2021/09/09 by Juvenal Ormachea, Ormachea, Juvenal, Kevin J. Parker +1
Medicine · #Biological Physics (physics.bio-ph) #Cardiovascular Disease and Adiposity #FOS: Physical sciences #Hepatocellular Carcinoma Treatment and Prognosis #Liver Disease Diagnosis and Treatment #Medical Physics (physics.med-ph)
paper · pdf · doi:10.48550/arxiv.2109.04419
openalex publication_date 2021/09/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The quantification of liver fat as a diagnostic assessment of steatosis remains an important priority for noninvasive imaging systems. We derive a framework in which the unknown fat volume percentage can be estimated from a pair of ultrasound measurements. The precise estimation of ultrasound speed of sound and attenuation within the liver are shown to be sufficient for estimating fat volume assuming a classical model of the properties of a composite elastic material. In this model, steatosis is represented as a random dispersion of spherical fat vacuoles with acoustic properties similar to those of edible oils. Using values of speed of sound and attenuation from the literature where normal and steatotic livers were studied near 3.5 MHz, we demonstrate agreement of the new estimation method with independent measures of fat. This framework holds the potential for translation to clinical scanners where the two ultrasound measurements can be made and utilized for improved quantitative assessment of steatosis.