With Triggering Or Gating Device Patents (Class 600/413)
  • Patent number: 10338179
    Abstract: Embodiments relate to acquiring magnetic resonance (MR) images with suppressed residual blood signal in the early cardiac phases, leading to images with a preferred dark-blood appearance throughout the entire cardiac cycle, which improves accuracy of subsequent post-processing algorithms. The acquisition of the desired blood suppressed tissue images is achieved through a double inversion recovery pulse in DENSE sequences. The double inversion recovery pulse is applied after an electrocardiogram (ECG) trigger at a beginning point of a repetition time period, followed by a displacement encoding module at an inversion time during the repetition time period and a readout module comprised of a plurality of frames during a remainder of the repetition time period. The displacement encoding module applies a labelling process on the tissue, while the readout module applies an un-labelling process. The readout module comprises an imaging sequence adapted to acquire DENSE images.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: July 2, 2019
    Assignees: Siemens Healthcare GmbH, Emory University
    Inventors: Xiaodong Zhong, John Oshinski, Deqiang Qiu, Amit Saindane
  • Patent number: 10293182
    Abstract: Systems and methods directed to adaptive radiotherapy planning are provided. In some aspects, provided system and method include producing synthetic images from magnetic resonance data using relaxometry maps. The method includes applying corrections to the data and generating relaxometry maps therefrom. In other aspects, a method for adapting a radiotherapy plan is provided. The method includes determining an objective function based on dose gradients from an initial dose distribution, and generating an optimized plan based on updated images, using aperture morphing and gradient maintenance algorithms without need for organ-at-risk contouring.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: May 21, 2019
    Assignee: The Medical College of Wisconsin, Inc.
    Inventors: X. Allen Li, Eric S. Paulson, Ergun Ahunbay, Cun-geng Yang, Vern Hart
  • Patent number: 10226233
    Abstract: Provided is an ultrasound diagnostic apparatus that measures the modulus of elasticity of a vascular wall, wherein only M-mode images for heartbeats necessary for the measurement are displayed. The problem is solved by, when freeze is implemented during a B/M-mode display, displaying an M-mode image after discarding a heartbeat at the time of freeze and possibly also a heartbeat immediately before freeze.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: March 12, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Masafumi Noguchi, Yukiya Miyachi
  • Patent number: 10219722
    Abstract: An apparatus (300, 400, 500) comprising a magnetic resonance imaging system (302), the magnetic resonance imaging system comprising: a magnet (306) adapted for generating a magnetic field for orientating the magnetic spins of nuclei of a subject (310) located within an imaging volume (308); a radio frequency transceiver (320) adapted for acquiring magnetic resonance data (346) using a radio frequency coil (318); a computer system (336) comprising a processor (338), wherein the computer system is adapted for controlling the apparatus; and a memory (342, 344) containing machine readable instructions (354, 356, 358, 360, 362), wherein execution of the instructions cause the processor to perform the steps of: acquiring (100, 204) magnetic resonance data using the magnetic resonance imaging system, wherein the magnetic resonance data comprises transverse relaxometry data, and calculating (102, 206) the temperature of the subject within a temperature measurement volume (332) in accordance with the transverse relaxo
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: March 5, 2019
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventor: Jukka Ilmari Tanttu
  • Patent number: 10188361
    Abstract: A computer-implemented method for providing a multi-modality visualization of a patient includes receiving one or more image datasets. Each image dataset corresponds to a distinct image modality. The image datasets are segmented into a plurality of anatomical objects. A list of clinical tasks associated with displaying the one or more image datasets are received. A machine learning model is used to determine visualization parameters for each anatomical object based on the list of clinical tasks. Then, a synthetic display of the image datasets is created by presenting each anatomical object according to its corresponding visualization parameters.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: January 29, 2019
    Assignee: Siemens Healthcare GmbH
    Inventors: Bernhard Geiger, Shaohua Kevin Zhou, Carol L. Novak, Daguang Xu, David Liu
  • Patent number: 10145927
    Abstract: The present invention provides a method for magnetic resonance (MR) imaging of a region of interest (142) of a subject of interest (120) under application of a scanning sequence (200) comprising at least one pre-pulse (202, 204) and multiple readouts (206), whereby the multiple readouts (206) are performed after the at least one pre-pulse (202, 204) with different configurations causing different image contrasts, comprising the steps of performing a preparation phase comprising applying at least one scanning sequence (200) to provide a set of reference readouts (206) using the different configurations, and generating a set of navigator images (210) with one navigator image (210) of the region of interest (142) for each configuration of the reference readouts (206), performing an examination phase comprising applying at least one scanning sequence (200), whereby at least one image (212) of the region of interest (142) is generated for each scanning sequence (200), determining motion of the subject of interest
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: December 4, 2018
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Tobias Ratko Voigt, Markus Olaf Samuel Henningsson
  • Patent number: 10132898
    Abstract: Described here are a system and method for obtaining multiple different images when performing a single scan of a subject with a magnetic resonance imaging (“MRI”) system. The scan includes the application of two or more magnetization preparation radio frequency (“RF”) pulses, such as inversion recovery (“IR”) pulses. Data is acquired after the application of each magnetization preparation RF pulse, thus allowing the acquisition of multiple different images of the subject in a single scan. Using this approach, the same information that used to require multiple different scans of the subject can be acquired in one single scan, and in less time than would be required to perform the multiple scans.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: November 20, 2018
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Steven Ryan Kecskemeti, Andrew L. Alexander
  • Patent number: 10117597
    Abstract: An MRI image processing and analysis system may identify instances of structure in MRI flow data, e.g., coherency, derive contours and/or clinical markers based on the identified structures. The system may be remotely located from one or more MRI acquisition systems, and perform: perform error detection and/or correction on MRI data sets (e.g., phase error correction, phase aliasing, signal unwrapping, and/or on other artifacts); segmentation; visualization of flow (e.g., velocity, arterial versus venous flow, shunts) superimposed on anatomical structure, quantification; verification; and/or generation of patient specific 4-D flow protocols. An asynchronous command and imaging pipeline allows remote image processing and analysis in a timely and secure manner even with complicated or large 4-D flow MRI data sets.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: November 6, 2018
    Assignee: ARTERYS INC.
    Inventors: Fabien Beckers, Albert Hsiao, John Axerio-Cilies, Torin Arni Taerum, Daniel Marc Raymond Beauchamp
  • Patent number: 10052037
    Abstract: A system for non-invasively determining an indication of an individual's blood pressure is described. In certain embodiments, the system calculates pulse wave transit time using two acoustic sensors. The system can include a first acoustic sensor configured to monitor heart sounds of the patient corresponding to ventricular systole and diastole and a second acoustic sensor configured to monitor arterial pulse sounds at an arterial location remote from the heart. The system can advantageously calculate a arterial pulse wave transit time (PWTT) that does not include the pre-ejection period time delay. In certain embodiments, the system further includes a processor that calculates the arterial PWTT obtained from the acoustic sensors. The system can use this arterial PWTT to determine whether to trigger an occlusive cuff measurement.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: August 21, 2018
    Assignee: Masimo Corporation
    Inventors: Eric Karl Kinast, Valery G. Telfort
  • Patent number: 10054659
    Abstract: In a method for recording magnetic resonance data in a target region of a patient while the target region moves due to respiration a single-shot turbo spin echo sequence is used as a magnetic resonance sequence in a magnetic resonance apparatus. SPAIR fat saturation is used by emitting an inversion pulse at an inversion time before the data recording with the magnetic resonance apparatus. Multiple repetitions of the sequence of an inversion pulse, an inversion time and a data recording using the magnetic resonance sequence are triggered by a respiratory signal describing the respiratory cycle, each repetition occurring upon fulfillment of a recording criterion. At least one further inversion pulse is emitted in a waiting time between the sequences.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: August 21, 2018
    Assignee: Siemens Aktiengesellschaft
    Inventors: Antje Kickhefel, Dominik Paul
  • Patent number: 10029121
    Abstract: Systems and methods directed to adaptive radiotherapy planning are provided. In some aspects, provided system and method include producing synthetic images from magnetic resonance data using relaxometry maps. The method includes applying corrections to the data and generating relaxometry maps therefrom. In other aspects, a method for adapting a radiotherapy plan is provided. The method includes determining an objective function based on dose gradients from an initial dose distribution, and generating an optimized plan based on updated images, using aperture morphing and gradient maintenance algorithms without need for organ-at-risk contouring.
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: July 24, 2018
    Assignee: The Medical College of Wisconsin, Inc.
    Inventors: X. Allen Li, Eric S. Paulson, Ergun Ahunbay, Cun-geng Yang, Vern Hart
  • Patent number: 10024791
    Abstract: A cylindrical optical tomography system includes a light emitting array having a plurality of light emitting elements, a cylindrical sample holding element, and a light sensing array including a plurality of light sensing elements, wherein the light sensing array is configured to sense light emitted from the light emitting array which has passed through the sample holding module.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: July 17, 2018
    Inventor: Lester F. Ludwig
  • Patent number: 9945922
    Abstract: A medical imaging apparatus includes a detector unit, a patient-receiving area at least partially surrounded by the detector unit, and a motion capture unit. The motion capture unit includes at least one first motion capture sensor for capturing patient monitoring data relating to a motion of the patient, and at least one second motion capture sensor for the capture of further motion data relating to a motion of the first motion capture sensor.
    Type: Grant
    Filed: September 13, 2014
    Date of Patent: April 17, 2018
    Assignee: Siemens Aktiengesellschaft
    Inventor: Thomas Benner
  • Patent number: 9839366
    Abstract: An MRI apparatus includes an imaging data acquiring unit and a blood flow information generating unit. The imaging data acquiring unit acquires imaging data from an imaging region including myocardium, without using a contrast medium, by applying a spatial selective excitation pulse to a region including at least a part of an ascending aorta for distinguishably displaying inflowing blood flowing into the imaging region. The blood flow information generating unit generates blood flow image data based on the imaging data.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: December 12, 2017
    Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventors: Mitsue Miyazaki, Shigehide Kuhara
  • Patent number: 9772389
    Abstract: In a method and magnetic resonance apparatus to acquire diagnostic image data of a contrast agent-filled target area of a patient, a peak time of the test bolus in the target area is automatically determined, from which a wait period is then determined for administering the main bolus. After the main bolus has been administered to the patient, magnetic resonance images of the target area are acquired, and each is analyzed immediately after acquisition thereof to determine whether that image shows arrival of the contrast agent. If and when one of these images shows such arrival, an acquisition protocol is immediately started in order to acquire the diagnostic image data set. If none of these images shows arrival of the contrast agent, the protocol to acquire diagnostic image data is started after the wait period.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: September 26, 2017
    Assignee: Siemens Aktiengesellschaft
    Inventors: Manuela Rick, Peter Schmitt, Andre de Oliveira
  • Patent number: 9754366
    Abstract: A method includes determining a change in a volume of a tissue of interest located in at least two data sets between the at least two data sets. The at least two image data sets include a first image data set acquired at a first time and a second image data set acquired at a second time, and the first and second times are different. The method includes generating a rendering which includes a region in which the tissue of interest is located and indicia that indicates a magnitude of the change across the region. The region is superimposed over the rendering, which is generated based on at least one of the at least two image data sets, and linked to a corresponding image respectively in the at least two image data sets including voxels representing tissue of interest. The method includes visually presenting the rendering in a graphical user interface.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: September 5, 2017
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Rafael Wiemker, Sven Kabus, Tobias Klinder
  • Patent number: 9700220
    Abstract: A magnetic resonance imaging apparatus includes an imaging condition setting unit, a scan performing unit and a blood flow image generating unit. The imaging condition setting unit sets a sequence accompanying application of a motion probing gradient pulse as an imaging condition. The scan performing unit performs an imaging scan according to the sequence. The blood flow image generating unit generates a blood flow image based on data acquired by the imaging scan.
    Type: Grant
    Filed: April 25, 2007
    Date of Patent: July 11, 2017
    Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventors: Mitsue Miyazaki, Hitoshi Kanazawa
  • Patent number: 9585575
    Abstract: Elicited MRI signals are processed into MR image data in conjunction (a) with use of an initial spatially-selective RF tag pulse (tag-on) and (b) without use of an initial spatially-selective NMR RF tag pulse (tag-off) in respectively corresponding data acquisition subsequences. Multi-dimensional tag-on and tag-off data acquisition subsequences are used for each of plural time-to-inversion (TI) intervals without using an injected contrast agent. Acquired image data sets are subtracted for each TI interval to produce difference values as a function of time representing blood perfusion for the ROI that differentiates between normal, ischemic and infarct tissues.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: March 7, 2017
    Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventors: Mitsue Miyazaki, Xiangzhi Zhou, Tsutomu Hoshino
  • Patent number: 9532728
    Abstract: An image processing apparatus stores data for a series of images associated with a range including a heart and diaphragm of an object. A temporal change in a moving amount of the diaphragm and a temporal change in a moving amount of the heart are generated from the series of images, and a ratio of (a) the moving amount of the heart to (b) the moving amount of the diaphragm is calculated.
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: January 3, 2017
    Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventors: Shigehide Kuhara, Ayako Ninomiya
  • Patent number: 9513113
    Abstract: Systems and methods are provided for optical topology detection and illumination. Embodiments provide an integrated system, and methods of operation thereof, where the integrated system includes an illumination system and an optical topology detection system, and where at least a portion of the spectral content of illumination light from the illumination system is within an optical detection bandwidth of the optical topology detection system, and where the operation of the optical topology detection system and the illumination system are interleaved to avoid crosstalk, such that the optical topology detection system detects the optical topology detection light when the illumination system is not emitting illumination light. The system may include, and control the operation of, an optical navigation system. The components of the system may be mounted to a rigid frame to maintain calibration.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: December 6, 2016
    Assignee: 7D SURGICAL, INC.
    Inventors: Victor Yang, Adrian Linus Dinesh Mariampillai, Beau Anthony Standish, Michael Ka Kit Leung
  • Patent number: 9504429
    Abstract: An MRI system is provided that includes a physiological sensor used for gating the MRI system and an MRI control terminal wirelessly connected to the sensor. The physiological sensor is used to monitor a physiological parameter of a user, such as pressure pulse, and communicate data regarding the monitored physiological parameter to the MRI control terminal. The MRI control terminal processes the data received from the physiological sensor and determines whether a triggering condition on the data is met. When it is determined that the triggering condition is met, the MRI control terminal initiates the acquisition of a data set. The acquisition of the data set involves initiating a pre-programmed pulse sequence and acquiring RF signals emitted from the patient's tissue as a result of the execution of the pre-programmed pulse sequence.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: November 29, 2016
    Assignee: Fonar Corporation
    Inventor: Lawrence A. Minkoff
  • Patent number: 9427200
    Abstract: A method for determining physiological cardiac parameters as a function of a heart rate is provided. For at least two heart rates adjusted by a cardiac stimulation during the recording, in each case, a four-dimensional image data set of the heart showing the entire cardiac cycle is recorded using an X-ray device. The physiological cardiac parameters are determined by evaluation of the four-dimensional image data sets.
    Type: Grant
    Filed: March 21, 2014
    Date of Patent: August 30, 2016
    Assignee: Siemens Aktiengesellschaft
    Inventor: Yiannis Kyriakou
  • Patent number: 9366754
    Abstract: An ultrasound imaging system and method includes acquiring first 4D ultrasound data of a first partial volume for a first period of time that is longer than an estimated cardiac period and acquiring second 4D ultrasound data of a second partial volume for a second period of time that is longer than the estimated cardiac period. The system and method includes combining the first 4D ultrasound data with the second 4D ultrasound data to generate 4D ultrasound data of a region-of-interest. The system and method also includes generating and displaying an image based on the 4D ultrasound data.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: June 14, 2016
    Assignees: General Electric Company, n22e.u., myotise.u.
    Inventors: Daniel John Buckton, Christian Fritz Perrey, Dieter Claus Hoenigmann, Armin Schoisswohl
  • Patent number: 9364166
    Abstract: In order to make it possible to set the optimal breath-holding imaging conditions according to the subject without extension of an imaging time or the sacrifice of image quality, one scan is divided into one or more breath-holding measurements and free-breathing measurements on the basis of the imaging conditions of a breath-holding measurement, which are input and set according to the subject, and a region of the k space measured in the breath-holding measurement is controlled. Preferably, in the breath-holding measurement, low-frequency data of the k space is measured. Moreover, preferably, imaging conditions of the breath-holding measurement include the number of times of breath holding or a breath-holding time, and the operator can set any of these values.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: June 14, 2016
    Assignee: Hitachi, Ltd.
    Inventor: Yasuhiro Kamada
  • Patent number: 9345437
    Abstract: In a method for determining a respiratory phase from a series of measurements of a respiratory position, the respiratory phase is determined by a finite state machine, which processes a current measured respiratory position and at least one previously measured respiratory position, and assigns a current respiratory phase to the current respiratory position. For this purpose, the temporal spacing between two successive measurements of the respiratory position is small in relation to a respiratory cycle. This method allows for a continuous measurement of imaging measurement data to be influenced in a prospective manner in a determined respiratory phase.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: May 24, 2016
    Assignee: Siemens Aktiengesellschaft
    Inventor: Alto Stemmer
  • Patent number: 9335392
    Abstract: In a method to acquire a magnetic resonance image data set of a target volume with a magnetic resonance device, wherein the target volume is composed of a number of sub-volumes defined in a two-dimensional plane orthogonal to the readout direction, for each sub-volume, in order to acquire a partial data set of a sub-volume, a targeted excitation of the sub-volume and a data acquisition from that sub-volume to measure the partial data set take place by radiation of a first radio-frequency pulse acting in a first direction of the plane and radiation of a second radio-frequency pulse acting in a second direction that is orthogonal to the first direction. The partial data sets are combined into the magnetic resonance data set.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: May 10, 2016
    Assignee: Siemens Aktiengesellschaft
    Inventor: Hans-Peter Fautz
  • Patent number: 9320447
    Abstract: A method, consisting of, while imaging a patient using an initial magnetic resonance imaging (MRI) sequence, receiving an initial set of electrocardiograph (ECG) signals from the patient. The method includes identifying initial noise in the initial set of ECG signals arising from the initial MRI sequence, and characterizing the initial noise in terms of frequency components thereof. The method further includes generating a relation between parameters defining the initial MRI sequence and the frequency components, computing a filter by applying the relation to the parameters of a subsequent MRI sequence, and applying the computed filter to reduce noise in a further set of ECG signals, received from the patient, while imaging the patient using the subsequent MRI sequence.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: April 26, 2016
    Assignee: BIOSENSE WEBSTER (ISRAEL) LTD.
    Inventors: Assaf Govari, Yaron Ephrath
  • Patent number: 9301706
    Abstract: A magnetic resonance imaging system uses a first RF coil for acquiring a magnetic resonance signal from a subject, and a device for estimating a cardiac phase of the subject based on the magnetic resonance signal acquired by the first RF coil. The first RF coil, for example, can be an RF coil exclusive to cardiac phase estimation. The magnetic resonance imaging system also uses a second RF coil for acquiring a magnetic resonance signal based on the estimated cardiac phase, and a device for reconstructing a magnetic resonance image of the subject based on the magnetic resonance signal acquired by the second RF coil. Thus, MRA can be performed by estimating a cardiac phase.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: April 5, 2016
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventors: Hiroshi Takai, Yoshimori Kassai
  • Patent number: 9285446
    Abstract: A shortened version of the MOLLI sequence (Sh-MOLLI) is described which generates rapid and high-resolution myocardial spin-lattice (T1) maps. The Sh-MOLLI technique is based on a significant abbreviation of pre-existing TI sampling scheme combined with the use of processing logic to bypass the major side effects of the above sampling scheme abbreviation and distinguish between long and short T1 relaxation times in order to conditionally utilize available TI samples for non-linear T1 fitting.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: March 15, 2016
    Assignee: Isis Innovation Limited
    Inventors: Stefan K. Piechnik, Matthew D. Robson, Andreas Greiser
  • Patent number: 9261575
    Abstract: For generating a three-dimensional magnetic resonance image of a respirating examination subject, the respiration of the examination subject is divided into a number of predefined clusters. Based on a measured respiratory position of the examination subject, one of these clusters is selected. The scanned k-space range is divided into a number of data acquisition shots which, by means of a particular k-space trajectory, each fill a number of k-space lines. The different shots are acquired for the different clusters until all shots of the measurement data set are assigned together to at least two adjacent clusters. The magnetic resonance image is reconstructed from those shots that are assigned to at least two adjacent clusters.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: February 16, 2016
    Assignee: Siemens Aktiengesellschaft
    Inventor: Alto Stemmer
  • Patent number: 9254098
    Abstract: Systems and methods for generating MRI images of the lungs and/or airways of a subject using a medical grade gas mixture comprises between about 20-79% inert perfluorinated gas and oxygen gas. The images are generated using acquired 19F magnetic resonance image (MRI) signal data associated with the perfluorinated gas and oxygen mixture.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: February 9, 2016
    Assignee: Duke University
    Inventors: Hal Cecil Charles, Brian J. Soher
  • Patent number: 9226684
    Abstract: A method for recording magnetic resonance image data of a patient ventilated by means of a ventilation apparatus is provided. The method includes assigning influencing information describing the effect of a respiratory movement on the image data recording to pulse sequence information, determining a magnetic resonance protocol for actuating a magnetic resonance device and a ventilation protocol for actuating the ventilation apparatus, and coordinating with one another in time, taking into account the pulse sequence information together with the influencing information, an imaging objective and a ventilation requirement, and actuating the magnetic resonance device and the ventilation apparatus in a time-coordinated manner on the basis of the magnetic resonance protocol and the ventilation protocol.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: January 5, 2016
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Sebastian Schmidt
  • Patent number: 9213075
    Abstract: A magnetic resonance imaging apparatus includes: a sequence controlling unit that, by controlling an execution of a pulse sequence, acquires magnetic resonance (MR) signals corresponding to a plurality of channels in the pulse sequence executed as a series, the MR signals being configured to be arranged into a first region of a k-space at first intervals and into a second region larger than the first region at second intervals larger than the first intervals; an arranging unit that arranges the MR signals corresponding to the channels into the k-space as k-space data; and an image generating unit that generates first-interval k-space data corresponding to the channels based on the second-interval k-space data acquired by executing the pulse sequence and generates a magnetic resonance image based on the generated first-interval k-space data, the first-interval k-space data acquired by executing the pulse sequence, and sensitivity distributions corresponding to the channels.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: December 15, 2015
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventors: Mitsue Miyazaki, Hidenori Takeshima, Tsutomu Hoshino, Satoshi Sugiura
  • Patent number: 9167987
    Abstract: A magnetic resonance imaging apparatus collects raw data about a subject in a synchronized manner with an electrocardiographic signal of the subject. An Electrocardiogram (ECG) gating unit detects an irregular synchronization interval with respect to the electrocardiographic signal. When the ECG gating unit detects an irregular synchronization interval, a real-time sequencer controls a gradient magnetic-field power source, a transmitting unit, and the like so as to reacquire raw data that is acquired during the irregular synchronization interval.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: October 27, 2015
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventor: Akio Mori
  • Patent number: 9138162
    Abstract: In a method for acquisition of a measurement data set of a respirating examination subject by magnetic resonance technology, the measurement data set is acquired by numerous individual measurements, wherein, for each individual measurement, a respiratory position and a respiratory phase are determined, based on which it is decided whether the individual measurement is to be included in the final measurement data set from which an image data set is reconstructed.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: September 22, 2015
    Assignee: Siemens Aktiengesellschaft
    Inventor: Alto Stemmer
  • Patent number: 9140770
    Abstract: A method for acquiring (1) experimental measures with interferences of a physical phenomenon, and for reconstructing (2) a point-by-point signal (3) representative of the phenomenon according to at least one dimension that can vary during the experimental measure acquisition, using at least one simulation model (4) of at least one acquisition chain of the experimental measures including at least one interference, and at least one model (8) of each interference in each acquisition chain, each interference model being determined at least from the measures themselves, wherein the simulation and interference models include adjustable parameters (6, 10) depending on experimental conditions, wherein at least one adjustable parameter of one of the models is coupled to at least one adjustable parameter of the other model, and in that the adjustable parameters are optimized in a coupled manner. A device for MRI imaging, NMR, or medical imaging using such a method is described.
    Type: Grant
    Filed: November 14, 2008
    Date of Patent: September 22, 2015
    Assignee: UNIVERSITE DE LORRAINE
    Inventors: Freddy Odille, Pierre-André Vuissoz, Jacques Felblinger
  • Patent number: 9116219
    Abstract: A system and methods for high-speed functional magnetic resonance imaging using multi-slab echo-volumar imaging (EVI), specifically a combination of multi-slab excitation and single-shot 3D encoding with parallel imaging to reduce geometrical image distortion and blurring, and to increase blood oxygenation level-dependent (BOLD) sensitivity compared to conventional echo-planar imaging (EPI).
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: August 25, 2015
    Assignee: STC.UNM
    Inventor: Stefan Posse
  • Patent number: 9116217
    Abstract: An apparatus for reconstructing 3D images by using magnetic resonance imaging (MRI) includes an image acquiring unit configured to acquire a plurality of MR images about a region of interest of an object at different angles, respectively; and an image reconstructing unit configured to reconstruct the 3D image by using the plurality of MR images, wherein the plurality of MR images include information of a slice direction about the region of interest, which is changed depending on the different angles. According to the invention, since the 3D image is reconstructed by using the MR images acquired at different angles, the 3D image may have a better SNR than the method for reconstructing 3D images of the related art.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: August 25, 2015
    Assignee: Industry Academic Cooperation Foundation, Yonsei University
    Inventors: Dong-Hyun Kim, Min-Oh Kim, Sang-Young Zho
  • Patent number: 9091740
    Abstract: A method of synchronizing clocks between a central controlling unit and a radio frequency (RF) coil which are wirelessly connected to each other in a magnetic resonance imaging (MRI) system, which includes receiving a first clock from the central controlling unit, synchronizing a second clock of the RF coil with a received first clock, and discontinuing the receiving of the first clock from the central controlling unit when the second clock is synchronized with the first clock.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: July 28, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young-cheol Kwon, Hyug-rae Cho
  • Patent number: 9081073
    Abstract: An MR system acquires, over multiple heart cycles, image datasets representing multiple image slices of an anatomical region of interest of a patient. In the device, an RF signal generator and a magnetic field gradient generator provides an RF pulse and magnetic field gradient sequence for RF signal excitation of the region of interest and for acquiring RF data following the signal excitation. The sequence comprises, a first sequence occurring substantially immediately after the acquisition of image data using a readout magnetic field gradient. The first sequence includes an RF pulse with a predetermined flip angle followed by a magnetic field gradient pulse for reducing field magnetization to substantially zero. The first sequence is preceded by a dummy acquisition sequence comprising the elements of the first sequence except substantially without acquisition of data.
    Type: Grant
    Filed: January 20, 2012
    Date of Patent: July 14, 2015
    Assignees: Siemens Medical Solutions USA, Inc., Duke University
    Inventors: Wolfgang G. Rehwald, Enn-Ling Chen, Raymond J. Kim, Elizabeth R. Jenista
  • Patent number: 9063207
    Abstract: There is provided an MRI apparatus and a blood vessel image capturing method capable of improving the separability of an artery and a vein. In order to do so, using an imaging sequence obtained by combining a first sequence portion for measuring a first echo signal used for acquisition of a blood vessel image of a desired region of an object with a second sequence portion for measuring a second echo signal used for acquisition of blood flow information of the object, the object is imaged by one examination scan. In addition, blood flow information is acquired using the second echo signal, and at least one of an artery and a vein is extracted in an image, which is reconstructed using the first echo signal, using the acquired blood flow information.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: June 23, 2015
    Assignee: HITACHI MEDICAL CORPORATION
    Inventors: Hiroyuki Itagaki, Nobuyuki Yoshizawa
  • Patent number: 9042959
    Abstract: A magnetic resonance imaging apparatus includes an acoustic control unit and an image data acquisition unit. The acoustic control unit applies a gradient magnetic field for controlling a sound in synchronization with a signal representing a respiratory body motion. The image data acquisition unit acquires imaging data by subsequently imaging to control the sound and generate image data based on the imaging data.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: May 26, 2015
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventors: Yoshimori Kassai, Shinichi Kitane
  • Publication number: 20150126850
    Abstract: A method for acquiring cine images using a magnetic resonance imaging (MRI) system includes selecting an asymmetric radial sampling scheme providing an asymmetric view of k-space corresponding to a desired image resolution. Radial k-space data is acquired using the asymmetric radial sampling scheme, wherein slice-orientation of the radial k-space data is continuously modified while acquiring the radial k-space data. A plurality of cine images are reconstructed from the radial k-space data using a compressed-sensing method.
    Type: Application
    Filed: November 3, 2014
    Publication date: May 7, 2015
    Inventors: Hasan Ertan Cetingul, Mariappan S. Nadar, Peter Speier, Michaela Schmidt
  • Publication number: 20150119696
    Abstract: In a method to operate a magnetic resonance device to acquire magnetic resonance data of an acquisition region of a patient that is moving due to respiration, a breath hold command is automatically given to the patient by an output unit of the magnetic resonance apparatus before acquisition of the magnetic resonance data, and the acquisition of the magnetic resonance data is begun automatically given a trigger signal determined from measurement data of the patient, the trigger signal indicating that breath is being held.
    Type: Application
    Filed: October 30, 2014
    Publication date: April 30, 2015
    Applicant: Siemens Aktiengesellschaft
    Inventor: Andre de Oliveira
  • Patent number: 9014783
    Abstract: A system automatically calculates optimal protocol parameters for dark-blood (DB) preparation and inversion recovery. The system automatically determines pulse sequence timing parameters for MR imaging with blood related signal suppression. The system comprises an acquisition processor for acquiring data indicating a patient heart rate. A pulse timing processor automatically determines an acquisition time of an image data set readout, relative to a blood signal suppression related magnetization preparation pulse sequence, by calculating the acquisition time in response to inputs including, (a) the acquired patient heart rate, (b) data indicating a type of image contrast of the pulse sequence employed and (c) data indicating whether an anatomical signal suppression related magnetization preparation pulse sequence used has a slice selective, or non-slice selective, data acquisition readout.
    Type: Grant
    Filed: March 11, 2010
    Date of Patent: April 21, 2015
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Wolfgang Rehwald, Peter Weale
  • Patent number: 9014782
    Abstract: Versatility and the quality of images are to be improved. As preparation pulses, a first RF pulse to flip along the yz plane spins oriented in a magnetostatic field direction in a subject; a velocity encoding gradient pulse which, in spins flipped by that first RF pulse, mutually shifts the phase of spins in a static state and the phase of spins in a moving state; and a second RF pulse to flip along the yz plane spins whose phase has been shifted by the velocity encoding gradient pulse are successively transmitted. After that, a killer pulse is transmitted to extinguish the transverse magnetizations of the spins flipped by the second RF pulse.
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: April 21, 2015
    Assignee: GE Medical Systems Global Technology Company, LLC
    Inventor: Mitsuharu Miyoshi
  • Patent number: 9008753
    Abstract: The present invention is directed to a method for use in conducting cardiac MR imaging which allows for reconstruction of T1 maps, cine images and IR-prepared images from one raw data set, wherein the method comprises the following steps: a) acquisition of raw data by use of an ECG-triggered, segmented, inversion recovery (IR) -prepared Look-Locker type pulse sequence for data acquisition, wherein the pulse sequence encompasses more than one shot, wherein each shot comprises: i) an ECG-triggered inversion pulse; ii) SSFP cine data acquisition of radial segmented profiles over more than one RR-interval for a predefined acquisition duration AD; and iii) a relaxation duration RD, during which no data is acquired; b) retrospective gating of raw data by sorting acquired raw data for each RR-interval into a pre-determined number of heart phases by definition of specific time windows within the RR-intervals and sampling of raw data acquired during the time windows respectively; c) image reconstruction, wherein the r
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: April 14, 2015
    Assignee: Deutsches Herzzentrum Berlin
    Inventor: Daniel Messroghli
  • Publication number: 20150094562
    Abstract: A magnetic field may be applied to a subject having a plurality of tissues, including first and second tissues, causing a net longitudinal magnetization in the tissues. An inversion radio frequency pulse may be generated to invert the longitudinal magnetization from the tissues. Heart-rate timing information associated with a current ECG of the subject may be measured, and an inversion time TI may be dynamically calculated based at least in part on the heart-rate timing information. An excitation radio frequency pulse may then be generated. The generation of the excitation radio frequency pulse may occur a period of time after the generation of the inversion radio frequency pulse, and the period of time may be based on the dynamically calculated inversion time TI. Magnetic resonance imaging data may then be acquired.
    Type: Application
    Filed: October 1, 2013
    Publication date: April 2, 2015
    Applicant: General Electric Company
    Inventors: Christopher Judson Hardy, Glenn Scott Slavin, Jeffrey Alan Stainsby, Martin Andreas Janich
  • Publication number: 20150094563
    Abstract: A magnetic resonance system configured to repeatedly execute imaging sequences each having a first RF pulse for flipping each spin in a region containing blood, and a data acquisition sequence acquiring data of the blood from the region is provided. The magnetic resonance system includes a storage unit configured to store a correspondence relation between a contrast between the blood and a background tissue, a first time taken from the first RF pulse to the data acquisition sequence, and a second time taken from a completion of an imaging sequence to a start of a next imaging sequence, first determining means configured to determine the first time used, and second determining means configured to determine the second time used.
    Type: Application
    Filed: September 30, 2014
    Publication date: April 2, 2015
    Applicant: GE MEDICAL SYSTEMS GLOBAL TECHNOLOGY COMPANY, LLC
    Inventors: Yuko Suwa, Naoyuki Takei
  • Publication number: 20150087964
    Abstract: In a method for the optimization of an imaging acquisition of an object by a medical imaging apparatus, a first time period is determined, within which a calibration process of the medical imaging apparatus is executed, a second time period is determined, within which a breathing process for at least one breathing command of a recording protocol is executed, wherein the breathing process is executed at least in part at the same time as the calibration process, and a point in time for an initiation of the imaging acquisition is determined, such that at this point in time, the calibration process and the breathing process have been completed.
    Type: Application
    Filed: September 23, 2014
    Publication date: March 26, 2015
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Miriam Keil