Fig. 1: 3D multiparametric hepatic USI: ultrafast Doppler (UFD), attenuation imaging (ATI), and acoustic structure quantification (ASQ).
From: 3D multiparametric ultrasound imaging of steatotic liver disease in a study with male rats
a Experimental schematic of 3D USI. b US data acquisition procedure with automated respiratory triggering, ultrafast ultrasound transmission/reception, and planewave acquisition. c 3D UFD processing and quantitative UFD indices: vessel volume (VVO), fractional moving blood volume (FMBV), vessel bifurcation density (VBD), and sum of angles metric (SOAM). d ATI processing and estimated attenuation coefficient (EAC) calculation. e ASQ processing and focal disturbance ratio (FDR) calculation. DAQ data acquisition, PD power Doppler, ROI region of interest, RS ratio of power spectrum values, RSnor normalized RS, Δf frequency step, Δz depth gap, and \({C}_{m}^{2}\) key distribution parameter. Rat schematic in (a) was created in BioRender. Ahn, M. (2025) https://BioRender.com/yz7h2m4.
