Patent ID: 11963824
Assignee: SIEMENS MEDICAL SOLUTIONS USA, INC.
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A

Claim 0:
1. A system for shear wave imaging with ultrasound, the system comprising:
an ultrasound scanner configured to transmit, from a transducer with an array of elements, a pushing pulse, the pushing pulse operable to generate a shear wave in tissue of a patient, the ultrasound scanner configured to track tissue displacements over time at a plurality of locations in a region of interest, the tissue displacements being in response to the shear wave, the tissue displacements over time being at a first sampling rate provided for each of the locations;
an image processor configured to determine an initial shear wave velocity from a type of tissue and other possible shear wave velocities as offsets from the initial shear wave velocity, configured to iteratively test different temporal displacement profiles formed as different combinations of the tissue displacements over time from the locations, wherein the different combinations are formed from applying different time shifts to the tissue displacements over time for the locations based on the initial and the possible shear wave velocities, each of the different combinations formed from the tissue displacements of multiple locations of the plurality of the locations and a different one of the initial and possible shear wave velocities than others of the different combinations where the different ones of the initial and possible shear wave velocities for the different combinations relates to the different time shifts based on distance, configured to select a first temporal displacement profile of the different temporal displacement profiles, the first temporal displacement profile having a second sampling rate greater than the first sampling rate, and configured to estimate a tissue shear wave velocity from the time shift for the selected first temporal displacement profile as the initial or possible shear wave velocity used to form the selected first temporal displacement profile;
a display configured to display an image showing of the estimate of the tissue shear wave velocity.