Systems, 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.

公开(公告)号：US12090343B2

公开(公告)日：2024-09-17

申请号：US17346109

申请日：2021-06-11

Applicant: ViewRay Systems, Inc.

Inventor： James F. Dempsey

IPC: A61N5/10 ,  A61B5/00 ,  A61B5/055 ,  G01R33/50

CPC classification number: A61N5/1064 ,  A61B5/0036 ,  A61B5/055 ,  A61B5/4836 ,  A61B5/4848 ,  A61B5/4878 ,  G01R33/50 ,  A61N5/1048 ,  A61N2005/1055 ,  A61N5/1071

Abstract: Edema in tissue of a patient undergoing a course of radiation therapy or treatment can be estimated based on one or more MRI measurements used to measure changes in fluid content of various tissues. A correlation between observed changes in edema and one or more delivered fractions of radiation can be used to drive one or more clinical actions. Methods, systems, articles of manufacture, and the like are described.

公开(公告)号：US20250012879A1

公开(公告)日：2025-01-09

申请号：US18731981

申请日：2024-06-03

Applicant: ViewRay Systems, Inc.

Inventor： James F. Dempsey ,  Massimo Dal Forno ,  Shmaryu M. Shvartsman ,  David L. Rayner

IPC: G01R33/381 ,  A61B5/055 ,  G01R33/34 ,  G01R33/38

Abstract: A magnetic resonance imaging (MRI) system having a resistive, solenoidal electromagnet for whole-body MRI may include ferromagnetic material within an envelope of the electromagnet. The system can be configured to have a field strength of at least 0.05 Tesla and its main electromagnetic field can be generated by layers of conductors instead of bundles. Certain electromagnet designs may be fabricated using non-metallic formers, such as fiberglass, and can be constructed to form a rigid object with the layers of conductors by fixing all together with an epoxy. The electromagnet may be configured to have two separated halves, which may be held apart by a fixation structure such as carbon fiber. The power supply for certain electromagnets herein may have current fluctuations, at frequencies of 180 Hz or above, of at least one part per ten thousand without requiring an additional current filter.

公开(公告)号：US12017090B2

公开(公告)日：2024-06-25

申请号：US17832417

申请日：2022-06-03

Applicant: ViewRay Systems, Inc.

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

IPC: A61N5/10

CPC classification number: A61N5/1039 ,  A61N5/1031 ,  A61N5/1038 ,  A61N5/1049 ,  A61N5/1067 ,  A61N5/1071 ,  A61N5/1081 ,  A61N2005/1055 ,  A61N2005/1061 ,  A61N2005/1087 ,  A61N2005/109 ,  A61N2005/1094

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：US20240416148A1

公开(公告)日：2024-12-19

申请号：US18820018

申请日：2024-08-29

Applicant: ViewRay Systems, Inc.

Inventor： James F. Dempsey ,  Iwan Kawrykow

IPC: A61N5/10 ,  A61B5/055 ,  G01R33/385 ,  G01R33/50

Abstract: Systems, methods, and computer software relating to gating using non-parallel imaging planes, determining accumulated dose to tissues during radiotherapy with actual beam delivery information, stopping/adjusting/reoptimizing therapy based on such accumulated doses and the generation and use of prognostic motion models and prognostic-motion adapted radiation treatment plans are disclosed.

公开(公告)号：US12105166B2

公开(公告)日：2024-10-01

申请号：US17948428

申请日：2022-09-20

Applicant: ViewRay Systems, Inc.

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

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

CPC classification number: G01R33/28 ,  G01R33/3806 ,  G01R33/42 ,  G01R33/421 ,  G01R33/4808 ,  A61N5/1039 ,  A61N5/1049 ,  A61N2005/1055 ,  A61N5/1081 ,  A61N2005/1088 ,  A61N2005/1089 ,  A61N2005/1094

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

公开(公告)号：US20240337717A1

公开(公告)日：2024-10-10

申请号：US18491426

申请日：2023-10-20

Applicant: ViewRay Systems, Inc.

Inventor： James F. Dempsey ,  Iwan Kawrykow

IPC: G01R33/56 ,  A61B5/055 ,  G06T7/00 ,  G06T7/11

CPC classification number: G01R33/5608 ,  A61B5/055 ,  G01R33/5602 ,  G06T7/0012 ,  G06T7/11 ,  G06T2207/10088 ,  G06T2207/30008

Abstract: Disclosed are systems, computer software, and methods for generating a relative electron density map (RED) from a magnetic resonance imaging (MRI) scan. This can include obtaining an MRI scan of a portion of a patient and segmenting a first region and a second region in the MRI scan. A RED map can then be generated from the MRI scan by assigning a first RED to the first region, assigning a second RED to the second region, and assigning REDs to unsegmented regions in the MRI scan based on intensities in the MRI scan.

公开(公告)号：US20240310457A1

公开(公告)日：2024-09-19

申请号：US18540666

申请日：2023-12-14

Applicant: ViewRay Systems, Inc.

Inventor： James F. Dempsey

IPC: G01R33/00 ,  A61B5/055 ,  A61N5/10 ,  G01R33/28 ,  G01R33/38 ,  G01R33/381 ,  G01R33/3815 ,  G01R33/385 ,  G01R33/48 ,  G01R33/483 ,  G01R33/563 ,  G01R33/565

CPC classification number: G01R33/0023 ,  A61B5/055 ,  A61N5/1049 ,  G01R33/0017 ,  G01R33/287 ,  G01R33/3815 ,  G01R33/385 ,  G01R33/48 ,  A61N2005/1055 ,  G01R33/3806 ,  G01R33/381 ,  G01R33/4808 ,  G01R33/4835 ,  G01R33/56325 ,  G01R33/56527 ,  G01R33/56536

Abstract: Improved magnetic resonance imaging systems, methods and software are described including a low field strength main magnet, a gradient coil assembly, an RF coil system, and a control system configured for the acquisition and processing of magnetic resonance imaging data from a patient while utilizing a sparse sampling imaging technique.