Patents by Inventor Himanshu Bhat
Himanshu Bhat 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: 20230240552Abstract: Techniques are provided for operating an MR scanner that comprises gradient coils configured to generate a field gradient along coordinate axes of a coil coordinate system. The techniques include receiving limit values concerning the field gradient in the coil coordinate system and an MR scan protocol. Expected orientations of a logical coordinate system are then determined and, for each one, a compliant value for a timing parameter is determined and stored in a database. The MR scanner is controlled to carry out an MR scan, and afterwards the orientation is set to a first orientation. A first value for the timing parameter according to the first orientation is determined based on the data stored in the database, and the MR scanner is controlled to carry out a scan sequence according to the first orientation and the first value.Type: ApplicationFiled: February 1, 2023Publication date: August 3, 2023Applicant: Siemens Healthcare GmbHInventors: David Grodzki, Florian Maier, Axel Joachim Krafft, Waqas Majeed, Himanshu Bhat
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Patent number: 11574654Abstract: In various examples, recordings of gameplay sessions are enhanced by the application of special effects to relatively high(er) and/or low(er) interest durations of the gameplay sessions. Durations of relatively high(er) or low(er) predicted interest in a gameplay session are identified, for instance, based upon level of activity engaged in by a gamer during a particular gameplay session duration. Once identified, different variations of video characteristic(s) are applied to at least a portion of the identified durations for implementation during playback. The recordings may be generated and/or played back in real-time with a live gameplay session, or after completion of the gameplay session. Further, video data of the recordings themselves may be modified to include the special effects and/or indications of the durations and/or variations may be included in metadata and used for playback.Type: GrantFiled: November 15, 2021Date of Patent: February 7, 2023Assignee: NVIDIA CorporationInventors: Prabindh Sundareson, Prakash Yadav, Himanshu Bhat
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Patent number: 11493583Abstract: Embodiments provide a computer-implemented method for selecting thermal images for generating a temperature difference map through proton resonance frequency (PRF) thermometry, including: acquiring a set of baseline images prior to a thermal treatment of an organ of interest; identifying a subset of baseline images in a most stable motion state from the set of baseline images; averaging the subset of baseline images to generate a template image; determining an acceptance threshold based on an image similarity measure (ISM) between each of the set of baseline images and the template image; acquiring a set of thermal images during the thermal treatment; and selecting a subset of thermal images from the set of thermal images, wherein each of the subset of thermal images has the image similarity measure above the acceptance threshold.Type: GrantFiled: November 3, 2021Date of Patent: November 8, 2022Assignee: Siemens Healthcare GmbHInventors: Waqas Majeed, Himanshu Bhat, Axel Joachim Krafft
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Patent number: 11448716Abstract: The invention relates to a method for optimizing an MR imaging sequence with a plurality of sequence blocks where gradient requirements of logical gradients switched along axes including a read, slice, and phase axis are determined. Based on the requirements, a reference gradient is determined among the logical gradients having a longest minimum duration relative to remaining logical gradients within the sequence block during which the reference gradient is switched on. A scaling factor is determined for each of the logical gradients. The scaling factors for the logical gradient factors are updated taking into account the determined stretch ratios, and optimized amplitudes are determined for the logical gradients based on the updated scaling factors.Type: GrantFiled: April 21, 2021Date of Patent: September 20, 2022Assignee: Siemens Healthcare GmbHInventors: Waqas Majeed, David Grodzki, Florian Maier, Himanshu Bhat
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Patent number: 11375914Abstract: A method for producing an image representative of the vasculature of a subject using a MRI system includes the acquisition of a signal indicative of a subject' cardiac phase. During each heartbeat of the subject, image slices of a volume covering a region of interest (ROI) within the subject are acquired by applying a volume-selective venous suppression pulse to suppress (a) venous signal for an upper slice in the ROI; (b) venous signal for slices that are upstream for venous flow in the ROI; and (c) background signal from the upstream slices. Next, a slice-selective background suppression pulse is applied to suppress background signal of the upper slice. Following a quiescent time interval, a spectrally selective fat suppression pulse is applied to the entire volume to attenuate signal from background fat signal. Then, a simultaneous multi-slice acquisition of the upper slice and the upstream slices is performed.Type: GrantFiled: November 19, 2019Date of Patent: July 5, 2022Assignees: Siemens Healthcare GmbH, NorthShore University HealthsystemInventors: Shivraman Giri, Robert R. Edelman, Ioannis Koktzoglou, Himanshu Bhat
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Publication number: 20220143425Abstract: Systems and methods for taking into account susceptibility deviations in magnetic-resonance-based therapy planning by a magnetic resonance tomography unit. A B0 field map is determined by the magnetic resonance tomography unit. A location blur distribution is determined from the B0 field map and from the location blur distribution in turn, a parameter of an image acquisition as a function of the location blur distribution, in such a way that an image acquisition brings about a reduced location blur with the determined parameter.Type: ApplicationFiled: November 8, 2021Publication date: May 12, 2022Inventors: Manuel Schneider, Martin Requardt, Himanshu Bhat, Matthias Drobnitzky, Xin Miao, Xinyuan Cui
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Patent number: 11301997Abstract: A method for phase correction in proton resonance frequency (PRF) thermometry application includes acquiring a series of magnetic resonance (MR) images comprising a first MR image and plurality of subsequent MR images depicting an anatomical area of interest. The MR images are acquired while tissue in the anatomical area of interest is undergoing a temperature change. Each subsequent MR image is registered to the first MR image to yield a plurality of registered images. A plurality of basis images are computed from the registered images using Principal Component Analysis (PCA). The basis images are used to remove motion-related phase changes from a second series of MR images, thereby yielding a motion corrected second series of MR images. One or more temperature difference maps are generated that depict a relative temperature change for the tissue in the anatomical area of interest based on the motion corrected second series.Type: GrantFiled: April 15, 2020Date of Patent: April 12, 2022Assignees: Siemens Healthcare GmbH, The United States of America, as represented by the Secretary, Department of Health and Human ServicesInventors: Waqas Majeed, Himanshu Bhat, Rainer Schneider, Adrienne Campbell
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Publication number: 20220076704Abstract: In various examples, recordings of gameplay sessions are enhanced by the application of special effects to relatively high(er) and/or low(er) interest durations of the gameplay sessions. Durations of relatively high(er) or low(er) predicted interest in a gameplay session are identified, for instance, based upon level of activity engaged in by a gamer during a particular gameplay session duration. Once identified, different variations of video characteristic(s) are applied to at least a portion of the identified durations for implementation during playback. The recordings may be generated and/or played back in real-time with a live gameplay session, or after completion of the gameplay session. Further, video data of the recordings themselves may be modified to include the special effects and/or indications of the durations and/or variations may be included in metadata and used for playback.Type: ApplicationFiled: November 15, 2021Publication date: March 10, 2022Inventors: Prabindh Sundareson, Prakash Yadav, Himanshu Bhat
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Patent number: 11176717Abstract: A method for decomposing noise into white and spatially correlated components during MR thermometry imaging includes acquiring a series of MR images of an anatomical object and generating a series of temperature difference maps of the anatomical object. The method further includes receiving a selection of a region of interest (ROI) within the temperature difference map and estimating total noise variance values depicting total noise variance in the temperature difference map. Each total noise variance value is determined using a random sampling of a pre-determined number of voxels from the ROI. A white noise component and a spatially correlated noise component of the total noise variance providing a best fit to the total noise variance values for all of the random samplings are identified. The white noise component and the spatially correlated noise component are displayed on a user interface.Type: GrantFiled: September 26, 2019Date of Patent: November 16, 2021Assignees: Siemens Healthcare GmbH, The United States of America, as Represented by the Secretary. Department of Health and Human ServicesInventors: Waqas Majeed, Sunil Goraksha Patil, Rainer Schneider, Himanshu Bhat, Adrienne Campbell
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Patent number: 11176967Abstract: In various examples, recordings of gameplay sessions are enhanced by the application of special effects to relatively high(er) and/or low(er) interest durations of the gameplay sessions. Durations of relatively high(er) or low(er) predicted interest in a gameplay session are identified, for instance, based upon level of activity engaged in by a gamer during a particular gameplay session duration. Once identified, different variations of video characteristic(s) are applied to at least a portion of the identified durations for implementation during playback. The recordings may be generated and/or played back in real-time with a live gameplay session, or after completion of the gameplay session. Further, video data of the recordings themselves may be modified to include the special effects and/or indications of the durations and/or variations may be included in metadata and used for playback.Type: GrantFiled: July 14, 2020Date of Patent: November 16, 2021Assignee: NVIDIA CorporationInventors: Prabindh Sundareson, Prakash Yadav, Himanshu Bhat
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Publication number: 20210097738Abstract: A method for decomposing noise into white and spatially correlated components during MR thermometry imaging includes acquiring a series of MR images of an anatomical object and generating a series of temperature difference maps of the anatomical object. The method further includes receiving a selection of a region of interest (ROI) within the temperature difference map and estimating total noise variance values depicting total noise variance in the temperature difference map. Each total noise variance value is determined using a random sampling of a pre-determined number of voxels from the ROI. A white noise component and a spatially correlated noise component of the total noise variance providing a best fit to the total noise variance values for all of the random samplings are identified. The white noise component and the spatially correlated noise component are displayed on a user interface.Type: ApplicationFiled: September 26, 2019Publication date: April 1, 2021Inventors: Waqas Majeed, Sunil Goraksha Patil, Rainer Schneider, Himanshu Bhat, Adrienne Campbell-Washburn
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Publication number: 20200411056Abstract: In various examples, recordings of gameplay sessions are enhanced by the application of special effects to relatively high(er) and/or low(er) interest durations of the gameplay sessions. Durations of relatively high(er) or low(er) predicted interest in a gameplay session are identified, for instance, based upon level of activity engaged in by a gamer during a particular gameplay session duration. Once identified, different variations of video characteristic(s) are applied to at least a portion of the identified durations for implementation during playback. The recordings may be generated and/or played back in real-time with a live gameplay session, or after completion of the gameplay session. Further, video data of the recordings themselves may be modified to include the special effects and/or indications of the durations and/or variations may be included in metadata and used for playback.Type: ApplicationFiled: July 14, 2020Publication date: December 31, 2020Inventors: Prabindh Sundareson, Prakash Yadav, Himanshu Bhat
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Publication number: 20200342591Abstract: A method for phase correction in proton resonance frequency (PRF) thermometry application includes acquiring a series of magnetic resonance (MR) images comprising a first MR image and plurality of subsequent MR images depicting an anatomical area of interest. The MR images are acquired while tissue in the anatomical area of interest is undergoing a temperature change. Each subsequent MR image is registered to the first MR image to yield a plurality of registered images. A plurality of basis images are computed from the registered images using Principal Component Analysis (PCA). The basis images are used to remove motion-related phase changes from a second series of MR images, thereby yielding a motion corrected second series of MR images. One or more temperature difference maps are generated that depict a relative temperature change for the tissue in the anatomical area of interest based on the motion corrected second series.Type: ApplicationFiled: April 15, 2020Publication date: October 29, 2020Inventors: Waqas Majeed, Himanshu Bhat, Rainer Schneider, Adrienne Campbell-Washburn
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Publication number: 20200333413Abstract: A method for performing magnetic resonance-guided thermal therapy includes selecting a first set of sampling characteristics for acquiring a first set of slabs covering a first anatomical region of interest. Additionally, a second set of sampling characteristics is selected for acquiring a second set of slabs covering a second anatomical region of interest. This second set of sampling characteristics is distinct from the first set of sampling characteristics. An interleaved acquisition of the first set of slabs and the second set of slabs may then be performed using the first set of sampling characteristics and the second set of sampling characteristics.Type: ApplicationFiled: April 22, 2019Publication date: October 22, 2020Inventors: Sunil Goraksha Patil, Henrik Odeen, Himanshu Bhat, John Roberts, Dennis L. Parker, Bradley Drake Bolster, JR.
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Patent number: 10741215Abstract: In various examples, recordings of gameplay sessions are enhanced by the application of special effects to relatively high(er) and/or low(er) interest durations of the gameplay sessions. Durations of relatively high(er) or low(er) predicted interest in a gameplay session are identified, for instance, based upon level of activity engaged in by a gamer during a particular gameplay session duration. Once identified, different variations of video characteristic(s) are applied to at least a portion of the identified durations for implementation during playback. The recordings may be generated and/or played back in real-time with a live gameplay session, or after completion of the gameplay session. Further, video data of the recordings themselves may be modified to include the special effects and/or indications of the durations and/or variations may be included in metadata and used for playback.Type: GrantFiled: July 31, 2019Date of Patent: August 11, 2020Assignee: NVIDIA CorporationInventors: Prabindh Sundareson, Prakash Yadav, Himanshu Bhat
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Patent number: 10613174Abstract: In a method and apparatus for acquiring magnetic resonance (MR) data, MR signals are acquired simultaneously from S slices, of a total of N slices of a subject, with S being an SMS factor. The N slices are respectively at different positions from an isocenter of the data acquisition scanner, thereby causing said MR signals to be affected differently by Maxwell terms of magnetic fields that give said MR signals respective signal dephasings that are dependent on the distance of a respective slice from the isocenter. The SMS MR data acquisition sequence is executed with a spacing between each pair of adjacent slices being less than N/S. Maxwell correction gradient moments are calculated at an average position between the S slices, thereby generating corrected k-space data wherein the signal dephasing of the MR signals from the S slices is reduced.Type: GrantFiled: October 28, 2016Date of Patent: April 7, 2020Assignee: Siemens Healthcare GmbHInventors: Himanshu Bhat, Uvo Hoelscher, Mario Zeller
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Publication number: 20200085322Abstract: A method for producing an image representative of the vasculature of a subject using a MRI system includes the acquisition of a signal indicative of a subject' cardiac phase. During each heartbeat of the subject, image slices of a volume covering a region of interest (ROI) within the subject are acquired by applying a volume-selective venous suppression pulse to suppress (a) venous signal for an upper slice in the ROI; (b) venous signal for slices that are upstream for venous flow in the ROI; and (c) background signal from the upstream slices. Next, a slice-selective background suppression pulse is applied to suppress background signal of the upper slice. Following a quiescent time interval, a spectrally selective fat suppression pulse is applied to the entire volume to attenuate signal from background fat signal. Then, a simultaneous multi-slice acquisition of the upper slice and the upstream slices is performed.Type: ApplicationFiled: November 19, 2019Publication date: March 19, 2020Inventors: Shivraman Giri, Robert R. Edelman, Ioannis Koktzoglou, Himanshu Bhat
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Patent number: 10517490Abstract: A method for producing an image representative of the vasculature of a subject using a MRI system includes the acquisition of a signal indicative of a subject' cardiac phase. During each heartbeat of the subject, image slices of a volume covering a region of interest (ROI) within the subject are acquired by applying a volume-selective venous suppression pulse to suppress (a) venous signal for an upper slice in the ROI; (b) venous signal for slices that are upstream for venous flow in the ROI; and (c) background signal from the upstream slices. Next, a slice-selective background suppression pulse is applied to suppress background signal of the upper slice. Following a quiescent time interval, a spectrally selective fat suppression pulse is applied to the entire volume to attenuate signal from background fat signal. Then, a simultaneous multi-slice acquisition of the upper slice and the upstream slices is performed.Type: GrantFiled: October 24, 2016Date of Patent: December 31, 2019Assignees: Siemens Healthcare GmbH, Northshore University HealthsystemInventors: Shivraman Giri, Robert R. Edelman, Ioannis Koktzoglou, Himanshu Bhat
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Patent number: 10495709Abstract: In a magnetic resonance apparatus and a method for operating the MR apparatus to acquire MR data in a single scan with different contrasts, nuclear spins in multiple slices of an examination subject are simultaneously excited in a single scan, with a simultaneous multi-slice acquisition sequence, in which a radio-frequency multi-band binomial pulse is radiated.Type: GrantFiled: July 25, 2016Date of Patent: December 3, 2019Assignee: Siemens Healthcare GmbHInventors: Himanshu Bhat, Mario Zeller
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Patent number: 10330759Abstract: In a method and apparatus for acquiring magnetic resonance (MR) data, an MR data acquisition scanner is operated, while a subject is situated therein to execute a simultaneous multislice (SMS) turbo spin echo (TSE) sequence by implementing a TSE-based reference scan to acquire reference data and an imaging scan, to acquire raw MR data from the subject. The reference data and the raw MR data are entered into a memory organized as k-space. A computer accesses the memory in order to make the k-space data, composed of said reference data and said image data, available in electronic form, as at least one data file.Type: GrantFiled: September 12, 2016Date of Patent: June 25, 2019Assignee: Siemens Healthcare GmbHInventors: Flavio Carinci, Dominik Paul, Himanshu Bhat, Mario Zeller