Patents Examined by Taylor Deutsch
  • Methods and systems for shear wave elastography
    Patent number: 11357478
    Abstract: A mechanical vibration source for a shear wave elastography system has a contact surface shaped to provide a point source of mechanical energy when striking a target surface of a medium. This point source usefully mitigates high frequency components and other artifacts in an induced shear wave. Other techniques may be used in combination with this mechanical energy source to improve shear wave elastography and facilitate miniaturization for deployment, e.g., within a handheld imaging device.
    Type: Grant
    Filed: April 11, 2018
    Date of Patent: June 14, 2022
    Assignee: Massachusetts Institute of Technology
    Inventors: Heng Yang, Brian W. Anthony, Felix Jan van de Donk
  • Asymmetry for acoustic radiation force impulse
    Patent number: 11311275
    Abstract: Asymmetry is provided for the pushing pulse in acoustic radiation force impulse (ARFI) imaging. MI is based on the negative pressure. By increasing the positive pressure more than the negative pressure, the magnitude of displacement may be increased without exceeding the MI limit. Similarly, negative voltages depole while positive do not, so using an ARFI or pushing pulse with asymmetric positive-to-negative peak pressures or voltages allows for generation of greater magnitude of displacement without harm to the transducer.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: April 26, 2022
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Stephen J. Rosenzweig, Paul Reynolds
  • Ultrasonic diagnostic device and ultrasonic probe
    Patent number: 11298107
    Abstract: A plurality of transmission and reception circuits are connected to a plurality of vibration elements. The transmission and reception circuit includes a basic delay circuit and a fine delay circuit. The basic delay circuit delays a transmission signal and a reception signal for sub beamforming. The fine delay circuit is configured to be capable of performing delay finer than that of the basic delay circuit. A quantized delay error is compensated for by the fine delay circuit at the time of transmission.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: April 12, 2022
    Assignee: FUJIFILM Healthcare Corporation
    Inventors: Shinta Takano, Kazuhiro Amino, Hiroshi Kakita