Patents by Inventor Arne Reykowski

Arne Reykowski has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10416251
    Abstract: A synchronization system (100, 200, 400A, 400B, 600) for magnetic resonance (MR) systems includes a main magnet (104, 404, 692) having a main bore (113, 413) and opposed first and second ends (114); a system controller (110, 610) configured to generate a clock synchronization signal in accordance with a system clock; first and second transmission antennas (132,432, TX1, TX2) at opposite ends of the main magnet and configured to transmit the clock synchronization signal into the main bore of the main magnet; and a radio frequency (RF) portion (120, 660) including at least one reception antenna (136, RX1) and a synchronizer (122). The at least one reception antenna is situated within the main bore of the main magnet and is configured to receive the clock synchronization signal transmitted by the first and second transmission antennas.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: September 17, 2019
    Assignee: Koninklijke Philips N.V.
    Inventor: Arne Reykowski
  • Publication number: 20190257900
    Abstract: A system and method synchronizes a digitizer clock of a Magnetic Resonance Imaging (MRI) device with a system clock of an imaging device. In a first method, an original reference signal is split into first and second reference signals in which the second reference signal is phase shifted to generate an orthogonal reference signal. A reliability of image data may be determined based upon a product between the first reference signal and the orthogonal reference signal. In a second method, a reference signal is transmitted from the imaging device to the MRI device and a return signal is received from the MRI device to the imaging device. A discrepancy between the digitizer clock and the system clock may be determined based upon the return signal which includes a variable time delay.
    Type: Application
    Filed: April 29, 2019
    Publication date: August 22, 2019
    Inventor: ARNE REYKOWSKI
  • Publication number: 20190212402
    Abstract: In MRI system, acquired MR signals that will have a greater impact on the quality of the final reconstructed MRI image if a data link error occurs are encoded with a higher, or more robust, level of encoding prior to being transmitted over a data communications link. Conversely, acquired MR signals that will have a lesser impact on the quality of the final reconstructed MRI image if a data link error occurs are encoded with a lower, or less robust, level of encoding prior to being transmitted over the data communications link. The overall result is improved data link robustness and efficiency for data being sent over the data link.
    Type: Application
    Filed: September 29, 2017
    Publication date: July 11, 2019
    Inventors: PAUL FRANZ REDDER, ARNE REYKOWSKI, FILIPS VAN LIERE
  • Patent number: 10302716
    Abstract: A system and method synchronizes a digitizer clock of a Magnetic Resonance Imaging (MRI) device with a system clock of an imaging device. In a first method, an original reference signal is split into first and second reference signals in which the second reference signal is phase shifted to generate an orthogonal reference signal. A reliability of image data may be determined based upon a product between the first reference signal and the orthogonal reference signal. In a second method, a reference signal is transmitted from the imaging device to the MRI device and a return signal is received from the MRI device to the imaging device. A discrepancy between the digitizer clock and the system clock may be determined based upon the return signal which includes a variable time delay.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: May 28, 2019
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventor: Arne Reykowski
  • Patent number: 10247793
    Abstract: A radio-frequency (RF) coil assembly (120, 660) for acquiring magnetic resonance (MR) signals. The RF coil assembly may include one or more of: at least one radio-frequency (RF) receive coil (246-x) for acquiring the MR signals; a detune circuit (248-x) including one or more circuit arms (A, B) serially coupled to the at least one RF receive coil, each of one or more circuit arms having at least two low-loss switches (350, 352, 450, 452, 462, 466) serially coupled to each other; a charge control circuit (372, 472) coupled to each of the one or more circuit arms at a location that is between the at least two serially-coupled low-loss switches of each of the one of more circuit arms and configured to draw power from the RF receive coil during a detune state; and an energy storage device (252, 370, 470) coupled to the charge control circuit and configured to store the drawn power.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: April 2, 2019
    Inventors: George Randall Duensing, Arne Reykowski
  • Patent number: 10215818
    Abstract: A magnetic resonance (MR) coil array (26, 28) connected by way of a single transmission line (46, 48) is provided. The MR coil array (26, 28) includes a coil element (34) and a corresponding coil element circuit (32). The coil element circuit (32) includes at least one active component (40) powered by a power signal carried on the coaxial transmission line (46, 48). The voltage of the power signal varies between first and second direct current (DC) voltages of the same polarity. The coil element circuit (32) further includes a tune/detune circuit (42) connected to the coaxial transmission line (46, 48). The tune/detune circuit (42) tunes or detunes the coil element (34) based on the first and second DC voltages. An MR system (10) using the MR coil array (26, 28) and a method (10) for tuning or detuning the MR coil (26, 28) are also provided.
    Type: Grant
    Filed: April 8, 2014
    Date of Patent: February 26, 2019
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Arne Reykowski, Rodney Housen, Henricus Gerardus Roeven, Lambertus deVries
  • Publication number: 20180376441
    Abstract: A magnetic resonance imaging (MRI) system (100, 400, 500) includes a wireless RF station (20, 320, 420, 520, 620) which is associated with one or more RF coils which sense the magnetic resonance (MR) signal emitted from a subject under MRI examination. The wireless RF station communicates digital data representing the sensed MR signal to an MRI controller (124) for further processing, which may include display. An internal clock (2202, 3202) in the wireless RF station is precisely synchronized with the MRI controller clock (108, 2101, 3101), with carrier phase synchronization and code phase tracking of a predefined code sequence such as a pseudo random number (PRN) sequence.
    Type: Application
    Filed: December 12, 2016
    Publication date: December 27, 2018
    Inventors: ARNE REYKOWSKI, PAUL REDDER, TIMOTHY ORTIZ, GEORGE RANDALL DUENSING
  • Publication number: 20180356478
    Abstract: A magnetic resonance (MR) system, including at least one wireless radio-frequency (RF) coil comprising antennas for receiving induced MR signals and an antenna array comprising transmission and reception antennas; a base transmitter system (BTS) having an antenna array comprising a plurality of transmission and reception antennas configured to communicate with the RF coil using a selected spatial diversity (SD) method; and at least one controller to control the BTS and the RF coil to determine a number of transmission and/or reception antennas available, couple the transmission and reception antennas to form corresponding antenna pairings, and determine signal characteristic information (SCI) of the antenna pairings,select an SD transmission method based upon the determined number of antennas and the determined SCI for communication between the BTS and the RF coil, and establish a communication channel between the BTS and the RF coil in accordance with the selected SD transmission method.
    Type: Application
    Filed: November 28, 2016
    Publication date: December 13, 2018
    Inventors: ARNE REYKOWSKI, PAUL REDDER, GEORGE RANDALL DUENSING, TIMOTHY ORTIZ
  • Publication number: 20180106875
    Abstract: A system for controlling a wireless-type radio frequency (RF) coil apparatus (102, 202, 302, 500) for a magnetic resonance (MR) system including a processor for acquiring emitted radio frequency (RF) signals from a plurality of coils of an RF transducer array including an indication of a local clock signal indicating a time of (RF) signal acquisition; acquiring magnetic field strength information from a plurality of field probes of a magnetic field probe array including an indication of the local clock signal indicating a time of magnetic field strength information acquisition, and forming k-space information based upon the acquired emitted RF signals from the plurality of coils of the RF transducer array and the acquired magnetic field strength information including the indications of the local clock signal.
    Type: Application
    Filed: March 24, 2016
    Publication date: April 19, 2018
    Inventors: GEORGE RANDALL DUENSING, ARNE REYKOWSKI, CHARLES SAYLOR
  • Publication number: 20180081009
    Abstract: A transmission apparatus for legacy magnetic resonance (MR) systems including one or more of a radio transmission portion having coupling to an analog RF cable port of the MR system including at least one first controller, an analog-to-digital converter (A/D), and a transmitter. The first controller controls the A/D to digitize analog magnetic resonance (MR) information received from the RF coil and controls the transmitter to transmit the digitized MR information. A radio reception portion including an analog output port and a coupler for coupling the output port to a legacy cable port input of the legacy system including at least one second controller, a receiver, and a digital-to-analog converter (D/A). The second controller controls the receiver to receive the transmitted digitized MR information, and controls the D/A to perform a digital-to-analog conversion to form a corresponding analog MR signal which is output at the output port.
    Type: Application
    Filed: March 14, 2016
    Publication date: March 22, 2018
    Applicant: KONINKLIJKE PHILIPS N.V.
    Inventors: GEORGE RANDALL DUENSING, ARNE REYKOWSKI, TIMOTHY ORTIZ
  • Patent number: 9872622
    Abstract: A magnetic resonance scanner (12) is configured for thermographic imaging. One or more processors (28) receive (56) thermal image data from the magnetic resonance scanner and reconstruct at least one thermal image in which each voxel includes a measure of temperature change. The one or more processors identify (58) thermally abnormal voxels. A display (44) displays at least one reconstructed image with the identified abnormal thermal locations.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: January 23, 2018
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Feng Huang, Arne Reykowski, George Randall Duensing
  • Patent number: 9869732
    Abstract: The invention discloses a decoupling circuit (32) disposed between adjacent RF receive coil elements to automatically decouple the adjacent MRI RF receive coil elements. In one embodiment, the invention involves to inject an RF signal into a first coil element, to measure the RF signal coupled from the first coil element into a second coil element and to adjust the capacitance of the decoupling circuit such as to minimize the coupling between the first and the second coil elements.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: January 16, 2018
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventor: Arne Reykowski
  • Publication number: 20170299672
    Abstract: A system and method synchronizes a digitizer clock of a Magnetic Resonance Imaging (MRI) device with a system clock of an imaging device. In a first method, an original reference signal is split into first and second reference signals in which the second reference signal is phase shifted to generate an orthogonal reference signal. A reliability of image data may be determined based upon a product between the first reference signal and the orthogonal reference signal. In a second method, a reference signal is transmitted from the imaging device to the MRI device and a return signal is received from the MRI device to the imaging device. A discrepancy between the digitizer clock and the system clock may be determined based upon the return signal which includes a variable time delay.
    Type: Application
    Filed: September 16, 2015
    Publication date: October 19, 2017
    Inventor: ARNE REYKOWSKI
  • Patent number: 9720060
    Abstract: A radio frequency (RF) coil assembly for use in magnetic resonance includes a radio frequency coil (42, 100) and an electronic switch (28) which switches between open and closed states to detune and tune the coil to a preselected resonance frequency. Each electronic switch includes at least one field effect transistor (FET) (70) and a bias network (72).
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: August 1, 2017
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Arne Reykowski, Rodney Housen
  • Patent number: 9710937
    Abstract: A medical imaging system (34) includes a memory (45) and one or more processors (60). The memory (45) stores magnetic resonance k-space data (4) and the magnetic resonance data includes non-rigid motion defects. The one or more processors (60) are configured to reconstruct (6) a first image (8) from the magnetic resonance data (4) which includes a high signal to noise ratio and motion artifacts. The one or more processors are further configured to detect and reject (10) portions of k-space (4) which include non-rigid motion defects, and reconstruct (4) a second image (16) from non-rejected portions of k-space (12) and the first image (8).
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: July 18, 2017
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Feng Haung, Arne Reykowski
  • Publication number: 20170176552
    Abstract: A synchronization system (100, 200, 400A, 400B, 600) for magnetic resonance (MR) systems.
    Type: Application
    Filed: March 18, 2015
    Publication date: June 22, 2017
    Applicant: Koninklijke Philips N.V.
    Inventor: ARNE REYKOWSKI
  • Publication number: 20170176551
    Abstract: A radio-frequency (RF) coil assembly (120, 660) for acquiring magnetic resonance (MR) signals. The RF coil assembly may include one or more of: at least one radio-frequency (RF) receive coil (246-x) for acquiring the MR signals; a detune circuit (248-x) including one or more circuit arms (A, B) serially coupled to the at least one RF receive coil, each of one or more circuit arms having at least two low-loss switches (350, 352, 450, 452, 462, 466) serially coupled to each other; a charge control circuit (372, 472) coupled to each of the one or more circuit arms at a location that is between the at least two serially-coupled low-loss switches of each of the one of more circuit arms and configured to draw power from the RF receive coil during a detune state; and an energy storage device (252, 370, 470) coupled to the charge control circuit and configured to store the drawn power.
    Type: Application
    Filed: March 18, 2015
    Publication date: June 22, 2017
    Inventors: GEORGE RANDALL DEUNSING, ARNE REYKOWSKI
  • Patent number: 9658305
    Abstract: A magnetic resonance system includes a magnetic resonance scanner (8) and a magnetic resonance scan controller (24). A plurality of markers (40, 140) are attached to the subject to monitor motion of a portion of a subject within an examination region. A motion control unit receives motion data from the markers indicative of the motion and controls the magnetic scan controller to adjust scan parameters to compensate for the motion. In one embodiment, the marker (40) includes a substance (44) which resonates at a characteristic frequency in response to radio excitations by the magnetic resonance scanner. A controller (52) switches an inductive circuit (48, 50) disposed adjacent the substance between a tuned state and a detuned state.
    Type: Grant
    Filed: May 16, 2012
    Date of Patent: May 23, 2017
    Assignee: KONINKLUJKE PHILIPS N.V.
    Inventors: Wei Lin, Charles Albert Saylor, Arne Reykowski
  • Patent number: 9488705
    Abstract: A local radio frequency (RF) transmitting coil (26) of a magnetic resonance imaging system (5) has a plurality of coil elements (100). Each coil element (100) has an adjustable load (62) which is adjusted by a control unit (60) to adjust a transmitted B1 field distribution. The load can be adjusted to shim for a uniform B1 field distribution. Non-uniform B1 field distributions can be selected to perform magnetic resonance sequences that use such B1 field distributions, such as parallel imaging. The B1 field distribution can be changed during the magnetic resonance sequence to track a moving region of interest, time division multiplex parallel imaging, and the like.
    Type: Grant
    Filed: July 5, 2012
    Date of Patent: November 8, 2016
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventor: Arne Reykowski
  • Patent number: 9417299
    Abstract: A radiofrequency (RF) coil assembly (18,18?) for use in a magnetic resonance system (10) includes a radiofrequency coil (42) and a plurality of memory resistive elements (46,56,62,72) which each retains a selected resistive state after a control signal is removed. A detune circuit (44), part of the radiofrequency coil assembly, includes a memory resistive element (46) which switches the radiofrequency coil between a tuned and detuned state. Connected between the radiofrequency coil and a pre-amplifier (52), a blanking circuit (54) includes a memory resistive element (56) to short circuit an input of the pre-amplifier. A multiplexing circuit (60) includes a plurality of memory resistive elements (62) to selectively couple the selected outputs of the radiofrequency coils to a receiver (26).
    Type: Grant
    Filed: May 17, 2010
    Date of Patent: August 16, 2016
    Assignee: Koninklijke Philips N.V.
    Inventor: Arne Reykowski