Patents by Inventor Boaz Shapira
Boaz Shapira 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: 11921182Abstract: Systems and methods provide accelerated MR thermometry utilizing prior knowledge about the images to be reconstructed from incomplete k-space data, thereby facilitating accurate reconstruction. In various embodiments, missing data is computationally estimated using a machine learning algorithm such as a neural network, and an image is generated based on iteratively updated estimated missing information.Type: GrantFiled: April 21, 2020Date of Patent: March 5, 2024Assignee: INSIGHTEC LTD.Inventors: Yuval Zur, Boaz Shapira, Yoav Levy
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Publication number: 20220203139Abstract: Ultrasound transducers adjust the B1+ and/or B1? field distribution in an MRI apparatus to improve the signal sensitivity and homogeneity at a region of interest. Approaches employed include strategic placement of field-altering features such as slots and/or dipoles along the exterior surface or, in some cases, the interior of the transducer. In various embodiments, the field-altering features are (or behave as) passive resonators.Type: ApplicationFiled: June 5, 2020Publication date: June 30, 2022Inventor: Boaz SHAPIRA
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Publication number: 20220196771Abstract: Systems and methods provide accelerated MR thermometry utilizing prior knowledge about the images to be reconstructed from incomplete k-space data, thereby facilitating accurate reconstruction. In various embodiments, missing data is computationally estimated using a machine learning algorithm such as a neural network, and an image is generated based on iteratively updated estimated missing information.Type: ApplicationFiled: April 21, 2020Publication date: June 23, 2022Inventors: Yuval ZUR, Boaz SHAPIRA, Yoav LEVY
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Patent number: 10890636Abstract: A method of determining the frequency and amplitude of a perturbing cyclic EM signal in the field of view of an NMR or MRI system during acquisition of a spin-echo spectrum. The frequency ? of the perturbing electromagnetic signal is determined by acquiring a plurality of n 2D NMR spectra with n different values of TR; selecting a peak in each of the n NMR spectra; determining the area of the peak; calculating possible frequencies along the ?TR axis; and eliminating results that do not match the position along the ?? axis, thereby obtaining ?. The amplitude ? of the perturbing electromagnetic signal is determined by calculating the square of the area of the peak.Type: GrantFiled: April 30, 2015Date of Patent: January 12, 2021Assignee: ASPECT IMAGING LTD.Inventor: Boaz Shapira
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Patent number: 10655996Abstract: Method of determining a velocity profile of a fluid flowing through a conduit, the method including applying a saturation pulse on spins of magnetic field-sensitive nuclei in the fluid, measuring a signal of the fluid to determine position of the magnetic field-sensitive nuclei, the measurement carried out at a recovery time ‘TR’ and at a distance ‘d’ within the conduit, determining within the conduit a radial distance ‘r’ characterized by a local minimum in the measured signal, wherein the radial distance ‘r’ is measured from the center of the conduit, and determining a velocity profile of the fluid at the radial distance, based on the magnetic field-sensitive nuclei.Type: GrantFiled: April 11, 2017Date of Patent: May 19, 2020Assignee: Aspect Imaging Ltd.Inventors: Peter Bendel, Boaz Shapira
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Patent number: 10444170Abstract: System and method for analyzing changes in a fluid flowing through a conduit, including defining at least one coordinate within said conduit, said conduit having a first plurality of slices, receiving at least one known value for at least one property of the fluid, measuring said fluid using magnetic resonance, determining at least one image from the measured fluid, the at least one image having a second plurality of slices for said at least one coordinate, determining a second set of values for said at least one property of said fluid, comparing the first set of values and second set of values for said at least one property to determine a difference value, checking deviation of the determined difference from a predetermined value for said fluid, and issuing an alert if the deviation is not substantially zero.Type: GrantFiled: July 3, 2016Date of Patent: October 15, 2019Assignee: ASPECT AI LTD.Inventors: Uri Rapoport, Boaz Shapira
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Patent number: 10261146Abstract: A method of reducing artifacts produced during Fast Spin Echo measurements made using permanent magnet NMR instruments. The method includes applying encoding gradients that do not switch signs throughout the experiment. Prior to the 90° RF pulse, a strong RM gradient pulse is given to produce a dominant and constant residual magnetization. The encoding is done through the combination of encoding gradients with the aid of the 180° RF pulses of the echo train. A first constant encoding gradient is given before the first 180 pulse. Then two variable encoding gradients are provided after each 180 pulse; one applied prior to and one applied subsequent to each acquisition in the echo train.Type: GrantFiled: April 30, 2015Date of Patent: April 16, 2019Assignee: ASPECT IMAGING LTD.Inventors: Boaz Shapira, Uri Rapoport
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Publication number: 20180188194Abstract: System and method for analyzing changes in a fluid flowing through a conduit, including defining at least one coordinate within said conduit, said conduit having a first plurality of slices, receiving at least one known value for at least one property of the fluid, measuring said fluid using magnetic resonance, determining at least one image from the measured fluid, the at least one image having a second plurality of slices for said at least one coordinate, determining a second set of values for said at least one property of said fluid, comparing the first set of values and second set of values for said at least one property to determine a difference value, checking deviation of the determined difference from a predetermined value for said fluid, and issuing an alert if the deviation is not substantially zero.Type: ApplicationFiled: July 3, 2016Publication date: July 5, 2018Applicant: Aspect Al Ltd.Inventors: Uri RAPOPORT, Boaz SHAPIRA
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Publication number: 20170336489Abstract: An MRI-based method for determining a velocity profile for a fluid flowing through a pipe, said method comprising: selecting a slice through which said fluid is flowing; selecting a pulse sequence; separating said pulse sequence into a preparation part and a readout part; applying said preparation part to said slice; waiting a predetermined time Rt; and, applying said readout part to said slice.Type: ApplicationFiled: November 1, 2015Publication date: November 23, 2017Applicant: ASPECT IMAGING LTD.Inventors: Peter BENDEL, Boaz SHAPIRA
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Publication number: 20170292866Abstract: Method of determining a velocity profile of a fluid flowing through a conduit, the method including applying a saturation pulse on spins of magnetic field-sensitive nuclei in the fluid, measuring a signal of the fluid to determine position of the magnetic field-sensitive nuclei, the measurement carried out at a recovery time ‘TR’ and at a distance ‘d’ within the conduit, determining within the conduit a radial distance ‘r’ characterized by a local minimum in the measured signal, wherein the radial distance ‘r’ is measured from the center of the conduit, and determining a velocity profile of the fluid at the radial distance, based on the magnetic field-sensitive nuclei.Type: ApplicationFiled: April 11, 2017Publication date: October 12, 2017Inventors: Peter BENDEL, Boaz SHAPIRA
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Publication number: 20150338486Abstract: A method of reducing artifacts produced during Fast Spin Echo measurements made using permanent magnet NMR instruments. The method includes applying encoding gradients that do not switch signs throughout the experiment. Prior to the 90° RF pulse, a strong RM gradient pulse is given to produce a dominant and constant residual magnetization. The encoding is done through the combination of encoding gradients with the aid of the 180° RF pulses of the echo train. A first constant encoding gradient is given before the first 180 pulse. Then two variable encoding gradients are provided after each 180 pulse; one applied prior to and one applied subsequent to each acquisition in the echo train.Type: ApplicationFiled: April 30, 2015Publication date: November 26, 2015Inventors: Boaz SHAPIRA, Uri RAPOPORT
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Publication number: 20150338493Abstract: A method of determining the frequency and amplitude of a perturbing cyclic EM signal in the field of view of an NMR or MRI system during acquisition of a spin-echo spectrum. The frequency ? of the perturbing electromagnetic signal is determined by acquiring a plurality of n 2D NMR spectra with n different values of TR; selecting a peak in each of the n NMR spectra; determining the area of the peak; calculating possible frequencies along the ?TR axis; and eliminating results that do not match the position along the ?? axis, thereby obtaining ?. The amplitude ? of the perturbing electromagnetic signal is determined by calculating the square of the area of the peak.Type: ApplicationFiled: April 30, 2015Publication date: November 26, 2015Inventor: Boaz SHAPIRA
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Patent number: 7944206Abstract: A method and apparatus for treating a sample for acquiring high-definition magnetic resonance images (MRI images) or high resolution nuclear magnetic resonance (NMR) spectra even in the presence of magnetic field distortions within one or multiple scans. The spatial nature and temporal dependence of the field inhomogeneities are determined a priori using any of several literature procedures. A static or oscillating magnetic field gradient is applied on the sample so as to endow spins at different positions within the sample with different resonance frequencies. A phase- and amplitude-modulated radiofrequency (RF) pulse is applied in unison with the magnetic field gradient so as to endow spins at different positions within the sample with a homogeneous excitation/inversion profile.Type: GrantFiled: December 14, 2006Date of Patent: May 17, 2011Assignee: Yeda Research and Development Co. Ltd.Inventors: Lucio Frydman, Boaz Shapira, Assaf Tal
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Publication number: 20100001727Abstract: A method and apparatus for treating a sample for acquiring high-definition magnetic resonance images (MRI images) or high resolution nuclear magnetic resonance (NMR) spectra even in the presence of magnetic field distortions within one or multiple scans. The spatial nature and temporal dependence of the field inhomogeneities are determined a priori using any of several literature procedures. A static or oscillating magnetic field gradient is applied on the sample so as to endow spins at different positions within the sample with different resonance frequencies. A phase- and amplitude-modulated radiofrequency (RF) pulse is applied in unison with the magnetic field gradient so as to endow spins at different positions within the sample with a homogeneous excitation/inversion profile.Type: ApplicationFiled: December 14, 2006Publication date: January 7, 2010Inventors: Lucio Frydman, Boaz Shapira, Assaf Tal