Patents Examined by Rishi R Patel
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Patent number: 10429462Abstract: A magnetic resonance (MR) device, having a gradient arrangement that includes a gradient coil (G) with an internal resistance (Rg), as well as an electric circuit for generating variable pulse-shaped currents through the gradient arrangement. The electric circuit has at least one low-voltage voltage source (V) for generating a voltage U?100V, and a first circuit section in the electric circuit for current in the gradient coil in one direction and a second circuit section in the electric circuit for current in the gradient coil in a reverse direction to the first circuit section. This permits the generation of accurate square-wave current pulses, with a simultaneously short charging time of the auxiliary inductance.Type: GrantFiled: July 31, 2018Date of Patent: October 1, 2019Assignee: BRUKER BIOSPIN GMBHInventor: Michael Maixner
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Patent number: 10429477Abstract: A system and method for calculating a flip angle schedule is provided. The technique includes selecting an initial condition, providing a function for calculating flip angles, calculating flip angles, assessing the flip angles, and repeating the calculation of the flip angles by adjusting the function until a desired flip angle schedule is obtained.Type: GrantFiled: August 21, 2015Date of Patent: October 1, 2019Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.Inventors: Guobin Li, Chaohong Wang
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Patent number: 10429471Abstract: The invention provides a device for producing a magnetic resonance image.Type: GrantFiled: June 7, 2016Date of Patent: October 1, 2019Assignee: Koninklijke Philips N.V.Inventors: Chenguang Zhao, Feng Huang, Ming Yang
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Patent number: 10429473Abstract: A method, magnetic resonance imaging computing device, and a non-transitory computer readable medium for producing a slice-selective adiabatic magnetization T2 preparation pulse for magnetic resonance imaging. A pulse control signal including an adiabatic half passage pulse control signal, an adiabatic full passage pulse control signal, and a reverse adiabatic half passage pulse control signal is generated. A plurality of slice-selective linear phase subpulse control signals are generated. The pulse control signal is sampled using the plurality of slice-selective linear phase subpulse control signals to generate a slice-selective adiabatic magnetization T2 preparation control signal. The slice-selective adiabatic magnetization T2 preparation control signal is output to a waveform generator to produce the slice-selective adiabatic magnetization T2 preparation pulse.Type: GrantFiled: March 11, 2016Date of Patent: October 1, 2019Assignee: Icahn School of Medicine at Mount SinaiInventors: Hadrien Dyvorne, Priti Balchandani
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Patent number: 10416260Abstract: A magnetic field within a magnetic resonance (MR) imaging system (300) is measured. The MR system includes a magnet (304) with an imaging zone (308), a radio-frequency transceiver (316), and a magnetic field probe (322) located within the imaging zone. The magnetic field probe includes a fluorine sample (404) including any one of the following: a fluoroelastomer (700), a fluorine containing ionic liquid (600), and a solution of a fluorine containing compound. The field probe further includes an antenna (406) for manipulating the magnetic spins of the fluorine sample and for receiving fluorine magnetic resonance data from the fluorine sample. The antenna is connected to the radio-frequency transceiver. The method includes acquiring (100, 200) the fluorine magnetic resonance data using the magnetic resonance imaging system and calculating (102, 206) a magnetic field strength (344) using the fluorine magnetic resonance data.Type: GrantFiled: October 12, 2012Date of Patent: September 17, 2019Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Miha Fuderer, Jeroen Alphons Pikkemaat
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Patent number: 10416264Abstract: Some aspects include a method of detecting change in degree of midline shift in a brain of a patient. The method comprises, while the patient remains positioned within the low-field magnetic resonance imaging device, acquiring first magnetic resonance (MR) image data and second MR image data of the patient's brain; providing the first and second MR data as input to a trained statistical classifier to obtain corresponding first and second output, identifying, from the first output, at least one initial location of at least one landmark associated with at least one midline structure of the patient's brain; identifying, from the second output, at least one updated location of the at least one landmark; and determining a degree of change in the midline shift using the at least one initial location of the at least one landmark and the at least one updated location of the at least one landmark.Type: GrantFiled: November 21, 2017Date of Patent: September 17, 2019Assignee: Hyperfine Research, Inc.Inventors: Michal Sofka, Jonathan M. Rothberg, Gregory L. Charvat, Tyler S. Ralston
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Patent number: 10416259Abstract: Apparatus, methods, and other embodiments associated with NMR fingerprinting are described. One example NMR apparatus includes an NMR logic configured to repetitively and variably sample a (k, t, E) space associated with an object to acquire a set of NMR signals. Members of the set of NMR signals are associated with different points in the (k, t, E) space. Sampling is performed with t and/or E varying in a non-constant way. The varying parameters may include flip angle, echo time, RF amplitude, and other parameters. The NMR apparatus may also include a signal logic configured to produce an NMR signal evolution from the NMR signals, a matching logic configured to compare a signal evolution to a known, simulated or predicted signal evolution, and a characterization logic configured to characterize a resonant species in the object as a result of the signal evolution comparisons.Type: GrantFiled: May 6, 2014Date of Patent: September 17, 2019Assignee: Case Western Reserve UniversityInventors: Mark Griswold, Nicole Seiberlich, Dan Ma, Vikas Gulani
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Patent number: 10401444Abstract: A quantitative image (resonance frequency map) of a resonance frequency difference is obtained using a high-speed phase compensated pulse sequence of a gradient echo (GE) system. A signal function of the pulse sequence used when obtaining the resonance frequency map is generated by a numerical simulation. The high-speed phase compensated pulse sequence uses a BASG sequence, for example.Type: GrantFiled: January 30, 2015Date of Patent: September 3, 2019Assignee: Hitachi, Ltd.Inventors: Yo Taniguchi, Toru Shirai, Suguru Yokosawa, Shinji Kurokawa, Hisaaki Ochi
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Patent number: 10386434Abstract: A method is for carrying out an automatic adjustment of an MR system, including a number of receive coils. In such cases, a number of partial spectra in a number of receive coils are measured for an excitation volume of an examination object. The number of partial spectra are evaluated via an algorithm, at least one characteristic value being determined for each partial spectrum and a decision being further made with the aid of the number of characteristic values to determine whether the partial spectra fulfill a quality criterion. Finally, adjustment parameters of the MR system are optimized on the basis of the number of partial spectra.Type: GrantFiled: February 28, 2018Date of Patent: August 20, 2019Assignee: SIEMENS HEALTHCARE GMBHInventors: Johann Sukkau, Michael Wullenweber, Daniel Niederloehner
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Patent number: 10379177Abstract: An apparatus for visually monitoring a magnetic resonance scanner situated in a room, which is screened by an RF screen, has a camera and a screen housing in the screened room, a data link, and a receiver outside the screened room. The camera and the receiver each have at least one interface to the data link, which exits the screened room at a room interface that has a filter. The camera and the screen housing are designed so that the screen housing reduces magnetic and/or electrical interaction of the camera with a magnetic field generated by the magnetic resonance scanner. The camera has a field of view for visual detection of at least a part of the magnetic resonance scanner and is configured to generate visual data. The data link transfers the visual data between the camera and the receiver.Type: GrantFiled: January 27, 2017Date of Patent: August 13, 2019Assignee: Siemens Healthcare GmbHInventor: Stephan Biber
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Patent number: 10371764Abstract: An optical pumping and isotropic measurement magnetometer. The magnetometer is all-optical in the sense that resonance between Zeeman sub-levels is induced by modulating the intensity or the frequency of the pump beam. Resonance is detected either using the pump beam itself or an unmodulated probe beam. The pump beam is linearly polarised and its polarisation direction is kept constant relative to the direction of the magnetic field to be measured, so that a measurement independent of the orientation of the field can be made.Type: GrantFiled: July 7, 2016Date of Patent: August 6, 2019Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Sophie Morales, Mathieu Baicry, Francois Bertrand, Matthieu Le Prado, Jean-Michel Leger, Umberto Rossini, Jaroslaw Rutkowski
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Patent number: 10371777Abstract: A magnetic resonance (MR) imaging (MRI) system, the MRI system may include at least one controller which may be configured to: acquire MR information for at least first and second blades of a periodically rotated overlapping parallel lines with enhanced reconstruction (PROPELLER) imaging method; generate, for at least the first and second blades, main field inhomogeneity information based upon the acquired MR information, the main field inhomogeneity information indicating main field inhomogeneity; generate water and fat information individually for at least the first and second blades based upon the acquired MR information and the generated main field inhomogeneity information for the corresponding blade of the first and second blades; and correct at least one of the water and fat information for spatial distortions caused by the main field inhomogeneity or a predetermined chemical shift difference between water and fat.Type: GrantFiled: February 13, 2015Date of Patent: August 6, 2019Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Michael Schar, Holger Eggers, James Grant Pipe
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Patent number: 10365341Abstract: An MRI method includes: defining image regions on an object; setting imaging conditions for the defined image regions; and acquiring MR images for the image regions according to the set imaging conditions. The imaging conditions may be set by displaying information about the defined image regions and setting the imaging conditions for the image regions based on the displayed information.Type: GrantFiled: September 17, 2013Date of Patent: July 30, 2019Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Keum-yong Oh, Sang-young Zho, Sang-heum Cho, Jin-young Hwang
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Patent number: 10353033Abstract: The present invention provides a method for quantitative analysis of a compound in a sample characterized in that the quantitative analysis is performed by a method of using an external standard which obtains NMR spectra of a sample and a standard substance and then compares them, and it can be applied even to an insoluble sample.Type: GrantFiled: February 15, 2017Date of Patent: July 16, 2019Assignee: LG Chem, Ltd.Inventors: Hee Yong Park, Soo Young Kwak, Hye Sung Cho
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Patent number: 10345399Abstract: A magnetic resonance RF field is produced in a magnetic resonance imaging system that includes a main magnetic field apparatus and an object-bearing table movable relative to the main magnetic field apparatus and on which a local coil system is arranged. The local coil system includes a plurality of transmission elements. A current location of the object-bearing table relative to the main magnetic field apparatus is established. The transmission elements are automatically connected based on the current location of the object-bearing table.Type: GrantFiled: April 4, 2014Date of Patent: July 9, 2019Assignee: Siemens AktiengesellschaftInventors: Hans-Peter Fautz, Wolfgang Renz, Franz Schmitt
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Patent number: 10324145Abstract: A transverse-electromagnetic (TEM) radio-frequency coil (1) for a magnetic resonance system, especially for a magnetic resonance imaging system, includes a coil (1) in which at least one of the opposite end regions of the elongate strip section (4) of each TEM coil element (2) has a lateral extension (6) transverse to a longitudinal extent of the strip section (4). These lateral extensions (6) combine with strip sections (4) to form L- or U-shaped TEM coil elements (2) and provide ‘ring-like’ current contributions resulting in a reduction of the z-sensitivity compared with a conventional TEM coil. The result is a coil array having TEM coil elements (2) that provide smaller sensitivity profiles in the z-direction, yet preserve the characteristics of a well-defined RF ground, e.g. via an RF shield or screen (3). The reduced field of view in z-direction not only reduces noise reception but also reduces the SAR generated in those regions during transmission.Type: GrantFiled: October 3, 2012Date of Patent: June 18, 2019Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Christoph Leussler, Daniel Wirtz
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Patent number: 10324153Abstract: A system and method for calculating a flip angle schedule is provided. The technique includes selecting an initial condition, providing a function for calculating flip angles, calculating flip angles, assessing the flip angles, and repeating the calculation of the flip angles by adjusting the function until a desired flip angle schedule is obtained.Type: GrantFiled: March 2, 2017Date of Patent: June 18, 2019Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.Inventors: Guobin Li, Chaohong Wang
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Patent number: 10317488Abstract: In a method and a magnetic resonance system for fat saturation when acquiring magnetic resonance data in a predetermined volume segment of an examination object, a SPAIR pulse is emitted and an RF excitation pulse is emitted following a predetermined time period after the SPAIR pulse, and magnetic resonance data are thereafter acquired. The time period of at least one slice is set so as to be different from the time period for the remaining slices.Type: GrantFiled: March 18, 2015Date of Patent: June 11, 2019Assignee: Siemens AktiengesellschaftInventors: Jan Ole Blumhagen, Dominik Paul, Daniel Nico Splitthoff
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Patent number: 10295622Abstract: A method for signaling a tuning of an adjustment parameter of an antenna coil arrangement of a magnetic resonance tomograph includes detecting a deviation between an actual adjustment value of at least one adjustment parameter and a required adjustment value of the at least one adjustment parameter. As a function of the deviation, an acoustic and/or a mechanical signal is output in real time to an operator. A device for signaling a tuning of an adjustment parameter of a coil arrangement of a magnetic resonance tomograph, and a magnetic resonance tomograph operating according to the method and/or containing the device are described.Type: GrantFiled: March 6, 2015Date of Patent: May 21, 2019Assignee: Siemens AktiengesellschaftInventors: Razvan Lazar, Paul Yoe
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Patent number: 10295619Abstract: According to one embodiment, a bed apparatus for a magnetic resonance imaging apparatus includes a table, a table driving mechanism, a bed supporting part, and a cable guide. The table provides a connection port for a reception coil of magnetic resonance signals. The table driving mechanism is configured to shift the table. The bed supporting part is configured to support the table. The cable guide is configured to protect a signal cable between the table and the bed supporting part and to bend a portion of the signal cable along with a move of the table. The signal cable is connected to the connection port. The portion of the signal cable corresponds to a position of the table.Type: GrantFiled: January 9, 2013Date of Patent: May 21, 2019Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATIONInventor: Takuhiro Oosawa