Shear Wave Detection in Medical Ultrasound Imaging

摘要

Shear waves are detected with ultrasound. The detection of the shear wave is constrained using prior measurements in a more controlled environment (e.g., less noise). For example, shear waves measured in a phantom are used to constrain the detection of shear waves in a patient to avoid false positive detections.

主权项

1. A method for shear wave detection with ultrasound, the method comprising:
transmitting, from a transducer, an acoustic radiation force excitation into a patient; measuring, with ultrasound, displacements at a location of tissue within a patient in response to a shear wave resulting from the acoustic radiation force excitation; determining, by a processor, a maximum displacement of the displacements for the location; identifying a time range as a predetermined constraint, from a memory, based on the maximum displacement; locating, by the processor, a time from the displacements within the time range; calculating, by the processor, a shear wave velocity as a function of the time; and displaying an indication of the shear wave velocity.