To Obtain Localized Resonance Within A Sample Patents (Class 324/309)
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Patent number: 11353535Abstract: Apparatuses, methods, and computer program products for reducing an appearance of an artifact in an image generated by a magnetic resonance imaging (MRI) system are disclosed. The apparatus includes a magnetic field generating device configured to create an inhomogeneity in the magnetic field of an MRI system and prevent at least one out-of-field excitation during imaging.Type: GrantFiled: March 22, 2018Date of Patent: June 7, 2022Assignee: VIEWRAY TECHNOLOGIES, INC.Inventors: Thomas Chmielewski, Shmaryu M. Shvartsman
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Patent number: 11353530Abstract: Systems and methods for generating a three-dimensional image of an object from multiple two-dimensional images acquired using a magnetic resonance imaging (“MRI”) system are provided. The three-dimensional image has high spatial resolution in all three spatial dimensions. The multiple two-dimensional images can be acquired in one or more orientations (e.g., axial, coronal, sagittal, oblique). The in-plane resolution of these images can be several times finer than the through-plane resolution (i.e., the slice thickness). The images are Fourier transformed along their respective slice orientation direction and processed using the slice profile to generate a Fourier representation of the three-dimensional image with the target spatial resolution. Inverse Fourier transforming this Fourier representation generates the desired three-dimensional image.Type: GrantFiled: January 25, 2019Date of Patent: June 7, 2022Assignee: Mayo Foundation for Medical Education and ResearchInventors: Stephen J. Riederer, Eric A. Borisch, Roger C. Grimm, Soudabeh Kargar
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Patent number: 11353532Abstract: The invention relates to a magnetic resonance imaging system (100) for determining an approximation (150) of an electric conductivity distribution within a three-dimensional anatomical structure of interest. The determining comprises acquiring a first set of (3-n)-dimensional magnetic resonance data (144), reconstructing a (3-n)-dimensional phase distribution (146) using the (3-n)-dimensional magnetic resonance data (144), calculating a (3-n)-dimensional electric conductivity distribution (148) using spatial derivatives within the (3-n) dimensions and applying to the (3-n)-dimensional electric conductivity distribution (148) a scaling factor compensating for the relative reduction of dimensions by n.Type: GrantFiled: March 11, 2019Date of Patent: June 7, 2022Assignee: Koninklijke Philips N.V.Inventors: Ulrich Katscher, Christian Findelkee, Jochen Keupp
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Patent number: 11353531Abstract: The present disclosure discloses a method for measuring relaxation time of ultrashort echo time magnetic resonance fingerprinting. In the method, semi-pulse excitation and semi-projection readout are adopted to shorten echo time (TE) to achieve acquisition of an ultrashort T2 time signal; and image acquisition and reconstruction are based on magnetic resonance fingerprint imaging technology. A TE change mode of sinusoidal fluctuation is introduced, so that distinguishing capability of a magnetic resonance fingerprint signal to short T2 and ultrashort T2 tissues is improved, and multi-parameter quantitative imaging of the short T2 and ultrashort T2 tissues and long T2 tissues is realized.Type: GrantFiled: May 9, 2020Date of Patent: June 7, 2022Assignee: ZHEJIANG UNIVERSITYInventors: Hongjian He, Qing Li, Huihui Ye, Xiaozhi Cao, Jianhui Zhong, Qiuping Ding
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Patent number: 11348716Abstract: Systems and methods for reclaiming and remagnetizing permanent magnet motors such as may be used in electric submersible pumps. In one embodiment, a method includes removing a permanent magnet rotor assembly from a motor and heating the rotor to burn off the residual oil and evaporate water in between laminations of the rotor and on the rotor surface. The rotor should be heated to a temperature that is above a flashpoint of oil on the rotor and below a Curie temperature of a material of a set of permanent magnets in the rotor (e.g., at least 600° F. for at least 12 hours). The heating may partially or fully demagnetize the permanent magnets in the rotor. The exposed surfaces of the rotor are then cleaned and the permanent magnets in the rotor are remagnetized using a specialized magnetizing fixture.Type: GrantFiled: December 30, 2020Date of Patent: May 31, 2022Assignee: BAKER HUGHES OILFIELD OPERATIONS LLCInventors: Yong Li, Howard G. Thompson, Arslan Amjad, James C. Clingman, Randal Perisho
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Patent number: 11337647Abstract: A magnetic resonance pulse sequence technique may acquire a water reference spectrum and two water suppressed metabolite spectra and with frequency selective inversion pulse centered at either single frequency, at multiple frequencies, or in a single acquisition. Subtraction of the inverted from non-inverted water suppressed metabolite spectrum results in single or a combination of specific metabolite peak/peaks alone with a flat baseline for easier quantification.Type: GrantFiled: April 4, 2014Date of Patent: May 24, 2022Assignee: The Trustees of the University of PennsylvaniaInventors: Ravinder Reddy, Ravi Prakash Reddy Nanga, Hari Hariharan
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Patent number: 11341642Abstract: A tissue type fraction within a biological object is determined by a phase-cycled acquisition of several images of the object and deriving a complex signal profile for each voxel of the acquired images; generating a multidimensional dictionary of simulated signal profiles, wherein each simulated signal profile is configured for simulating the previously derived complex signal profile; using a weight optimization algorithm configured for expressing the complex signal profile as a weighted sum of the simulated signal profiles, wherein the weight optimization algorithm provides as output for each voxel a matrix M of optimized weights; for each voxel and each dimension of the obtained matrix M, extracting from the matrix M a distribution of the obtained optimized weights; and determining a type of tissue composing each voxel from the obtained distributions.Type: GrantFiled: January 21, 2021Date of Patent: May 24, 2022Assignees: Siemens Healthcare GmbH, Centre Hospitalier Universitaire VaudoisInventors: Tom Hilbert, Tobias Kober, Giulia Maria Chiara Rossi, Josefina Adriana Maria Bastiaansen
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Patent number: 11340180Abstract: A method and system for determining a property of a substance using nuclear magnetic resonance (NMR) is described herein. The method includes applying a NMR pulse sequence to the substance. The NMR pulse sequence includes a first set of pulses and a second set of pulses. The first set of pulses and the second set of pulses encode for overlapping diffusion times. By overlapping diffusion times, the NMR pulse sequence can be used to measure a diffusion coefficient for a first diffusion time, a diffusion coefficient for a second diffusion time, and a correlation between the two overlapping diffusion times. This information, in turn, can be used to differentiate between intrinsic bulk diffusivity of the substance and the reduced diffusivity of the substance caused by restricted diffusion.Type: GrantFiled: March 11, 2019Date of Patent: May 24, 2022Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Jeffrey Paulsen, Yi-Qiao Song
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Patent number: 11340322Abstract: A local coil for a magnetic resonance tomograph includes a transmitting antenna for emitting a pilot tone, and a receiving antenna for receiving the pilot tone. The local coil also has a decoupling device for decoupling the receiving antenna from the transmitting antenna.Type: GrantFiled: November 7, 2019Date of Patent: May 24, 2022Assignee: Siemens Healthcare GmbHInventors: Barbara Dornberger, Robert Rehner
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Patent number: 11340442Abstract: Apparatuses, systems and methods for generating color video with a monochrome sensor include the acts of (i) selectively energizing each of a plurality of light sources in a sequence, (ii) capturing a monochrome image of the illuminated sample at a monochrome sensor at each stage of the sequence, and (iii) generating a color video from the monochrome images. The sequence can have a series of stages with each stage of the sequence corresponding to activation of a different wavelength of light from the light sources to illuminate a sample. Generating the monochrome video can include the acts of compiling a plurality of monochrome images captured at the monochrome sensor with a single light source into a series of monochrome video frames comprising the monochrome video.Type: GrantFiled: September 30, 2020Date of Patent: May 24, 2022Assignee: LIFE TECHNOLOGIES CORPORATIONInventors: Marc Berretta, Jason Mecham, Frank Metting, Jonathan Paullin, Paul Boeschoten, Erik Persmark, Eric Altendorf
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Patent number: 11340323Abstract: The techniques discussed herein relate to a reduced acoustic noise and vibration magnetic resonance imaging (MRI) acquisition. In certain implementations acoustic noise levels for one or more MRI pulse sequences are characterized and modified by limiting the frequencies and amplitudes of the gradient waveforms so as to produce less noise and vibration when the modified waveform is used during an MRI examination. In this manner, relatively low sound pressure levels can be attained.Type: GrantFiled: January 6, 2020Date of Patent: May 24, 2022Assignee: General Electric CompanyInventors: Christopher Judson Hardy, Thomas Kwok-Fah Foo, Ek Tsoon Tan
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Patent number: 11340326Abstract: A method for correcting magnetic resonance (MR) object movements includes performing a recording of an MR object with multiple echo trains. k-space data pertaining to an echo train regarded as impaired by an MR object movement is corrected by linking the k-space data to corresponding k-space data reconstructed from k-space data of other echo trains by a PPA method.Type: GrantFiled: June 30, 2020Date of Patent: May 24, 2022Assignee: Siemens Healthcare GmbHInventor: Mario Zeller
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Patent number: 11331050Abstract: In one embodiment, a magnetic resonance imaging apparatus configured to sequentially execute plural imaging sequences includes: processing circuitry configured to calculate a predicted value of Long MR Examination specific absorbed energy which is an accumulated SAR (Specific Absorption Ratio) value over the plural imaging sequences; and a display configured to display information on the predicted value with respect to a predetermined safety reference value of the Long MR Examination specific absorbed energy.Type: GrantFiled: September 2, 2020Date of Patent: May 17, 2022Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATIONInventors: Kazuya Tanoue, Takao Kasugai, Shinya Ozawa
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Patent number: 11327135Abstract: A computer-implemented method for using machine learning to suppress fat in acquired MR images includes receiving multi-echo images from an anatomical area of interest acquired using an MRI system. A first subset of the multi-echo images is acquired prior to application of contrast to the anatomical area of interest and a second subset of the multi-echo images is acquired after application of contrast to the anatomical area of interest. Next, data is generated including water images, fat images, and effective R*2 maps from the multi-echo images. The water images, the fat images, and the effective R*2 maps are used to create synthetic fat suppressed images. A neural network is trained to use the multi-echo images as input and the synthetic fat suppressed images as ground truth. A plurality of components of the neural network are saved to allow later deployment of the neural network on a computing system.Type: GrantFiled: June 30, 2020Date of Patent: May 10, 2022Assignees: Siemens Healthcare GmbH, Duke UniversityInventors: Xiaodong Zhong, Vibhas S. Deshpande, Mustafa R. Bashir
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Patent number: 11327134Abstract: In one embodiment, an MRI apparatus includes: a scanner for acquiring MR signals from an imaging region in which substances having different magnetic resonance frequencies are included; and processing circuitry. The processing circuitry is configured to: calculate phase correction data, which includes information on phase rotation amount due to non-uniformity of a static magnetic field, from MR signals; generate an image by using the phase correction data and the MR signals such that a signal from at least one of the substances in the imaging region is suppressed in the image; and perform decimation processing on first phase correction data to generate second phase correction data, based on information related to a component ratio of the plurality of substances in the imaging region and a plurality of MR signals, wherein resolution of the second phase correction data is lower than the first phase correction data.Type: GrantFiled: March 26, 2020Date of Patent: May 10, 2022Assignee: CANON MEDICAL SYSTEMS CORPORATIONInventor: Mitsuhiro Bekku
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Patent number: 11327136Abstract: The invention provides for a medical imaging system (100, 300). The medical imaging system comprises a processor (104).Type: GrantFiled: January 7, 2019Date of Patent: May 10, 2022Assignee: Koninklijke Philips N.V.Inventors: Jochen Keupp, Holger Eggers
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Patent number: 11320505Abstract: A method for magnetic resonance imaging uses an electromagnet [304], which may have open geometry, to generate a spatially nonuniform magnetic field within an imaging region [306]. The current through the electromagnet is controlled to repeatedly cycle the nonuniform magnetic field between a high strength for polarizing spins and a low strength for spatial encoding and readout. Using RF coils [308], excitation pulses are generated at a frequency that selects a non-planar isofield slice for imaging. The RF coils are also used to generate refocusing pulses for imaging and to generate spatial encoding pulses, which may be nonlinear. Magnetic resonance signals originating from the selected non-planar isofield slice of the nonuniform magnetic field in the imaging region [306] are detected using the RF coils [308] in parallel receive mode. MRI images are reconstructed from the parallel received magnetic resonance signals, e.g., using algebraic reconstruction.Type: GrantFiled: December 6, 2017Date of Patent: May 3, 2022Assignee: Yale UniversityInventors: Robert T. Constable, Yuqing Wan
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Patent number: 11320500Abstract: A cryogenic device for cooling an RF coil of a Magnetic Resonance Imaging scanner. The cryogenic device includes: a cryocooler providing a cold source; a solid thermal link; the solid thermal link in thermal contact with the cryocooler; a RF coil holder for holding the RF coil, the RF coil holder being in thermal contact with thermal link; a vacuum chamber enclosing the solid thermal link and the RF-coil holder; a measurement surface, facing the RF coil holder; wherein each one of the cryocooler, the solid thermal link, the RF coil holder and the measurement surface is magnetic material free.Type: GrantFiled: February 14, 2019Date of Patent: May 3, 2022Assignees: COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES, UNIVERSITE PARIS-SACLAYInventors: Gilles Authelet, Marie Poirier-Quinot, Bertrand Baudouy
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Patent number: 11315252Abstract: A method may include acquiring MR signals by an MR scanner and generating image data in a k-space according to the MR signals. The method may also include classifying the image data into a plurality of phases. Each of the plurality of phases may have a first count of spokes. A spoke may be defined by a trajectory for filling the k-space. The method may also include classifying the plurality of phases of the image data into a plurality of groups and determining reference images based on the plurality of groups. Each of the reference images may correspond to the at least one of the phases of the image data. The method may further include reconstructing an image sequence based on the reference images and the plurality of phases of the image data.Type: GrantFiled: May 18, 2020Date of Patent: April 26, 2022Assignee: UIH AMERICA, INC.Inventors: Jingyuan Lyu, Yu Ding, Qi Liu, Jian Xu
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Patent number: 11313931Abstract: A method for quantifying T1, T2 and resonance frequency simultaneously using magnetic resonance fingerprinting (MRF) includes accessing an MRF dictionary using a magnetic resonance imaging (MRI) system. The MRF dictionary is generated by simulating signal evolutions that include associated off-resonance effects for each signal evolution. The method further includes acquiring MRF data from a region of interest in a subject using the MRI system and a MRF pulse sequence having a plurality of radio frequency (RF) excitations and a readout associated with each RF excitation. Each readout includes a plurality of segments and each segment is used to generate a time frame. The method also include comparing the MRF data to the MRF dictionary to identify a plurality of parameters including T1, T2 and resonance frequency for the MRF data and generating a report indicating the at least one of the plurality of parameters of the MRF data.Type: GrantFiled: May 17, 2019Date of Patent: April 26, 2022Assignee: Case Western Reserve UniversityInventors: Yuchi Liu, Jesse Hamilton, Nicole Seiberlich, Mark A. Griswold
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Patent number: 11307277Abstract: A medical analysis system (111) for processing magnetic resonance imaging (MRI), data (170) from a target volume (208) in a subject (218) includes a memory (107) for storing machine executable instructions; and a processor (103) for controlling the system (111). Execution of the machine executable instructions causes the processor (103) to: determine from the MRI data (103) chemical exchange saturation transfer (CEST) voxel values corresponding to a transfer of saturation between a predefined pool of protons and water protons, the pool of protons having a predefined chemical shift; and weight the CEST values in order to distinguish CEST values of fluid-rich tissues (507) from CEST values of solid tissues (505) in the target volume (208), wherein the fluid-rich tissue comprises an amount of fluid higher than a predefined minimum amount of fluid.Type: GrantFiled: January 2, 2019Date of Patent: April 19, 2022Assignee: Koninklijke Philips N.V.Inventor: Jochen Keupp
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Patent number: 11307278Abstract: The subject matter discussed herein relates to a fast magnetic resonance imaging (MRI) method to suppress fine-line artifact in Fast-Spin-Echo (FSE) images reconstructed with a deep-learning network. The network is trained using fully sampled NEX=2 (Number of Excitations equals to 2) data. In each case, the two excitations are combined to generate fully sampled ground-truth images with no fine-line artifact, which are used for comparison with the network generated image in the loss function. However, only one of the excitations is retrospectively undersampled and inputted into the network during training. In this way, the network learns to remove both undersampling and fine-line artifacts. At inferencing, only NEX=1 undersampled data are acquired and reconstructed.Type: GrantFiled: January 2, 2020Date of Patent: April 19, 2022Assignee: General Electric CompanyInventors: Christopher Judson Hardy, Sangtae Ahn
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Patent number: 11307273Abstract: A line for an electrical connection in a magnetic resonance tomography apparatus and a magnetic resonance tomography apparatus with a corresponding line are provided. The line includes an electrical interference conductor that may pick up an electromagnetic interference signal from an environment and/or irradiate the electromagnetic interference signal into the environment. The line also includes a sensor that is electrically and/or magnetically coupled to the interference line.Type: GrantFiled: September 30, 2020Date of Patent: April 19, 2022Assignee: Siemens Healthcare GmbHInventors: Stephan Biber, Markus Vester
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Patent number: 11307271Abstract: The invention provides for a medical imaging system (100, 300). The medical imaging system (100, 300) comprises a processor (104).Type: GrantFiled: January 9, 2019Date of Patent: April 19, 2022Assignee: Koninklijke Philips N.V.Inventor: Elwin De Weerdt
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Patent number: 11307280Abstract: Described here are systems and methods for correcting motion-encoding gradient nonlinearities in magnetic resonance elastography (“MRE”). In general, the systems and methods described in the present disclosure compute gradient nonlinearity corrected displacement data based on information about the motion-encoding gradients used when acquiring magnetic resonance data.Type: GrantFiled: June 3, 2019Date of Patent: April 19, 2022Assignee: Mayo Foundation for Medical Education and ResearchInventors: Joshua D. Trzasko, Philip A. Araoz, Matthew A. Bernstein, Richard L. Ehman, Arvin Forghanian-Arani, John Huston, III, Yunhong Shu
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Patent number: 11300646Abstract: A magnetic resonance imaging apparatus according to an embodiment includes an MRI system and a processing circuitry. The MRI system includes a receiving coil to receive a magnetic resonance signal. The processing circuitry is configured to generate an image based on the magnetic resonance signal, the image including a plurality of pixels; calculate a feature value corresponding to a signal value of the pixel; correct the feature values based on a sensitivity of the receiving coil; and reduce noise in the image based on distribution of the corrected feature values.Type: GrantFiled: November 9, 2015Date of Patent: April 12, 2022Assignee: CANON MEDICAL SYSTEMS CORPORATIONInventors: Kenzo Isogawa, Toshiyuki Ono, Kenichi Shimoyama, Nobuyuki Matsumoto, Shuhei Nitta, Satoshi Kawata, Toshimitsu Kaneko, Mai Murashima
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Patent number: 11294012Abstract: A magnetic resonance imaging apparatus according to an embodiment includes sequence control circuitry and processing circuitry. The sequence control circuitry executes a first pulse sequence and a second pulse sequence, the first pulse sequence including a first spoiler pulse serving as a dephasing gradient pulse of a first amount, the second pulse sequence including a second spoiler pulse serving as a dephasing gradient pulse of a second amount being different from the first amount or the second pulse sequence not including a spoiler pulse serving as a dephasing gradient pulse. The processing circuitry performs a subtraction operation between a first data obtained from the first pulse sequence and a second data obtained from the second pulse sequence, thereby generating an image.Type: GrantFiled: February 26, 2020Date of Patent: April 5, 2022Assignee: CANON MEDICAL SYSTEMS CORPORATIONInventors: Mitsue Miyazaki, Xiangzhi Zhou, Aiming Lu
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Patent number: 11294014Abstract: Among the various aspects of the present disclosure is the provision of methods and systems for real-time 3D MRI that combines dynamic keyhole data sharing with super-resolution imaging methods to improve real-time 3D MR images in the presence of motion.Type: GrantFiled: March 9, 2020Date of Patent: April 5, 2022Assignee: Washington UniversityInventors: Taeho Kim, Chunjoo Park
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Patent number: 11294017Abstract: A navigator echo is acquired during imaging, and when frequency is corrected based on phase change, the correction is performed with high accuracy without being affected by an offset caused by variations with time. An MRI apparatus including a navigation controller is configured to control an imaging unit acquiring an NMR signal, generate the navigator echo and collect navigation data during a predetermined measurement time, prior to collection of nuclear magnetic resonance signals for reconstructing an image of a subject. The phase change of the navigator echo is analyzed during the measurement time to calculate a correction value for correcting misalignment due to the phase change with a navigation analyzer that calculates a phase change amount relative to a reference, based on a difference between the phase change of the navigator echo and the phase change of the navigator echo serving as the reference during the measurement time.Type: GrantFiled: February 24, 2021Date of Patent: April 5, 2022Assignee: FUJIFILM HEALTHCARE CORPORATIONInventor: Atsushi Kuratani
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Patent number: 11287500Abstract: A magnetic resonance imaging apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to set a rotation angle of a non-Cartesian trajectory in a k-space on the basis of information related to cyclic movements of a subject to be imaged, to obtain k-space data by rotating the non-Cartesian trajectory at the set rotation angle, and to generate an image by reconstructing the k-space data.Type: GrantFiled: October 7, 2020Date of Patent: March 29, 2022Assignee: CANON MEDICAL SYSTEMS CORPORATIONInventors: Hideaki Kutsuna, Hidenori Takeshima
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Patent number: 11287493Abstract: Embodiments of the present invention provide a magnetic resonance imaging method and system and a computer-readable storage medium.Type: GrantFiled: October 7, 2020Date of Patent: March 29, 2022Assignee: GE Precision Healthcare LLCInventors: Longqing Wang, Weinan Tang, Kun Wang, Hongbin Wang, Yongchuan Lai, Jiabin Yao
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Patent number: 11278670Abstract: A method that includes receiving, in a medication delivery module, a command to start a medication delivery from a first control module coupled to the medication delivery module, is provided. The command to start the medication delivery is based on clinical information received at the first control module. The method includes recording, in a memory of the medication delivery module, an update of the medication delivery, receiving an indication that the medication delivery module was decoupled from the first control module, and receiving an indication that the medication delivery module has become coupled with a second control module. The method also includes communicating, in response, with the second control module, to update the clinical information. A system and a non-transitory, computer readable medium storing instructions to perform the above method are also provided.Type: GrantFiled: April 26, 2018Date of Patent: March 22, 2022Assignee: CareFusion 303, Inc.Inventors: Jeffrey L. Gaetano, Gregory Borges, Eugene A. Rozell, Mark P. Bloom, Mooneer T. Salem
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Patent number: 11280865Abstract: The invention provides for a magnetic resonance imaging system (100). Machine executable instructions (140) cause a processor controlling the magnetic resonance imaging system to control (200) the magnetic resonance imaging system with the pulse sequence commands to acquire two point Dixon magnetic resonance data and single point Dixon magnetic resonance data; calculate (202) a first resolution magnetic field inhomogeneity map (148) using the two point Dixon magnetic resonance data; calculate (204) a second resolution magnetic field inhomogeneity map (154) by interpolating the first resolution magnetic inhomogeneity map to the second resolution; and calculate (206) a second resolution water image (156) and a second resolution fat image (158) using the single point Dixon magnetic resonance imaging data and the second resolution magnetic field inhomogeneity map. The first resolution is lower than the second resolution.Type: GrantFiled: January 9, 2019Date of Patent: March 22, 2022Assignee: Koninklijke Philips N.V.Inventor: Holger Eggers
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Patent number: 11280866Abstract: A magnetic resonance imaging method includes performing an inversion pulse sequence using an MRI system, the inversion pulse sequence producing an inversion recovery period, and during the inversion recovery period: (i) performing a longitudinal T2 encoding pulse sequence using the MRI system; (ii) acquiring a post longitudinal T2 encoding pulse sequence image signal block immediately following the longitudinal T2 encoding pulse sequence using the MRI system; and (iii) acquiring an additional image signal block either before the longitudinal T2 encoding pulse sequence or following the acquiring of the post longitudinal T2 encoding pulse sequence image signal block using the MRI system. The method further include generating calculated image data based on at least the post longitudinal T2 encoding pulse sequence image signal block using a self-correcting normalization image combination scheme.Type: GrantFiled: June 13, 2019Date of Patent: March 22, 2022Assignee: University of Pittsburgh—Of the Commonwealth System of Higher EducationInventors: Jullie W. Pan, Chan-Hong Moon, Hoby Hetherington
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Patent number: 11276561Abstract: A plasma etching method using a Faraday cage, comprising: providing a Faraday cage having a mesh portion on an upper surface thereof in a plasma etching apparatus; providing a quartz substrate having a metal mask with an opening provided on one surface of the metal mask in the Faraday cage; and patterning the quartz substrate with plasma etching.Type: GrantFiled: October 19, 2018Date of Patent: March 15, 2022Assignee: LG CHEM, LTD.Inventors: Eun Kyu Her, Chung Wan Kim, Song Ho Jang, Bu Gon Shin, Jeong Ho Park, Jung Hwan Yoon, So Young Choo
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Biologically applicable water-soluble heterogeneous catalysts for para-hydrogen induced polarization
Patent number: 11273431Abstract: A heterogeneous catalyst composition for para-hydrogen induced polarization includes ligand-capped nanoparticles dispersed in water. The ligand-capped nanoparticles include metal nanoparticles that are surface functionalized with organic ligands, a molecular weight of the organic ligands is no greater than 300 g/mol, and the organic ligands each includes multiple binding moieties as coordinates sites for binding to a nanoparticle surface.Type: GrantFiled: October 31, 2017Date of Patent: March 15, 2022Assignees: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, CEDARS-SINAI MEDICAL CENTERInventors: Louis Bouchard, Shawn Wagner, Stefan Gloeggler -
Patent number: 11275139Abstract: Systems and methods for determining proton spectral characteristics associated with a pair of targets from an MRI data volume are provided. The methods can include identifying spectral widths and peak-to-peak distance associated with the targets from the MRI data volume. The targets could include water and fat. The identified proton spectral characteristics can be useful for accurate spectral fat saturation, improving dynamic shim routines, and optimizing bandwidth of radiofrequency pulses used in multi-slice or multi-band excitation.Type: GrantFiled: May 17, 2021Date of Patent: March 15, 2022Assignee: Siemens Healthcare GmbHInventors: Venkata Veerendranadh Chebrolu, Peter Kollasch, Michael Wullenweber, Andreas Schäfer, Johann Sukkau
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Patent number: 11269035Abstract: A method for magnetic resonance imaging (MRI) may include cause, based on a pulse sequence, a magnetic resonance (MR) scanner to perform a scan on an object. The pulse sequence may include a steady-state sequence and an acquisition sequence that is different from the steady-state sequence. The steady-state sequence may correspond to a steady-state phase of the scan in which no MR data is acquired. The acquisition sequence may correspond to an acquisition phase of the scan in which MR data of the object is acquired. The method may also include generating one or more images of the object based on the MR data.Type: GrantFiled: April 29, 2020Date of Patent: March 8, 2022Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.Inventor: Xiaomao Gong
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Patent number: 11266324Abstract: Systems and methods for performing fast multi-contrast magnetic resonance imaging (“MRI”) are provided. In general, data are acquired from both multiple echo times (“TEs”) and at multiple effective inversion times (“TIs”). Following the application of a magnetization preparation radio frequency (“RF”) pulse, a plurality of different multi-echo acquisitions are performed, thereby acquiring data from multiple different TEs during different portions of the longitudinal magnetization recovery curve. Data acquisition in these inner encoding loops (i.e., during each multi-echo acquisition) can be accelerated to efficiently provide for the acquisition of multiple contrasts in the time normally required to acquire a single contrast.Type: GrantFiled: April 24, 2015Date of Patent: March 8, 2022Assignee: THE GENERAL HOSPITAL CORPORATIONInventors: Jonathan Polimeni, Andre Van Der Kouwe, Matthew Tisdall, Bruce Fischl
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Patent number: 11266325Abstract: Radiofrequency (RF) coil unit and a housing for the RF coil unit is provided. The RF coil unit can include a substantially annular body having a concave indent along a longitudinal direction along the substantially annular body such that when a head of the patient is inserted into an interior of the substantially annular body, at least a portion of the head of the patient is viewable and accessible from a location exterior to the substantially annular body. The housing for the RF coil unit can include a channel to receive the RF coil unit of a MRI device. The housing can enclose regions with high voltages (e.g., 1000 Volts) and/or separate these regions from patient body parts by, for example, including insulating material, thereby enhancing a safety of the patient.Type: GrantFiled: March 9, 2017Date of Patent: March 8, 2022Assignee: Aspect Imaging Ltd.Inventors: Shmuel Azulay, James William Luther, Amiel Raziel Greenberg, Ofri Vaisman, Itzchak Rabinovitz
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Patent number: 11269173Abstract: Computer-assisted surgical systems and methods provide intraoperative playback of and interaction with recorded video images and/or a 3D model while displaying current video images. The methods and related surgical systems involve capturing, by a two-dimensional (2D) or three-dimensional (3D) video camera, current video images and recording the captured video images. A user interface displays the current video images and the recorded video images and/or the 3D model and enables a user to interact with either or both of them.Type: GrantFiled: June 4, 2020Date of Patent: March 8, 2022Assignee: COVIDIEN LPInventors: John W. Komp, Irena Cantrall, Francesca Rossetto, Robert W. Pierce, Fiona A. Morrison, Mark N. Florio
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Patent number: 11262426Abstract: A system and method for simultaneous multi-slice nuclear spin tomography is provided which requires no sensitivity profile of a receiving coil along a slice axis. A pulse space region to be sampled can be specified. A first pulse space dimension (ky) can be assigned to a first phase-encoded axis and a second pulse space dimension (kz) can be assigned to a second phase-encoded axis and the second phase-encoded axis corresponds to the slice axis. A sampling scheme can also be specified, and a complete sampled can be provided along the second pulse space dimension (kz). A magnetic resonance scan can then be carried out within the pulse space region to be sampled based on the sampling scheme and respective phase-encodings of the first and second phase-encoded axis.Type: GrantFiled: February 28, 2020Date of Patent: March 1, 2022Assignee: Siemens Healthcare GmbHInventor: Thorsten Feiweier
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Patent number: 11255940Abstract: In a method and system, a reference dataset is recorded using a reference scan based on a GRE or RA RT sequence. A correction dataset is also recorded using a phase correction scan based on a non-phase-encoding EPI sequence. A measurement dataset is recorded using an SMS sequence. Slice-specific GRAPPA kernels are determined from the reference dataset and magnetic resonance images are created by a slice GRAPPA method. Data of the measurement dataset belonging to different slices is separated from one another using the slice-specific GRAPPA kernels and N/2 ghost artifacts are corrected using the correction dataset.Type: GrantFiled: September 18, 2019Date of Patent: February 22, 2022Assignee: Siemens Healthcare GmbHInventor: Mario Zeller
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Patent number: 11255932Abstract: Disclosed herein are a magnetic-field-generating coil system, an imaging system having the magnetic-field-generating coil system, and a method for operating the imaging system. The method for operating an imaging system includes generating multiple Linear Gradient Fields (LGFs) in respective axial directions by controlling coil currents, and acquiring MRI information or Magnetic Particle Imaging (MPI) information about an object while moving the multiple LGFs by varying the coil currents.Type: GrantFiled: September 16, 2019Date of Patent: February 22, 2022Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Hyo-Bong Hong, Jae-Chan Jeong, Seung-Min Choi, Jin-Sun Kim
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Patent number: 11255942Abstract: In one embodiment, a magnetic resonance imaging apparatus includes memory circuitry configured to store a predetermined program; and processing circuitry configured, by executing the predetermined program, to set an FSE type pulse sequence in which an excitation pulse is followed by a plurality of refocusing pulses, the plurality of the refocusing being divided into at least a first pulse group subsequent to the excitation pulse and a second pulse group subsequent to the first pulse group, the first pulse group including refocusing pulses having a predetermined high flip angle, and the second pulse group including refocusing pulses having flip angles decreased from the predetermined high flip angle toward a flip angle of zero, and generate an image of an object from respective MR signals corresponding to the plurality of refocusing pulses acquired by applying the fast spin echo type pulse sequence to the object.Type: GrantFiled: August 30, 2016Date of Patent: February 22, 2022Assignee: Canon Medical Systems CorporationInventors: Mitsue Miyazaki, Keiichiro Ishi
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Patent number: 11255943Abstract: For determination of motion artifact in MR imaging, motion of the patient in three dimensions is used with a measurement k-space line order based on one or more actual imaging sequences to generate training data. The MR scan of the ground truth three-dimensional (3D) representation subjected to 3D motion is simulated using the realistic line order. The difference between the resulting reconstructed 3D representation and the ground truth 3D representation is used in machine-based deep learning to train a network to predict motion artifact or level given an input 3D representation from a scan of a patient. The architecture of the network may be defined to deal with anisotropic data from the MR scan.Type: GrantFiled: October 17, 2018Date of Patent: February 22, 2022Assignee: Siemens Healthcare GmbHInventors: LuoLuo Liu, Xiao Chen, Silvia Bettina Arroyo Camejo, Benjamin L. Odry, Mariappan S. Nadar
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Patent number: 11253154Abstract: A method and system for imaging a body using a magnetic resonance imaging (MRI) apparatus, including motion tracking of a target object of the body using MRI by generating an MRI image of a region of interest of the body by performing a weighted combination of a signal received by each coil of an MRI apparatus during an MRI scan.Type: GrantFiled: August 26, 2020Date of Patent: February 22, 2022Assignees: Siemens Healthcare GmbH, King's College, LondonInventors: Christoph Forman, Radhouene Neji, Karl-Philipp Kunze, Rene Botnar, Claudia Prieto
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Patent number: 11249162Abstract: Techniques are disclosed related to the compensation of phase offsets introduced into k-space lines as a result of encoding of blip gradients due when motion is present, which may be used for parallel magnetic resonance imaging (MRI) techniques such as blipped SMS or blipped CAIPIRINHA. The compensation of these additional phase offsets may prevent artifacts that would otherwise be present in the reconstructed images as a result of motion during the MRI scanning procedure. The additional phase offsets may be accounted for during the image acquisition phase of the MRI scan or, alternatively, during the image reconstruction phase.Type: GrantFiled: August 4, 2020Date of Patent: February 15, 2022Assignees: Siemens Healthcare GmbH, The General Hospital CorporationInventors: Daniel Nicolas Splitthoff, Daniel Polak, Kawin Setsompop, Borjan Gagoski
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Patent number: 11246982Abstract: A method that includes receiving, in a medication delivery module, a command to start a medication delivery from a first control module coupled to the medication delivery module, is provided. The command to start the medication delivery is based on clinical information received at the first control module. The method includes recording, in a memory of the medication delivery module, an update of the medication delivery, receiving an indication that the medication delivery module was decoupled from the first control module, and receiving an indication that the medication delivery module has become coupled with a second control module. The method also includes communicating, in response, with the second control module, to update the clinical information. A system and a non-transitory, computer readable medium storing instructions to perform the above method are also provided.Type: GrantFiled: April 26, 2018Date of Patent: February 15, 2022Assignee: CareFusion 303, Inc.Inventors: Jeffrey L. Gaetano, Gregory Borges, Eugene A. Rozell, Mark P. Bloom, Mooneer T. Salem
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Patent number: 11249068Abstract: A non-invasive, continuous, and direct system for detecting the presence of malaria parasites that exploits the paramagnetic properties of hemozoin in red blood cells. An electromagnetic probe (EM probe) is comprised of a dual coaxial coil used to detect iron oxide particles by using sensitive lock-in amplification of detector voltage or phase shift.Type: GrantFiled: November 9, 2016Date of Patent: February 15, 2022Assignee: Ohio State Innovation FoundationInventors: Vishwanath V. Subramaniam, Mark Drew, Brad Smith, Joseph West, Travis H. Jones