Attenuation and backscatter coefficient measurements from 2 to 60 MHz using backscattered RF signals from a tissue-mimicking phantom

Abstract

A technique for measuring the amnuation and the absolute magnitude of backscatter in a singletransducer backscatter configuration is tested in a tissuemimicking gelatin phantom containing two random distributions of spherical glass scatterers (82 pm and 4 pm mean diameter). Three transducers with different center frequencies and focusing characteristics were used in order to verify that system-dependent effects were removed by the technique and to investigate the change in the measured parameters across a broad range of frequencies (2 to 60 MHz). Comparison of both the experimental results with the calculated backscatter magnitude and the dependence on frequency of the coefficient [l] showed good agreement. Thus, the test demonstrates that the backscatter method employed for coefficient is accurate over a broad range of frequencies the determination of the attenuation and backscatter of interest in medical ultrasound and backscatter acoustic microscopy.

The Speed of Sound and Attenuation of an IEC Agar-Based Tissue-Mimicking Material for High Frequency Ultrasound Applications

“…2011 ). One gelatine-based tissue mimicking material with spherical glass scatterers has been characterized from 2 to 60 MHz ( Bridal et al. 1996 ), the attenuation of which depended nonlinearly with the frequency.…”