Time-of-flight and noise-correlation-inspired algorithms for full-field shear-wave elastography using digital holography.

ABSTRACT: Quantitative stiffness information can be a powerful aid for tumor or fibrosis diagnosis. Currently, very promising elastography approaches developed for non-contact biomedical imaging are based on transient shear-waves imaging. Transient elastography offers quantitative stiffness information by tracking the propagation of a wave front. The most common method used to compute stiffness from the acquired propagation movie is based on shear-wave time-of-flight calculations. We introduce an approach to transient shear-wave elastography with spatially coherent sources, able to yield full-field quantitative stiffness maps with reduced artifacts compared to typical artifacts observed in time-of-flight. A noise-correlation algorithm developed for passive elastography is adapted to spatially cohere

SUBMITTER: Marmin A 

PROVIDER: S-EPMC8374320 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature