To Obtain Localized Resonance Within A Sample Patents (Class 324/309)
  • Patent number: 11506735
    Abstract: A method for magnetic resonance imaging (MRI) may include obtaining a magnetic resonance (MR) image of a subject, wherein the MR image may be acquired based on a first MRI device and include at least one region of interest (ROI) of the subject. The method may also include selecting, based on the MR image and an ROI determination model, a portion of a main magnetic field generated by the first MRI device. The selected portion of the main magnetic field may correspond to the at least one ROI. The method may also include performing a magnetic field homogenization operation on the selected portion of the main magnetic field.
    Type: Grant
    Filed: May 15, 2020
    Date of Patent: November 22, 2022
    Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventor: Yuhang Shi
  • Patent number: 11508070
    Abstract: Disclosed is a system and method for segmentation of selected data. In various embodiments, automatic segmentation of fiber tracts in an image data may be performed. The automatic segmentation may allow for identification of specific fiber tracts in an image.
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: November 22, 2022
    Assignee: Medtronic Navigation, Inc.
    Inventors: Rowena Vigh, Hallehsadat Ghaderi, Daniel H. Adler, Shai Ronen, Nikhil Mahendra
  • Patent number: 11500051
    Abstract: A magnetic resonance tomography system has an interference suppression transmitter and an interference suppression antenna. The interference suppression transmitter is configured to output an interference suppression signal via the interference suppression antenna as a function of a transmission interference suppression parameter determined from a patient property. In a predetermined region of an environment of the magnetic resonance tomography system, a field strength of the excitation pulse is reduced by destructive interference.
    Type: Grant
    Filed: April 6, 2021
    Date of Patent: November 15, 2022
    Assignee: Siemens Healthcare GmbH
    Inventors: Stephan Biber, Jürgen Nistler, Rainer Schneider, Markus Vester
  • Patent number: 11500052
    Abstract: Systems and methods for late gadolinium enhancement (“LGE”) tissue viability imaging in a dynamic (e.g., temporally-resolved) manner using magnetic resonance imaging (“MRI”) are provided. Dynamic LGE images can be generated throughout the entire cardiac cycle at high temporal resolution in a single breath-hold. Dynamic, semi-quantitative longitudinal relaxation maps are acquired and retrospective synthetization of dynamic LGE images is implemented using those semi-quantitative longitudinal relaxation maps.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: November 15, 2022
    Assignee: REGENTS OF THE UNIVERSITY OF MINNESOTA
    Inventors: Sebastian Weingaertner, Mehmet Akcakaya
  • Patent number: 11500044
    Abstract: A method of enhancing the nuclear spin polarization of target molecules (10) uses a hyperpolarized source material (12) that is co-confined with the target molecules (10) in a porous molecular matrix (20). The matrix (20) may be a D4R-polysiloxane copolymer such as polyoligosiloxysilicone number two (PSS-2) that has recesses of an appropriate diameter. A source material (12), such as parahydrogen, is transferred to the matrix (20) together with the target molecules (10), and an external pressure is applied to force them into the recesses of the matrix (20). The nano-confinement of the source material (12) and target molecules (10) together enables or enhances a transfer of spin polarization from the source material (12) to the target molecules (10). When the target molecules (10) are removed from the matrix (20), the enhanced spin polarization greatly enhances the signal strength of the target molecules (10) in any subsequent magnetic resonance measurement.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: November 15, 2022
    Inventors: Eric Breynaert, Johan Martens, Francis Taulelle, Pieter Leo Hendrik Verlooy, Jean-Max Tyburn, James Kempf
  • Patent number: 11490815
    Abstract: Described herein are methods and systems for extracting or determining subject motion from multi-channel electrical coupling in imaging of the subject, in particular in magnetic resonance (MR) imaging of the subject. The motion can be of a region of interest of the subject (such as an organ or specific tissue). Changes in the position of the subject and the subjects organs can be monitored by measuring how external coils, such as RF coils, couple to the subject and to one another and change the scattering of the RF coils, for example scattering of RF pulses transmitted by the coils. Changes in position influence this coupling and the scattering and can be detrimental to the quality of the imaging The present methods and systems address and overcome this problem.
    Type: Grant
    Filed: March 24, 2018
    Date of Patent: November 8, 2022
    Assignee: OXFORD UNIVERSITY INNOVATION LIMITED
    Inventors: Aaron Hess, Matthew Robson
  • Patent number: 11493583
    Abstract: 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: Grant
    Filed: November 3, 2021
    Date of Patent: November 8, 2022
    Assignee: Siemens Healthcare GmbH
    Inventors: Waqas Majeed, Himanshu Bhat, Axel Joachim Krafft
  • Patent number: 11486949
    Abstract: A T1-T2* measurement which permits speciation of different components with restricted mobility in samples where a T1-T2 measurement is impossible is disclosed. Tracking the T1-T2* coordinate, and associated signal intensity changes, can reveal additional structural and/or dynamic information such as phase changes in rigid/semi-rigid biopolymer samples or pore level changes in morphology of the water environments in cement-based materials. In another aspect, the T1-T2* measurement may also be employed to discriminate composition in solid mixtures, a very significant analytical problem in industry. In a further aspect, the T1-T2* measurement has particular value in permitting a simple assignment of T1 to different T2* populations.
    Type: Grant
    Filed: August 3, 2020
    Date of Patent: November 1, 2022
    Assignee: University of New Brunswick
    Inventors: Bryce MacMillan, Bruce Balcom, Razieh Enjilela, Armin Afrough
  • Patent number: 11486953
    Abstract: Techniques are disclosed related to the compensation of phase variations introduced into k-space lines, which cause imaging artifacts. The techniques utilize the detection of motion via an encoding plus motion model, which does not require the use of additional prospective or retrospective motion detection techniques. The techniques described herein use the encoding plus motion model to reconstruct an initial image from a set of motion states, and then calculate phase information from images that are projected form the initial reconstructed image using a projection onto convex sets (POCS). The phase information is incorporated into the encoding plus motion model over several iterations to minimize data consistency error, thereby generating a refined image that compensates for patient motion over the set of motion states.
    Type: Grant
    Filed: September 2, 2021
    Date of Patent: November 1, 2022
    Assignees: Siemens Healthcare GmbH, The General Hospital Corporation
    Inventors: Daniel Polak, Kawin Setsompop, Stephen Farman Cauley
  • Patent number: 11488334
    Abstract: In a method for operating a magnetic resonance (MR) apparatus, MR raw-data is acquired from an acquisition region of a patient for a sampling region of k-space using a MR sequence that employs ultrashort echo times; a first MR image dataset is reconstructed from the MR raw-data of the k-space region; a second MR image dataset is reconstructed from the MR raw-data in a central subregion of the sampling region in k-space; a resolution of the second MR image dataset is interpolated to increase the resolution of the second MR image dataset to a resolution of the first magnetic resonance image dataset; and the first and second MR image datasets are combined to obtain an output MR image dataset.
    Type: Grant
    Filed: December 31, 2020
    Date of Patent: November 1, 2022
    Assignee: Siemens Healthcare GmbH
    Inventor: David Grodzki
  • Patent number: 11486954
    Abstract: In a medical imaging auto-calibrated reconstruction method, an imaging scan is performed using a data acquisition scanner to generate image data, calibration data having a uniform sampling is determined, a point-spread function is determined based on the calibration data, and an image is reconstructed from the image data based on the point-spread function. A central region of k-space may have uniform sampling. The calibration data may be determined by extracting a uniformly-sampled central region of k-space from the image data. An outer region of k-space may have non-uniform sampling. A calibration scan may be performed to generate the calibration data.
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: November 1, 2022
    Assignees: Siemens Healthcare GmbH, The General Hospital Corporation
    Inventors: Daniel Polak, Stephen Farman Cauley
  • Patent number: 11474170
    Abstract: A B0-mapping method determines the spatial distribution of a static magnetic field in a pre-selected imaging zone comprising computation of the spatial distribution of a static magnetic field from a spatial distribution of spin-phase accruals between magnetic resonance echo signals from the imaging zone and an estimate of the proton density distribution in the imaging zone. The invention provides the field estimate also in cavities and outside tissue. Also the field estimate of the invention suffers less from so-called phase-wraps.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: October 18, 2022
    Assignee: Koninklijke Philips N.V.
    Inventor: Miha Fuderer
  • Patent number: 11474174
    Abstract: The present disclosure provides a method for using a magnetic resonance system to measure magnetization data from a region of interest in a subject having a spin system that includes at least a first labile spin species and a second labile spin species experiencing chemical exchange. The method includes applying periodic radiofrequency irradiation to the spin system using a frequency swept pulse sequence having frequency and amplitude modulation functions, wherein sweeping a frequency of the RF irradiation together with amplitude modulation generates a magnetic field component having an effective field. The method further includes generating off resonance side bands in a frequency domain positioned adjacent the resonant frequency of the first labile spin species or the second labile spin species by applying the periodic RF irradiation to induce the instantaneous flip of the effective field with periodicity of RF irradiation tuned to the chemical shift difference of the exchanging sites.
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: October 18, 2022
    Assignee: REGENTS OF THE UNIVERSITY OF MINNESOTA
    Inventors: Shalom Michaeli, Timo Liimatainen, Hanne Laakso, Silvia Mangia
  • Patent number: 11474179
    Abstract: In a method for MRI of an object, spins of a first material and spins of a second material are excited. An in-phase echo signal is acquired when the spins are in-phase and an out-of-phase echo signal is acquired, when the spins are out of phase. A first image for the first material and/or a second image for the second material is generated by a computing unit depending on the in-phase echo signal and the out-of-phase echo signal. For acquiring the out-of-phase echo signal, a momentum space is sampled asymmetrically in a read-out direction.
    Type: Grant
    Filed: January 14, 2021
    Date of Patent: October 18, 2022
    Assignee: Siemens Healthcare GmbH
    Inventors: Nadine Dispenza, Dominik Paul, Manuel Stich, Mario Zeller
  • Patent number: 11474177
    Abstract: In a method for MRI where k-space describing spatial frequencies in an acquisition volume (AV) is scanned, a first measured data acquisition is performed in the AV with a first gradient field strength of a gradient field, including irradiating a RF pulse into the AV and acquiring a first series of measured values spaced apart temporally, a second measured data acquisition is performed with a second, different gradient field strength, including irradiating a RF pulse into the AV and acquiring a second series of measured values spaced apart temporally. With the first measured data acquisition, the first measured values for a respective response signal are acquired at a first time interval from one another and with the second measured data acquisition, the second measured values for a respective response signal are acquired at a second, different time interval from one another.
    Type: Grant
    Filed: January 14, 2021
    Date of Patent: October 18, 2022
    Assignee: Siemens Healtchare GmbH
    Inventor: David Grodzki
  • Patent number: 11474184
    Abstract: The present disclosure relates to operating an MR system in which MR signals of an object under examination are acquired in an examining region using a multi echo imaging sequence, in which an RF excitation pulse and a plurality of RF refocusing pulses are applied. The techniques include determining a first accumulated phase of a magnetization in the object under examination. Then, a second accumulated phase of the magnetization in the object under examination is determined due to concomitant magnetic fields occurring between a second pair of consecutive RF pulses. Finally, it is determined whether a deviation from the predefined relationship is larger than a threshold and, if this is the case, a measure is applied in view of the fact that the deviation is larger than the threshold.
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: October 18, 2022
    Assignee: Siemens Healthcare GmbH
    Inventors: George William Ferguson, Michael Koehler, Constantin von Deuster
  • Patent number: 11474183
    Abstract: A magnetic resonance (MR) imaging method of correcting motion in precorrection MR images of a subject is provided. The method includes applying, by an MR system, a pulse sequence having a k-space trajectory of a blade being rotated in k-space. The method also includes acquiring k-space data of a three-dimensional (3D) imaging volume of the subject, the k-space data of the 3D imaging volume corresponding to the precorrection MR images and acquired by the pulse sequence. The method further includes receiving a 3D MR calibration data of a 3D calibration volume, wherein the 3D calibration volume is greater than or equal to the 3D imaging volume, jointly estimating rotation and translation in the precorrection MR images based on the k-space data of the 3D imaging volume and the calibration data, correcting motion in the precorrection images based on the estimated rotation and the estimated translation, and outputting the motion-corrected images.
    Type: Grant
    Filed: July 8, 2021
    Date of Patent: October 18, 2022
    Assignee: GE PRECISION HEALTHCARE LLC
    Inventors: Shaorong Chang, Xucheng Zhu, Ali Ersoz, Ajeetkumar Gaddipati, Moran Wei
  • Patent number: 11467240
    Abstract: A method for accelerating diffusion magnetic resonance imaging (MRI) acquisition via slice interleaved diffusion encoding (SIDE) includes conducting a plurality of simultaneous multislice (SMS) excitations for each of a plurality of SIDE diffusion-weighted volumes to obtain SMS images of an MRI subject at different diffusion orientations, regrouping the images into slice groups with different orientations, generating a plurality of slice-undersampled diffusion weighted volumetric images of the subject, wherein each of the plurality of slice-undersampled diffusion weighted volumetric images is produced by cyclically interleaving the slice groups, such that each slice group is associated with a different diffusion wavevector, and reconstructing a full diffusion-weighted volumetric image of the subject by providing the plurality of slice-undersampled diffusion weighted volumetric images to a neural network trained to produce full diffusion-weighted volumetric versions of diffusion magnetic resonance images from
    Type: Grant
    Filed: December 31, 2020
    Date of Patent: October 11, 2022
    Assignee: THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL
    Inventors: Pew-Thian Yap, Yoonmi Hong, Wei-Tang Chang
  • Patent number: 11464496
    Abstract: A patient monitor that acquires and displays first vital sign information and second vital sign information of a subject includes an event detection unit that is configured to detect an activation start event for starting an activation process of biological information processing software which performs a process pertaining to the second vital sign information and an activating event for activating the biological information processing software and a software control unit that causes the biological information processing software to be in a standby state, in which a part of the activation process of the biological information processing software has been performed, when the activation start event is detected by the event detection unit, and causes the biological information processing software to be in an active state from the standby state when the activating event is detected by the event detection unit.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: October 11, 2022
    Assignee: NIHON KOHDEN CORPORATION
    Inventors: Mitsuhiro Oura, Sou Kumagai, Wataru Matsuzawa, Nobuyuki Yasumaru, Kazuya Nagase, Hiroshi Torigai, Naoki Fukushima
  • Patent number: 11468982
    Abstract: A medical imaging apparatus with a medical scanner unit and at least one display is described, as well as a method for actuating at least one display of a medical imaging apparatus. The techniques disclosed are based on a medical imaging apparatus with a medical scanner unit, a computing unit which is connected to a master unit, and at least one display. The at least one display may include a slave unit, and the master unit may be connected to the slave unit by means of a data connection.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: October 11, 2022
    Assignee: Siemens Healthcare GmbH
    Inventors: Philipp Hoecht, Harald Karl, Felix Wolf
  • Patent number: 11457871
    Abstract: A medical scan artifact detection system is operable to receive a medical scan of a patient. Artifact detection data is generated by executing an artifact detection function on the medical scan, where the artifact detection data indicates at least one artifact detected in the medical scan that includes a motion artifact or a nipple shadow. A notification is generated for display via a display device, where the notification indicates the at least one artifact.
    Type: Grant
    Filed: July 27, 2020
    Date of Patent: October 4, 2022
    Assignee: Enlitic, Inc.
    Inventors: Kevin Lyman, Ben Covington, Anthony Upton, David Di Domenico
  • Patent number: 11452461
    Abstract: Techniques are disclosed for positioning a patient within a patient receiving area for a magnetic resonance examination. The techniques may include positioning the patient on a mobile patient table of a patient support facility and moving the patient table in a first horizontal direction until a region of the patient to be examined is arranged in a field of view of a patient receiving area of a magnetic resonance system. Moreover, the patient positioning techniques may include moving the patient table in a second horizontal direction and/or in a vertical direction within the patient receiving area, and acquiring medical magnetic resonance data of the region of the patient to be examined.
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: September 27, 2022
    Assignee: Siemens Healthcare GmbH
    Inventor: Joerg Roland
  • Patent number: 11454690
    Abstract: A synergized pulsing-imaging network is described. A method of optimizing a magnetic resonance imaging (MRI) system includes optimizing, by a synergized pulsing-imaging network (SPIN) circuitry a pulse sequence based, at least in part, on a loss function associated with a reconstruction network. The method further includes optimizing, by the SPIN circuitry, the reconstruction network based, at least in part, on intermediate raw MRI data and based, at least in part, on a ground truth MRI image data. The intermediate raw MRI data is determined based, at least in part on the pulse sequence.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: September 27, 2022
    Assignee: Rensselaer Polytechnic Institute
    Inventors: Ge Wang, Qing Lyu, Tao Xu
  • Patent number: 11454689
    Abstract: A magnetic resonance imaging apparatus according to an embodiment includes sequence controlling circuitry and processing circuitry. The sequence controlling circuitry is configured to execute a first pulse sequence including application of a Magnetization Transfer (MT) pulse and to subsequently execute a second pulse sequence including application of an MT pulse after an action that causes a change in a physiological state of a patient. The processing circuitry is configured to generate a first Z-spectrum based on data obtained by executing the first pulse sequence, to generate a second Z-spectrum based on data obtained by executing the second pulse sequence, and to generate data by performing an analysis based on the first Z-spectrum and the second Z-spectrum.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: September 27, 2022
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventor: Mitsue Miyazaki
  • Patent number: 11452462
    Abstract: A Magnetic Resonance Imaging (MRI) system, including: two separate static magnetic field generators, which are each cylindrical, are axially aligned, and are separated by a rotary load-bearing structure arranged to freely rotate about an axis of a static magnetic field generated by the static magnetic field generators, wherein the rotary load-bearing structure is mounted on thrust bearings which take an axial load between the static magnetic field generators.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: September 27, 2022
    Assignee: Siemens Healthcare Limited
    Inventor: Michael Mallett
  • Patent number: 11454691
    Abstract: Systems and methods to determine a first map of a first parameter based on first signals acquired by a magnetic resonance imaging system, the first map associating each of a plurality of voxels with a respective value of the first parameter, the first parameter quantifying a first physical characteristic of an object represented by the plurality of voxels, determine a second map of a second parameter based on the first signals, the second map associating each of the plurality of voxels with a respective value of the second parameter, the second parameter quantifying a second physical characteristic of the object, and determine a dark-blood phase-sensitive inversion recovery late gadolinium enhancement image based on the first map of the first parameter and on the second map of the second parameter.
    Type: Grant
    Filed: September 13, 2021
    Date of Patent: September 27, 2022
    Assignees: Siemens Healthcare GmbH, The United States of America, as represented by the Secretary, Department of Health and Human Services
    Inventors: Peter Kellman, Hui Xue, Kelvin Chow
  • Patent number: 11455728
    Abstract: A diagnosis support device acquires medical image data representing a medical image obtained by imaging an animal as a subject with a medical image capturing device and type information representing a type which is classified by at least one of a body length or weight of the animal and to which the subject belongs, and determines presence or absence of an abnormality in the medical image of the subject based on the acquired medical image data and type information and a learned model learned in advance using a set of a plurality of pieces of the medical image data for learning and the type information.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: September 27, 2022
    Assignee: FUJIFILM Corporation
    Inventors: Takeshi Fukuda, Haruyasu Nakatsugawa
  • Patent number: 11448717
    Abstract: Techniques are disclosed to leverage the use of convolutional neural networks or similar machine learning algorithms to predict an underlying susceptibility distribution from MRI phase data, thereby solving the ill-posed inverse problem. These techniques include the use of Deep Quantitative Susceptibility “DeepQSM” mapping, which uses a large amount of simulated susceptibility distributions and computes phase distribution using a unique forward solution. These examples are then used to train a deep convolutional neuronal network to invert the ill-posed problem.
    Type: Grant
    Filed: December 31, 2018
    Date of Patent: September 20, 2022
    Assignee: Siemens Healthcare GmbH
    Inventors: Kieran O'Brien, Markus Barth, Steffen Bollmann
  • Patent number: 11439313
    Abstract: Methods and apparatus for determining at least one metabolic state of a subject using a nuclear magnetic resonance (NMR) monitoring device. The NMR monitoring device comprises at least one magnet configured to generate a primary magnetic field, a transceiver coil arranged within the primary magnetic field, wherein the transceiver coil is configured to apply a time series of radiofrequency (RF) pulses to a portion of a subject located within the primary magnetic field and detect an NMR signal generated in response to application of the time series of RF pulses, and an NMR spectrometer communicatively coupled to the transceiver coil. The NMR spectrometer is configured to process the detected NMR signal to determine at least one metabolic state of the subject.
    Type: Grant
    Filed: May 16, 2017
    Date of Patent: September 13, 2022
    Assignee: BITOME, INC.
    Inventors: Herbert B. Ryan, Jens Peter Höfflin, Trevor H. Kemp
  • Patent number: 11442127
    Abstract: The present disclosure provides a method of DDCE-MRF. The method can include: a) introducing two or more contrast agents to a region of interest (ROI) of a subject, the two or more contrast agents having different relaxivities; b) measuring a T1 relaxation time and a T2 relaxation time for locations within the ROI using magnetic resonance fingerprinting (MRF); c) determining, using equations that relate the different relaxivities, the T1 relaxation time, the T2 relaxation time, and concentrations of the two or more contrast agents, the concentrations of the two or more contrast agents for each of the locations within the ROI; and d) producing an image depicting the ROI based, at least in part, on the concentrations of the two or more contrast agents.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: September 13, 2022
    Assignee: Case Western Reserve University
    Inventors: Chris Flask, Christian Anderson, Xin Yu, Nicole Steinmetz, Mark A. Griswold, Susann Brady-Kalnay
  • Patent number: 11439341
    Abstract: A treatment efficacy of a treatment for treating a parkinsonian disease is determined. A first set of imaging information/data associated with a dMRI scan of an individual's brain captured at a first time and a second set of imaging information/data associated with a dMRI scan of the individual's brain captured at a second time are received. The individual underwent the treatment for a time period comprising at least part of the time between the first and second times. An expected change between the first and second times is determined based on a natural progression of the parkinsonian disease. The first and second sets of imaging information/data are analyzed to determine a first free-water pattern and a second free-water pattern. Based on the first and second free-water patterns, a disease progression score is determined. Based on the disease progression score and the expected change, a treatment efficacy for treating the individual with the treatment is determined.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: September 13, 2022
    Assignee: University of Florida Research Foundation, Incorporated
    Inventor: David E. Vaillancourt
  • Patent number: 11443430
    Abstract: A diagnosis support device acquires medical image data representing a medical image obtained by imaging an animal as a subject with a medical image capturing device and head species information representing a head species of the subject and determines presence or absence of an abnormality in the medical image of the subject based on the acquired medical image data and head species information and a learned model learned in advance using a set of a plurality of pieces of the medical image data for learning and the head species information.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: September 13, 2022
    Assignee: FUJIFILM Corporation
    Inventors: Takeshi Fukuda, Haruyasu Nakatsugawa
  • Patent number: 11439314
    Abstract: An image processing apparatus according to an embodiment includes processing circuitry. The processing circuitry generates an image by performing an analysis based on a Z-spectrum generated based on data obtained by executing a pulse sequence including application of a Magnetization Transfer (MT) pulse and causes a display to display the generated image by dividing the image into a plurality of segments.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: September 13, 2022
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventor: Mitsue Miyazaki
  • Patent number: 11435418
    Abstract: Optionally adjustable head coil system and methods for enhancing and/or optimizing magnetic resonance imaging, involving a housing, the housing having at least one portion, the at least one portion having a lower portion, an upper portion, and opposing side portions, each at least one portion optionally in movable relation to any other portion for facilitating adjustability, each at least one portion configured to accommodate at least one radio-frequency coil, and the upper and lower portions each optionally configured to overlap and engage the opposing side portions for facilitating decoupling the at least one radio-frequency coil, and a tongue portion optionally in movable relation to any other portion for facilitating adjustability, engageable with the lower portion, and fixably couple-able with a transporter.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: September 6, 2022
    Assignee: SYNAPTIVE MEDICAL INC.
    Inventors: William Wai-Leung Lau, Alexander Gyles Panther, Gilbert Thevathasan, Mark Tullio Morreale
  • Patent number: 11428767
    Abstract: A computer-implemented method is disclosed for providing an actuation sequence which specifies transmit signals for at least one high-frequency transmit channel of an antenna arrangement of a magnetic resonance device for acquiring measurement data of an object under investigation by the magnetic resonance device. The method includes providing different actuation sequences, wherein each sequence is the result of an optimization method and which differs with regard to the value of an optimization parameter taken into account in the course of the optimization method. The method further includes providing a plurality of field distribution maps, (e.g., at least one B0 map and/or at least one B1 map), acquired by the or a further magnetic resonance device from the object under investigation. The method further includes selecting the actuation sequence to be used from the different actuation sequences depending on the field distribution maps and providing the actuation sequence to be used.
    Type: Grant
    Filed: October 12, 2020
    Date of Patent: August 30, 2022
    Assignee: Siemens Healthcare GmbH
    Inventors: Rene Gumbrecht, Jürgen Herrler, Patrick Liebig, Armin Nagel
  • Patent number: 11428769
    Abstract: An MRI device for executing an imaging operation at least three times or more with a different combination of at least a repetition time and a flip angle in the same imaging sequence, includes: a receiving unit which receives information specifying an imaging target and a constraint condition relating to an imaging time or quantitative value accuracy; and a scan parameter set generation unit which calculates at least three or more scan parameter sets having a different combination of at least the repetition time and the flip angle on the basis of the constraint condition. The MRI device uses three or more scan parameter sets generated by the optimal scan parameter set generation unit and calculates quantitative values (T1, T2,and the like) of the imaging target from a plurality of images obtained by the imaging operation.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: August 30, 2022
    Assignee: FUJIFILM HEALTHCARE CORPORATION
    Inventors: Suguru Yokosawa, Yo Taniguchi, Tomoki Amemiya, Toru Shirai, Hisaaki Ochi
  • Patent number: 11428763
    Abstract: A planar inverse anapole microresonator includes: an anapolic substrate; an anapolic conductor that includes a first and second inverse anapolic pattern; each inverse anapolic pattern including: a semi annular arm that terminates in a first arm tendril and a second arm tendril; and a medial arm terminating at a medial tip, and the medial tip of the first inverse anapolic pattern opposes the medial tip of the second inverse anapolic pattern, such that the medial tip of the first inverse anapolic pattern is separated from the medial tip of the second inverse anapolic pattern by a medial gap, and the planar inverse anapole microresonator produces a magnetic field region that concentrates a magnetic field localized between the medial tip of the first inverse anapolic pattern and the medial tip of the second inverse anapolic pattern in response to the planar inverse anapole microresonator being subjected to microwave radiation.
    Type: Grant
    Filed: February 25, 2021
    Date of Patent: August 30, 2022
    Assignee: GOVERNMENT OF THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF COMMERCE
    Inventors: Veronika Ann Szalai, Amit Kumar Agrawal, Nandita Abhyankar
  • Patent number: 11422216
    Abstract: Systems and methods for generating a gradient waveform for use by a low-field MRI system to generate a gradient magnetic field are provided herein. The gradient waveform can be determined using first information indicative of the gradient waveform and second information indicative of hardware constraints of the low-field MRI system including a maximum voltage of the gradient power amplifier, a maximum slew rate of the gradient coil, a resistance of the gradient coil, and an inductance of the gradient coil. In some embodiments, the gradient waveform can be a trapezoidal gradient waveform determined to have a non-linear ramp-up portion and/or a non-linear ramp-down portion.
    Type: Grant
    Filed: March 23, 2021
    Date of Patent: August 23, 2022
    Assignee: Hyperfine Operations, Inc.
    Inventors: Hadrien A. Dyvorne, Laura Sacolick, Rafael O'Halloran, Carole Lazarus, Michael Twieg
  • Patent number: 11422282
    Abstract: A method for nuclear magnetic resonance (NMR) logging is disclosed that pulses, using a quadrature antenna of an NMR logging tool in a borehole, a circularly polarized (CP) signal into a formation surrounding the borehole. The method also pulses, using the quadrature antenna, a reverse circularly polarized (RCP) signal into the formation. A sensor of the NMR logging tool detects a first NMR signal from the formation in response to the RCP pulses and a second NMR signal from the formation in response to the CP pulses. A correct transverse magnetization value is then recovered based, at least in part, on the first NMR signal and the second NMR signal.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: August 23, 2022
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Yunzhao Xing, Rebecca Corina Jachmann
  • Patent number: 11415650
    Abstract: The disclosure relates to a gradient system comprising a first gradient coil unit, a second gradient coil unit and a flexible gradient amplifier unit, wherein the flexible gradient amplifier unit is configured to actuate the first gradient coil unit and the second gradient coil unit.
    Type: Grant
    Filed: August 14, 2020
    Date of Patent: August 16, 2022
    Assignee: Siemens Healthcare GmbH
    Inventor: Martin Hammes
  • Patent number: 11415652
    Abstract: Multi-dimensional spectra associated with a specimen are reconstructed using lower dimensional spectra as constraints. For example, a two-dimensional spectrum associated with diffusivity and spin-lattice relaxation time is obtained using one-dimensional spectra associated with diffusivity and spin-lattice relaxation time, respectively, as constraints. Data for a full two dimensional spectrum are not acquired, leading to significantly reduced data acquisition times.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: August 16, 2022
    Assignee: The United States of America, as represented by the Secretary, Department of Health and Human Services
    Inventors: Peter J. Basser, Dan H. Benjamini
  • Patent number: 11415656
    Abstract: A medical image processing apparatus of embodiments includes processing circuitry. The processing circuitry is configured to acquire a data and a g-factor map. The data is generated as a result of a reception by an RF coil. The processing circuitry is configured to determine strength of denoise performed on the data on the basis of the g-factor map and perform the denoise on the data.
    Type: Grant
    Filed: January 28, 2020
    Date of Patent: August 16, 2022
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Kensuke Shinoda, Kazuto Nakabayashi, Hitoshi Kanazawa, Kazuya Okamoto, Hiroshi Takai, Nobuyuki Konuma, Yuichi Yamashita
  • Patent number: 11409192
    Abstract: A magnetically shielded room reducing pressure felt by a person inside includes an upper shielding body, a side periphery shielding body, and a lower shielding body, all of which define a magnetically shielded inner space. A magnifying lens is located in the upper shielding body. The magnifying lens can magnify and project an incident image from outside to a range of one inner side surface of the magnetically shielded room. so that the range should be 50% or more of the area of the one inner side surface. The range includes most of the area above a line of sight of a person in the magnetically shielded room. The magnifying lens is provided at a position closer to the one inner side surface as a projection target of the lens than the other inner side surface as a non-projection target facing the one inner side surface as the projection target.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: August 9, 2022
    Assignee: TDK Corporation
    Inventor: Tomohiko Shibuya
  • Patent number: 11406276
    Abstract: A system including a magnetic resonance imaging system having a magnet and first and second sidewalls positioned on opposite sides of an imaging field of the magnet, and a subject support configured to support a subject that is positioned in an upright position. The system may be capable of imaging a target anatomy of the subject while the subject is in the upright position, and may further include a motor for translating the subject support between first and second positions within and outside of the imaging field of the magnet, respectively. The subject support may include a seat on which the subject may sit facing the subject support, such that the subject's back can be operated on and imaged while the subject is in an upright position.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: August 9, 2022
    Assignee: Fonar Corporation
    Inventors: Raymond V. Damadian, Luciano B. Bonanni
  • Patent number: 11410271
    Abstract: A method for enhancing a set of object scan images may be provided. The set of object scan images comprises at least two scan images. The method comprises determining first distance and determining an interpolated scan image, by applying an interpolation algorithm comprising determining any pixel of the interpolated scan image as a white pixel if the corresponding pixels on the scan images are both white. The same applies to black pixels. The method may further comprise determining any pixel which corresponding pixels are black on one of the two image scans and white on the other image scans as white (black) if a predefined percentage of the directly surrounding pixels is white (black) in the interpolated scan image. Furthermore, the method comprises inserting the interpolated scan image between the first scan image and the second scan image and repeating the above steps until a stop condition is met.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: August 9, 2022
    Assignee: International Business Machines Corporation
    Inventors: Maria H. Oleszkiewicz, Blazej R. Rutkowski, Wojciech Sobala, Piotr Padkowski
  • Patent number: 11408957
    Abstract: High-quality magnetic resonance (MR) recordings are triggered with movements of an object, for example the heartbeat. In a method and apparatus for obtaining raw data reconstruction for an MR image, a spin-echo-based sequence is executed that includes applying a static magnetic field and applying a magnetization pulse train. A movement of the object to be imaged is detected and a target contrast for two tissue types of the object is prespecified. The repetition time of the pulse train is set in dependence on the movement of the object to be imaged, and the flip angle is set such that prespecified target contrast for the two tissue types is obtained at the set repetition time.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: August 9, 2022
    Assignee: Siemens Healthcare GmbH
    Inventors: Hans-Peter Fautz, Dominik Paul
  • Patent number: 11410758
    Abstract: A medical scan artifact detection system is operable to receive, via a receiver, a medical scan of a patient. Artifact detection data is generated by executing an artifact detection function on the medical scan, where the artifact detection data indicates at least one artifact detected in the medical scan. A notification is transmitted, via a transmitter, a client device for display via a display device, where the notification indicates the at least one artifact.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: August 9, 2022
    Inventors: Kevin Lyman, Anthony Upton, David Di Domenico
  • Patent number: 11410353
    Abstract: The invention provides for a medical imaging system (100, 300) comprising a processor (106) for controlling the medical imaging system. Execution of machine executable instructions (112) causes the processor to receive (200) a static angiographic image (114) of a region of interest (322), receive (202) a time series of angiographic images (116, 116?) of the region of interest, construct (204) an image mask (118) using the static angiographic image, determine (206) a time dependent signal (120) for each voxel within the image mask using the time series of angiographic images, construct (208) a composite angiographic image by: assigning (210) a fill time (126) to each voxel within the image mask using an extremum (124) of the time dependent signal if the extremum deviates from an average of the time dependent signal more than a predetermined threshold, and identifying (212) voxels within the image mask as being unfilled voxels.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: August 9, 2022
    Assignee: Koninklijke Philips N.V.
    Inventors: Michael Gunter Helle, Thomas Lindner
  • Patent number: 11399732
    Abstract: 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: Grant
    Filed: March 9, 2017
    Date of Patent: August 2, 2022
    Assignee: Aspect Imaging Ltd.
    Inventors: Shmuel Azulay, James William Luther, Amiel Raziel Greenberg, Ofri Vaisman, Itzchak Rabinovitz, Shaul Bilu, Tobi Reuveni
  • Patent number: 11402444
    Abstract: An arrangement that enables performing of both magnetic particle imaging and magnetic resonance imaging and a device including the arrangement are provided. The arrangement that enables performance of both magnetic particle imaging and magnetic resonance imaging includes: at least one primary magnetic element pair configured to generate a selection magnetic field (SMF1/SMF2) for magnetic particle imaging, at least one secondary magnetic element pair configured to generate a driving magnetic field, and at least one tertiary magnetic element pair configured to generate a focus magnetic field (FMF).
    Type: Grant
    Filed: April 30, 2021
    Date of Patent: August 2, 2022
    Assignee: ASELSAN ELEKTRONIK SAN. VE TIC. A. S.
    Inventor: Can Baris Top