Quantitative ultrasound using fundamental and harmonic signals

摘要

Systems and methods include storing an echo signal power spectrum of a reference phantom for a fundamental frequency band and an echo signal power spectrum of a reference phantom for a harmonic frequency band, an echo signal power spectrum of a tissue region for a fundamental frequency band, and a harmonic frequency band Acquisition of an echo signal power spectrum of a tissue region, determination of a first backscattering coefficient based on an echo signal power spectrum of a tissue region for a fundamental frequency band and an echo signal power spectrum of a reference phantom for a fundamental frequency band, for harmonic frequency bands Determination of the second backscatter coefficient based on the echo signal power spectrum of the tissue region and the echo signal power spectrum of the reference phantom for the harmonic frequency band, and the determination of the nonlinearity of the tissue region based on the first backscatter coefficient and the second backscatter coefficient includes