Patents Assigned to Varian Medical Systems, Inc.
  • Patent number: 10417390
    Abstract: Example methods and systems for determining a treatment plan for a radiotherapy treatment system to deliver radiotherapy treatment to a patient are disclosed. In one embodiment, the method may comprise performing a particle transport simulation to initiate a first set of particle histories and a second set of particle histories from a radiation source of the radiotherapy treatment system to a treatment volume with multiple voxels representing an anatomy of the patient. The method may also comprise determining first cumulative costs associated with respective particle histories in the first set and second cumulative costs associated with respective particle histories in the second set. The method may further comprise selecting the first set or second set based on the first cumulative costs and second cumulative costs and determining the treatment plan based on the selected first set or second set.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: September 17, 2019
    Assignee: VARIAN MEDICAL SYSTEMS, INC.
    Inventors: Michelle Svatos, Corey Zankowski
  • Patent number: 10406382
    Abstract: A radiation system includes a radiation source providing therapeutic radiation, a first gantry supporting a second gantry carrying the radiation source. The first gantry is rotatable about a first axis passing through an isocenter, thereby allowing the radiation source to aim therapeutic radiation at a target volume from a plurality of locations in a first plane. The second gantry carrying the radiation source is rotatable about a second axis passing through the isocenter non-parallel with the first axis, thereby allowing the radiation source to aim therapeutic radiation at the target volume from a plurality of locations in a second plane non-coplanar with the first plane.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: September 10, 2019
    Assignee: Varian Medical Systems, Inc.
    Inventors: David Humber, Josh Star-Lack, Stanley Mansfield, Ross Hannibal
  • Patent number: 10403413
    Abstract: In a beam filter assembly, a base filter is employed to modify a beam quality of a radiation beam of a base energy level and a first filter slice is stacked with the base filter to modify a beam quality of a radiation beam of a first energy level higher than the base energy level. In a beam filter positioning device, a base stage carries a base filter and a first stage carries a filter slice. The base stage is provided with a first engagement site and a second engagement site. The first stage is provided with a first engagement site, a second engagement site, and an open port. The first stage and the base stage are each independently movable relative to the beamline. The first stage is engageable with the base stage when at least one of the first and second engagement sites of the first stage is aligned with at least one of the first and second engagement sites of the base stage, and is further movable with the base stage in unison when engaged.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: September 3, 2019
    Assignee: Varian Medical Systems, Inc.
    Inventors: Christopher Brown, Rachel Rieger, Dusan Baic, Sean Kelley
  • Patent number: 10390787
    Abstract: An apparatus includes input(s) for obtaining a first image and for obtaining a plurality of image parameters that includes at least a first image parameter and a second image parameter; a simulated image creation module configured for computing a plurality of simulated images based on the first image and the plurality of image parameters, the plurality of simulated images having at least a first simulated image computed based on the first image parameter, and a second simulated image computed based on the second image parameter, wherein the first simulated image has a first image quality, the second simulated image has a second image quality, and the first image quality is different from the second image quality; an image registration module configured for performing a plurality of image registrations using the simulated images; and a non-transitory medium configured for storing results from the act of performing the plurality of image registrations.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: August 27, 2019
    Assignee: Varian Medical Systems, Inc.
    Inventors: Josh M. Star-Lack, Michelle M. Svatos
  • Patent number: 10366859
    Abstract: An apparatus for attachment to a component of a microwave device, includes: a cage; a shield within the cage, wherein the shield is in a form of a container, at least a majority of the shield spaced away from an interior wall of the cage; and a connector at the cage, wherein the connector is configured to connect to a cable connection, and wherein the connector is electrically connected to two terminals within the shield. An apparatus for coupling to an input connection of an electron gun, the input connection having a heater terminal and a cathode terminal, the apparatus comprising: a connector having a first configured to attach to a cable, and a second end configured to connect to the input connection of the electron gun; and wherein the connector comprises an opening configured to receive the heater terminal of the input connection of the electron gun.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: July 30, 2019
    Assignee: Varian Medical Systems, Inc.
    Inventors: Mark E. Trail, Rudolf H. Potter
  • Patent number: 10342504
    Abstract: One example method for estimating scatter associated with a target object may include acquiring a set of original projection data that includes primary radiation and scattered radiation at one or more selected projection angles associated with the target object, generating a first set of estimated scatter data from the set of original projection data, generating reconstructed image data by performing a first pass reconstruction using the first set of estimated scatter data, and generating a set of reference scatter data associated with the target based on the reconstructed image data. The example method may also include generating a set of reference primary plus scatter data associated with the target object based on the reconstructed image data, generating a second set of estimated scatter data associated with the target object based on the set of reference primary plus scatter data, and generating perturbation data associated with the target object.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: July 9, 2019
    Assignee: VARIAN MEDICAL SYSTEMS, INC.
    Inventors: Josh Star-Lack, Mingshan Sun
  • Patent number: 10342997
    Abstract: System and method of dynamically presenting visual representations of a target volume in an anatomical context to an operator-user of a charged particle radiation therapy system. The visual representations are integrated as a part of a treatment console graphical user interface (GUI) and presented as a part of a holistic view of treatment information. The visual representations are digitally reconstructed radiographs (DRRs) constructed based on anatomical images captured before the therapy session, or alternatively during a treatment session using an imaging system attached to the radiation treatment system. In an online mode, the on-screen visual representations are rendered in synchronization with the irradiation delivery process.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: July 9, 2019
    Assignee: VARIAN MEDICAL SYSTEMS, INC.
    Inventors: Brian Spatola, Richard Kane
  • Patent number: 10332225
    Abstract: A method for implementing a radiation therapy knowledge exchange starts with searching a database of cases studies and selecting a case study. The selected case study is downloaded. The downloaded case study is applied to a medical case, wherein the downloaded case is applied using deformable image registration to deform reference images of the downloaded case to medical images of the medical case. After application of the downloaded case study, the medical case is uploaded to the network, wherein uploading the medical case allows at least the submitting clinician to download, review, and edit at least a portion of the medical case to create a reviewed medical case. Finally, the reviewed medical case is downloaded and applied to the medical case to create a final medical case.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: June 25, 2019
    Assignees: Varian Medical Systems International AG, Varian Medical Systems, Inc.
    Inventors: Burton Lang, Corey Zankowski, Ramin Baghaie
  • Patent number: 10334066
    Abstract: Embodiments of the present invention are directed to a method, system, and article of manufacture of a native notification center app that receive all types of push notifications. The push notification payload contains the URL to be launched when touched on the display of a mobile device and the custom data to be passed to the web application on launch. The push message sent to the notification center app and when the app is opened, which lists all the push notifications. When the user touches a notification, the URL in that notification can be launched in the browser and the custom data can be made available to the web application as parameters.
    Type: Grant
    Filed: July 23, 2014
    Date of Patent: June 25, 2019
    Assignee: Varian Medical Systems, Inc.
    Inventors: Kalyanaraman Balasubramaniam Krishnan, Nambi Lakshmi Narasimhan
  • Patent number: 10330798
    Abstract: In a method of making pixelated scintillators, a block of an amorphous scintillator material is divided into plural sections. The plural sections of the block are rejoined with plural first reflective septa to form an assembly. In the assembly, each of the plural first reflective septa separates two adjacent sections of the block. The assembly is then divided into plural sections in a way such that each of the plural sections of the block is divided into plural pixels. The plural sections of the assembly are rejoined with plural second reflective septa. Each of the plural second reflective septa separates two adjacent sections of the assembly, forming an array comprising plural rows and columns of pixels of the amorphous scintillator material. In the array, each pixel is separated from adjacent pixels by a portion of at least one of the plural first reflective septa and at least one of the second reflective septa.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: June 25, 2019
    Assignee: Varian Medical Systems, Inc.
    Inventors: Daniel Shedlock, Josh M. Star-Lack, Adam Wang
  • Patent number: 10327727
    Abstract: In accordance with at least some embodiments of the present disclosure, a process to estimate scattered radiation contained in x-ray projections for computed tomography (CT) reconstruction is provided. The process may construct an object model based on a plurality of projection images generated by CT scanning of an object using an x-ray radiation source and a detector panel. The process may construct a virtual radiation source based on the x-ray radiation source, and a virtual detector panel based on the detector panel. The process may perform a simulated CT scanning of the object model by simulating macroscopic behavior of particles being emitted from the virtual radiation source, passing through the object model, and being detected by the virtual detector panel. And the process may generate a simulated scatter image based on a first subset of particles scattered during the simulated CT scanning of the object model.
    Type: Grant
    Filed: May 12, 2017
    Date of Patent: June 25, 2019
    Assignee: VARIAN MEDICAL SYSTEMS, INC.
    Inventors: Alexander E. Maslowski, Adam Wang, Josh Star-Lack, Mingshan Sun, Todd Wareing
  • Patent number: 10322300
    Abstract: In a method of constructing a head shield for a radiation machine, the angular distribution of radiation propagating from a source and the angular function of thickness of a material in attenuating the radiation to a certain level of its original value are determined. Based on the angular distribution of radiation from the source and the angular function of thickness of the material, the thicknesses of the material at a plurality of angular locations around the source and distances from the source can be calculated for attenuating the radiation to or less than a predetermined threshold value. A shield around the source is constructed based on the calculated thicknesses of the material through iterative steps to ensure a cost-saving, weight-efficient, optimal solution.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: June 18, 2019
    Assignee: Varian Medical Systems, Inc.
    Inventors: HsinLu Hsu, Magdalena Constantin, Stuart Scollay
  • Patent number: 10307618
    Abstract: A radiation therapy system includes an accelerator and beam transport system that generates a beam of particles. The accelerator and beam transport system guides the beam on a path and into a nozzle that is operable for aiming the beam toward an object. The nozzle includes a scanning magnet operable for steering the beam toward different locations within the object, and also includes a beam energy adjuster configured to adjust the beam by, for example, placing different thicknesses of material in the path of the beam to affect the energies of the particles in the beam.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: June 4, 2019
    Assignee: Varian Medical Systems, Inc.
    Inventor: Stanley Mansfield
  • Patent number: 10293135
    Abstract: Systems and methods for treating a lung of a lung of a patient. One embodiment of a method comprises positioning a leadless marker in the lung of the patient relative to the target, and collecting position data of the marker. This method further comprises determining the location of the marker in an external reference frame outside the patient based on the collected position data, and providing an objective output in the external reference frame that is responsive to movement of the marker. The objective output is provided at a frequency (i.e., periodicity) that results in a clinically acceptable tracking error. In addition, the objective output can also be provided at least substantially contemporaneously with collecting the position data used to determine the location of the marker.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: May 21, 2019
    Assignee: VARIAN MEDICAL SYSTEMS, INC.
    Inventor: Fergus Quigley
  • Patent number: 10293185
    Abstract: In an irradiation method, an irradiation plan for irradiating a target volume in phases of motion is provided to a particle therapy system. The particle therapy system comprises a beam delivery device operable to scan a pencil beam of particles over the target volume. The irradiation plan comprises a first field for irradiating the target volume in a first phase of motion and a second field for irradiating the target volume in a second phase of motion. Motion of a tracking device or change of other physical measurement value is monitored and signals continuously indicating the current position of the tracking device or measurement value are provided to the particle therapy system. A pencil beam of particles is applied to the target volume according to the irradiation plan and signals from the tracking system continuously indicating current positions of the target volume. Dosage delivered to the target volume is monitored.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: May 21, 2019
    Assignee: Varian Medical Systems, Inc.
    Inventor: James R. Janssen
  • Patent number: 10286229
    Abstract: A radiation dose received by a patient from a radiation therapy system can be verified by acquiring a cine stream of image frames from an electronic portal imaging device (EPID) that is arranged to detect radiation exiting the patient during irradiation. The cine stream of EPID image frames can be processed in real-time to form exit images providing absolute dose measurements at the EPID (dose-to-water values), which is representative of the characteristics of the radiation received by the patient. Compliance with predetermined characteristics for the field can be determined during treatment by periodically comparing the absolute dose measurements with the predetermined characteristics, which can include a predicted total dose in the field after full treatment and/or a complete irradiation area outline (CIAO). The system operator can be alerted or the irradiation automatically stopped when non-compliance is detected.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: May 14, 2019
    Assignees: VARIAN MEDICAL SYSTEMS, INC., VARIAN MEDICAL SYSTEMS INTERNATIONAL AG
    Inventors: Christof Baltes, Todd Holmes
  • Patent number: 10269122
    Abstract: A method for medical image segmentation. The method includes accessing and updating a knowledge-base in accordance with embodiments of the present invention. The techniques include: receiving a medical image and computing a sparse landmark signature based on the medical image content. Next, a knowledge-base is searched for representative matches to form a base set, wherein the base set comprises a plurality of reference image sets. A portion of the plurality of reference image sets of the base set is deformed to generate mappings from the base set to the medical image set. Finally a weighted average segmentation for each structure of interest of the medical image set is determined.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: April 23, 2019
    Assignee: Varian Medical Systems, Inc.
    Inventor: Corey Zankowski
  • Patent number: 10258812
    Abstract: Disclosed are radiation treatment systems with enhanced control architectures that enable more complex treatment plans to be implemented, and radiation treatment systems with enhanced resistance to the effect of neutrons. An exemplary control architectures comprises: a digital packet network; a supervisor electrically coupled to the digital packet network and having a treatment plan; and a plurality of nodes, each node coupled to digital packet network and controlling one or more treatment-related components of the radiation treatment system; and wherein the supervisor periodically communicates control orders to the nodes over the digital packet network.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: April 16, 2019
    Assignee: Varian Medical Systems, Inc.
    Inventors: Andres Graf, Hanspeter Felix, Qingxiang Ke, Angi Ye
  • Patent number: 10252083
    Abstract: A high-energy radiation treatment system can comprise a laser-driven accelerator system, a patient monitoring system, and a control system. The laser-driven accelerator system, such as a laser-driven plasma accelerator or a laser-driven dielectric microstructure accelerator, can be constructed to irradiate a patient disposed on a patient support. The patient monitoring system can be configured to detect and track a location or movement of a treatment volume within the patient. The control system can be configured to control the laser-driven accelerator system responsively to the location or movement of the treatment volume. The system can also include a beam control system, which generates a magnetic field that can affect the radiation beam and/or secondary electrons produced by the irradiation beam. In some embodiments, the beam control system and the patient monitoring system can comprise a magnetic resonance imaging system.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: April 9, 2019
    Assignee: VARIAN MEDICAL SYSTEMS INC.
    Inventor: James E. Clayton
  • Publication number: 20190103869
    Abstract: A motion-enable device includes a mechanical switch and a capacitive sensor with a sensing region that is located adjacent to the mechanical switch. The mechanical switch enables a first signal when closed or actuated that indicates that the mechanical switch is in an active state. The capacitive sensor enables a second signal when a conductive object is disposed in the sensing region, where the second signal indicates that the capacitive sensor is in an active state. Enablement of operation of an apparatus depends on receipt of both the first signal and the second signal. The mechanical switch and the capacitive sensor act as the two separate switches required by functional safety requirements for a motion enable device. Because the sensing region of the capacitive sensor is adjacent to the mechanical switch, the first and second signals are generated when an operator actuates the mechanical switch with a single digit.
    Type: Application
    Filed: April 19, 2018
    Publication date: April 4, 2019
    Applicant: Varian Medical Systems, Inc.
    Inventors: Ross HANNIBAL, Wade CURTISS