Patents by Inventor Rafael Shmuel Brada
Rafael Shmuel Brada 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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Patent number: 11756197Abstract: A computer-implemented method of processing complex magnetic resonance (MR) images is provided. The method includes receiving a pair of corrupted complex data and pristine complex images. The method also includes training a neural network model using the pair by inputting the corrupted complex data to the neural network model, setting the pristine complex images as target outputs, and processing the corrupted complex data using the neural network model to derive output complex images of the corrupted complex data. Training a neural network model also includes comparing the output complex images with the target outputs by computing a phase-sensitive structural similarity index measure (PS-SSIM) between each of the output complex images and its corresponding target complex image, wherein the PS-SSIM is real-valued and varies with phases of the output complex image and phases of the target complex image, and adjusting the neural network model based on the comparison.Type: GrantFiled: March 10, 2021Date of Patent: September 12, 2023Assignee: GE PRECISION HEALTHCARE LLCInventors: Sangtae Ahn, Uri Wollner, Graeme C. Mckinnon, Rafael Shmuel Brada, Christopher Judson Hardy
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Patent number: 11696700Abstract: K-space data obtained from a magnetic resonance imaging scan where motion was detected is split into two parts in accordance with the timing of the motion to produce first and second sets of k-space data corresponding to different poses. Sub-images are reconstructed from the k first and second sets of k-space data, which are used as inputs to a deep neural network which transforms them into a motion-corrected image.Type: GrantFiled: April 25, 2019Date of Patent: July 11, 2023Assignee: General Electric CompanyInventors: Michael Rotman, Rafael Shmuel Brada, Sangtae Ahn, Christopher Judson Hardy, Itzik Malkiel, Ron Wein
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Patent number: 11519992Abstract: A magnetic resonance (MR) imaging method of detecting and scoring motion artifacts in MR images of an object is provided. The method includes computing a k-space difference map based at least in part on first MR signals of the object acquired with a first coil and second MR signals of the object acquired with a second coil. The method also includes generating a difference plot based on the k-space difference map, the difference plot including a curve. The method further includes calculating a motion score based on the curve in the difference plot, wherein the motion score indicates the level of motion artifacts in the image caused by motion of the object during acquisition of the first MR signals and the second MR signals, and the motion score includes an area under the curve. Moreover, the method includes outputting the motion score.Type: GrantFiled: August 26, 2020Date of Patent: December 6, 2022Assignee: GE PRECISION HEALTHCARE LLCInventors: Rafael Shmuel Brada, Christopher Judson Hardy, Sangtae Ahn
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Publication number: 20220292679Abstract: A computer-implemented method of processing complex magnetic resonance (MR) images is provided. The method includes receiving a pair of corrupted complex data and pristine complex images. The method also includes training a neural network model using the pair by inputting the corrupted complex data to the neural network model, setting the pristine complex images as target outputs, and processing the corrupted complex data using the neural network model to derive output complex images of the corrupted complex data. Training a neural network model also includes comparing the output complex images with the target outputs by computing a phase-sensitive structural similarity index measure (PS-SSIM) between each of the output complex images and its corresponding target complex image, wherein the PS-SSIM is real-valued and varies with phases of the output complex image and phases of the target complex image, and adjusting the neural network model based on the comparison.Type: ApplicationFiled: March 10, 2021Publication date: September 15, 2022Inventors: Sangtae Ahn, Uri Wollner, Graeme C. McKinnon, Rafael Shmuel Brada, Christopher Judson Hardy
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Publication number: 20220065969Abstract: A magnetic resonance (MR) imaging method of detecting and scoring motion artifacts in MR images of an object is provided. The method includes computing a k-space difference map based at least in part on first MR signals of the object acquired with a first coil and second MR signals of the object acquired with a second coil. The method also includes generating a difference plot based on the k-space difference map, the difference plot including a curve. The method further includes calculating a motion score based on the curve in the difference plot, wherein the motion score indicates the level of motion artifacts in the image caused by motion of the object during acquisition of the first MR signals and the second MR signals, and the motion score includes an area under the curve. Moreover, the method includes outputting the motion score.Type: ApplicationFiled: August 26, 2020Publication date: March 3, 2022Inventors: Rafael Shmuel Brada, Christopher Judson Hardy, Sangtae Ahn
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Patent number: 10996306Abstract: A magnetic resonance imaging (MRI) system includes control and analysis circuitry having programming to acquire magnetic resonance (MR) data using coil elements of the MRI system, analyze the MR data, and reconstruct the MR data into MR sub-images. The system also includes a trained neural network associated with the control and analysis circuitry to transform the MR sub-images into a prediction relating to a presence and extent of motion corruption in the MR sub-images. The programming of the control and analysis circuitry includes instructions to control operations of the MRI system based at least in part on the prediction of the trained neural network.Type: GrantFiled: April 25, 2019Date of Patent: May 4, 2021Assignee: GENERAL ELECTRIC COMPANYInventors: Isabelle Heukensfeldt Jansen, Sangtae Ahn, Christopher Judson Hardy, Itzik Malkiel, Rafael Shmuel Brada, Ron Wein, Michael Rotman
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Publication number: 20200337591Abstract: K-space data obtained from a magnetic resonance imaging scan where motion was detected is split into two parts in accordance with the timing of the motion to produce first and second sets of k-space data corresponding to different poses. Sub-images are reconstructed from the k first and second sets of k-space data, which are used as inputs to a deep neural network which transforms them into a motion-corrected image.Type: ApplicationFiled: April 25, 2019Publication date: October 29, 2020Inventors: Michael Rotman, Rafael Shmuel Brada, Sangtae Ahn, Christopher Judson Hardy, Itzik Malkiel, Ron Wein
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Publication number: 20200341100Abstract: A magnetic resonance imaging (MRI) system includes control and analysis circuitry having programming to acquire magnetic resonance (MR) data using coil elements of the MRI system, analyze the MR data, and reconstruct the MR data into MR sub-images. The system also includes a trained neural network associated with the control and analysis circuitry to transform the MR sub-images into a prediction relating to a presence and extent of motion corruption in the MR sub-images. The programming of the control and analysis circuitry includes instructions to control operations of the MRI system based at least in part on the prediction of the trained neural network.Type: ApplicationFiled: April 25, 2019Publication date: October 29, 2020Inventors: Isabelle Heukensfeldt Jansen, Sangtae Ahn, Christopher Judson Hardy, Itzik Malkiel, Rafael Shmuel Brada, Ron Wein, Michael Rotman
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Publication number: 20200337592Abstract: A system and method for detecting, timing, and adapting to patient motion during an MR scan includes using the inconsistencies between calculated images from different coil-array elements to detect the presence of patient motion and, together with the k-space scan-order information, determine the timing of the motion during the scan. Once the timing is known, various actions may be taken, including restarting the scan, reacquiring those portions of k-space acquired before the movement, or correcting for the motion using the existing data and reconstructing a motion-corrected image from the data.Type: ApplicationFiled: April 25, 2019Publication date: October 29, 2020Inventors: Rafael Shmuel Brada, Christopher Judson Hardy, Sangtae Ahn, Isabelle Heukensfeldt Jansen, Itzik Malkiel, Michael Rotman, Ron Wein
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Patent number: 10806370Abstract: A system and method for detecting, timing, and adapting to patient motion during an MR scan includes using the inconsistencies between calculated images from different coil-array elements to detect the presence of patient motion and, together with the k-space scan-order information, determine the timing of the motion during the scan. Once the timing is known, various actions may be taken, including restarting the scan, reacquiring those portions of k-space acquired before the movement, or correcting for the motion using the existing data and reconstructing a motion-corrected image from the data.Type: GrantFiled: April 25, 2019Date of Patent: October 20, 2020Assignee: GENERAL ELECTRIC COMPANYInventors: Rafael Shmuel Brada, Christopher Judson Hardy, Sangtae Ahn, Isabelle Heukensfeldt Jansen, Itzik Malkiel, Michael Rotman, Ron Wein
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Patent number: 8731642Abstract: A method for determining by an x-ray projection a position of a target radiopaque marker disposed on a catheter in a subject's body, comprising assigning a landmark in the body as a reference point compensated for periodic movements of the body, determining an auxiliary location relative to the reference point using at least one additional radiopaque marker disposed on the catheter and based on the auxiliary location determining the position of the target radiopaque marker with respect to the reference point.Type: GrantFiled: November 8, 2010Date of Patent: May 20, 2014Assignee: Paieon Inc.Inventors: Michael Zarkh, Rafael Shmuel Brada
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Publication number: 20110194745Abstract: A method for tracking position of a feature in a subject is provided comprising operating a CT scanner to generate and display CT images of a volume within the subject and operating the CT scanner to generate projection X-Ray images of the volume. The X-Ray images are responsive to X-Ray emitted by two X-Ray sources displaced from each other. The method further comprises generating and displaying stereoscopic images from said projection X-Ray images, wherein the stereoscopic images are spatially registered to the CT images.Type: ApplicationFiled: April 14, 2011Publication date: August 11, 2011Applicant: ARINETA LTD.Inventors: Ehud DAFNI, Rafael Shmuel Brada
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Publication number: 20110112398Abstract: A method for determining by an x-ray projection a position of a target radiopaque marker disposed on a catheter in a subject's body, comprising assigning a landmark in the body as a reference point compensated for periodic movements of the body, determining an auxiliary location relative to the reference point using at least one additional radiopaque marker disposed on the catheter and based on the auxiliary location determining the position of the target radiopaque marker with respect to the reference point.Type: ApplicationFiled: November 8, 2010Publication date: May 12, 2011Applicant: PAIEON INC.Inventors: Michael ZARKH, Rafael Shmuel Brada
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Publication number: 20090257551Abstract: A CT scanner for scanning a subject is provided, the scanner comprising: a gantry capable of rotating about a scanned subject; at least two cone beam X-Ray sources displaced from each other mounted on said gantry; at least one 2D detector array mounted on said gantry, said detector is capable of receiving radiation emitted by said at least two X-Ray sources and attenuated by the subject to be scanned; a first image processor capable of generating and displaying CT images of a volume within the subject; a second image processor capable of generating projection X-Ray images of said volume, wherein the images are responsive to X-Ray separately emitted by each of said at least two cone beam X-Ray sources; and a third image processor capable of generating and displaying fluoroscopic images composed of said projection X-Ray images, wherein said fluoroscopic images are spatially registered to said CT images.Type: ApplicationFiled: April 7, 2009Publication date: October 15, 2009Applicant: ARINETA CARDIO IMAGING LTD.Inventors: Ehud DAFNI, Rafael Shmuel Brada