Patents by Inventor Douglas Allen Barnett
Douglas Allen Barnett has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230338748Abstract: A method of beam angle optimization for an IMRT radiotherapy treatment includes providing a patient model having one or more regions of interest (ROIs), defining a delivery coordinate space (DCS), for each ROI, solving an adjoint transport to obtain an adjoint solution field from the ROI, for each vertex in the DCS, evaluating an adjoint photon fluence by performing ray tracing of the adjoint solution field, evaluating a dose of the ROI using the adjoint photon fluence, for each vertex in the DCS, evaluating a respective beam's eye view (BEV) score of each pixel of a BEV plane using the doses of the one or more ROIs, determining one or more BEV regions in the BEV plane based on the BEV scores, determining a BEV region connectivity manifold based on the BEV regions, and determining a set of IMRT fields based on the BEV region connectivity manifold.Type: ApplicationFiled: June 27, 2023Publication date: October 26, 2023Inventors: Santtu Ollila, Todd Arlin Wareing, John Morton McGhee, Douglas Allen Barnett, JR., Alexander Enrique Maslowski
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Publication number: 20230285773Abstract: Embodiments described herein provide for coupling Monte Carlo source modeling with deterministic dose calculations. An internal volumetric first scatter distributed source of a patient is determined using Monte Carlo simulations and ingested into one or more dosing algorithms. The dosing algorithms use the source model to determine a dose deposition.Type: ApplicationFiled: March 10, 2022Publication date: September 14, 2023Applicant: VARIAN MEDICAL SYSTEMS, INC.Inventors: Alexander Maslowski, Douglas Allen Barnett, Todd Wareing
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Publication number: 20230290465Abstract: Embodiments described herein provide for training an artificial intelligence model to boost dose depositions. The artificial intelligence model receives medical images and a dose deposition determined according to a first dose deposition model. The artificial intelligence model modifies the received dose deposition determined according to the first dose deposition model such that the dose deposition simulates a dose deposition determined by a second dose deposition model.Type: ApplicationFiled: March 10, 2022Publication date: September 14, 2023Applicant: Varian Medical Systems, Inc.Inventors: Alexander Maslowski, Douglas Allen Barnett, Todd Wareing
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Patent number: 11717701Abstract: A method of beam angle optimization for an IMRT radiotherapy treatment includes providing a patient model having one or more regions of interest (ROIs), defining a delivery coordinate space (DCS), for each ROI, solving an adjoint transport to obtain an adjoint solution field from the ROI, for each vertex in the DCS, evaluating an adjoint photon fluence by performing ray tracing of the adjoint solution field, evaluating a dose of the ROI using the adjoint photon fluence, for each vertex in the DCS, evaluating a respective beam's eye view (BEV) score of each pixel of a BEV plane using the doses of the one or more ROIs, determining one or more BEV regions in the BEV plane based on the BEV scores, determining a BEV region connectivity manifold based on the BEV regions, and determining a set of IMRT fields based on the BEV region connectivity manifold.Type: GrantFiled: September 27, 2019Date of Patent: August 8, 2023Assignees: SIEMENS HEALTHINEERS INTERNATIONAL AG, VARIAN MEDICAL SYSTEMS, INC.Inventors: Santtu Ollila, Todd Arlin Wareing, John Morton McGhee, Douglas Allen Barnett, Jr., Alexander Enrique Maslowski
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Publication number: 20230191150Abstract: These teachings provide for quickly yet accurately forming an influence matrix by generating the influence matrix via integration with a Monte Carlo particle transport simulation. The resultant influence matrix can then be utilized in an ordinary manner when optimizing a radiation treatment plan. By one approach, the foregoing comprises generating the influence matrix via integration with a Monte Carlo particle transport simulation on a particle-by-particle basis. For example, for each particle, these teachings can provide for identifying a spot to which the particle belongs and then adding a dose deposited by the particle during transport to an influence matrix element that corresponds to a spot to which the particle belongs and a voxel to where the dose was deposited.Type: ApplicationFiled: December 20, 2021Publication date: June 22, 2023Inventors: Petri Hirvonen, Matti Ropo, Douglas Allen Barnett, Timo K. Koponen
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Publication number: 20220339468Abstract: A method of trajectory optimization for radiotherapy treatment includes providing a patient model having one or more regions of interest (ROIs), defining a delivery coordinate space (DCS), for each ROI, solving an adjoint transport to obtain an adjoint solution field from the ROI, for each vertex in the DCS, evaluating an adjoint photon fluence by performing ray tracing of the adjoint solution field, evaluating a dose of the ROI using the adjoint photon fluence, for each vertex in the DCS, evaluating a respective beam's eye view (BEV) score of each pixel of a BEV plane using the doses of the one or more ROIs, determining one or more BEV regions in the BEV plane based on the BEV scores, determining a BEV region connectivity manifold based on the BEV regions, and determining one or more optimal treatment trajectories based on the BEV region connectivity manifold.Type: ApplicationFiled: June 28, 2022Publication date: October 27, 2022Inventors: Santtu Ollila, Todd Arlin Wareing, John Morton McGhee, Douglas Allen Barnett, JR., Alexander Enrique Maslowski
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Patent number: 11400313Abstract: A method of trajectory optimization for radiotherapy treatment includes providing a patient model having one or more regions of interest (ROIs), defining a delivery coordinate space (DCS), for each ROI, solving an adjoint transport to obtain an adjoint solution field from the ROI, for each vertex in the DCS, evaluating an adjoint photon fluence by performing ray tracing of the adjoint solution field, evaluating a dose of the ROI using the adjoint photon fluence, for each vertex in the DCS, evaluating a respective beam's eye view (BEV) score of each pixel of a BEV plane using the doses of the one or more ROIs, determining one or more BEV regions in the BEV plane based on the BEV scores, determining a BEV region connectivity manifold based on the BEV regions, and determining one or more optimal treatment trajectories based on the BEV region connectivity manifold.Type: GrantFiled: September 27, 2019Date of Patent: August 2, 2022Assignees: VARIAN MEDICAL SYSTEMS, INC., VARIAN MEDICAL SYSTEMS INTERNATIONAL AGInventors: Santtu Ollila, Todd Arlin Wareing, John Morton McGhee, Douglas Allen Barnett, Jr., Alexander Enrique Maslowski
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Publication number: 20200101322Abstract: A method of trajectory optimization for radiotherapy treatment includes providing a patient model having one or more regions of interest (ROIs), defining a delivery coordinate space (DCS), for each ROI, solving an adjoint transport to obtain an adjoint solution field from the ROI, for each vertex in the DCS, evaluating an adjoint photon fluence by performing ray tracing of the adjoint solution field, evaluating a dose of the ROI using the adjoint photon fluence, for each vertex in the DCS, evaluating a respective beam's eye view (BEV) score of each pixel of a BEV plane using the doses of the one or more ROIs, determining one or more BEV regions in the BEV plane based on the BEV scores, determining a BEV region connectivity manifold based on the BEV regions, and determining one or more optimal treatment trajectories based on the BEV region connectivity manifold.Type: ApplicationFiled: September 27, 2019Publication date: April 2, 2020Applicants: Varian Medical Systems International AG, Varian Medical Systems, Inc.Inventors: Santtu Ollila, Todd Arlin Wareing, John Morton McGhee, Douglas Allen Barnett, JR., Alexander Enrique Maslowski
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Publication number: 20200101325Abstract: A method of beam angle optimization for an IMRT radiotherapy treatment includes providing a patient model having one or more regions of interest (ROIs), defining a delivery coordinate space (DCS), for each ROI, solving an adjoint transport to obtain an adjoint solution field from the ROI, for each vertex in the DCS, evaluating an adjoint photon fluence by performing ray tracing of the adjoint solution field, evaluating a dose of the ROI using the adjoint photon fluence, for each vertex in the DCS, evaluating a respective beam's eye view (BEV) score of each pixel of a BEV plane using the doses of the one or more ROIs, determining one or more BEV regions in the BEV plane based on the BEV scores, determining a BEV region connectivity manifold based on the BEV regions, and determining a set of IMRT fields based on the BEV region connectivity manifold.Type: ApplicationFiled: September 27, 2019Publication date: April 2, 2020Applicants: Varian Medical Systems International AG, Varian Medical Systems, Inc.Inventors: Santtu Ollila, Todd Arlin Wareing, John Morton McGhee, Douglas Allen Barnett, JR., Alexander Enrique Maslowski
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Publication number: 20090063110Abstract: Brachytherapy dose attributable to a brachytherapy source is computed for portions of a patient treatment volume corresponding to a pathological target volume and critical structures. Patient image data is accessed to derive a material voxel array. Multiple computation grids are derived. Primary particle fluence is computed for each first grid element using a ray tracing process from which a primary dose and a first scattered particle source are derived. Scattered particle fluence of the first scattered particle source is derived for each second grid element from which a secondary dose is derived. Each first grid element corresponds to a plurality of second grid elements. Primary dose and scattered dose combine to provide total dose at specific volumes. Brachytherapy source models and non-anatomical body surface models may be applied as applicable.Type: ApplicationFiled: October 28, 2008Publication date: March 5, 2009Applicant: Transpire,Inc.Inventors: Gregory Alexander Failla, Douglas Allen Barnett, John Morton McGhee, Todd Arlin Wareing