A model-free approach to probe motion artifacts suppression for in vivo imaging with probe oscillation shear wave elastography (PROSE)

摘要

Probe oscillation shear wave elastography (PROSE) can achieve high frame-rate two-dimensional (2D) shear wave elastography by utilizing a continuously vibrating ultrasound probe to simultaneously generate and detect shear waves (Mellema, IEEE TMI 0278-0062). Strategically detecting when the probe returns to the same physical location allowed the shear waves to be decoupled from probe motion artifacts; however, complicated wave patterns observed when imaging in vivo liver prevented full suppression of these artifacts. This work proposes Empirical Mode Decomposition (EMD) as a model-free approach to decouple probe motion artifacts from the shear wave signal.