“…In regard to the assessment of in vivo nerve movement with USI, this technique of speckle tracking via frame-by-frame cross-correlation analysis has become widely used. Several studies have used this technique and have shown it to be reliable for the assessment of the median (Coppieters et al 2009), sciatic (Coppieters et al 2015;Ellis et al , 2012Ridehalgh et al 2012), tibial (Boyd et al 2012;Boyd and Dilley 2014;Shum et al 2013), common peroneal (Boyd et al 2012) and posterior tibial (Carroll et al 2012) nerves. Furthermore, this technique has been validated against median nerve movement assessment, via indwelling nerve markers, from whole-body, embalmed cadavers (Meng et al 2015).…”