The nonlinearity B/A parameter is an important parameter influencing the distortion of ultrasound waves in tissue. B/A has different values for normal and pathological media and can be used for tissue characterization. The extended comparative method (ECM) allows estimating the B/A parameter in echo mode configuration but presents some limitations. The limitations are the concentration of energy due to transmission focusing and the poor resolution in distinguishing areas with different B/A. This paper proposes to improve the estimation of B/A with the ECM approach using a high frame rate imaging approach based on plane wave transmission. The simulation results show that good performance in B/A estimation can be obtained through the analysis of the corresponding pressure field. Promising results are also achieved through the direct estimation of B/A from the B-Mode echo-mode images.
High frame rate compounding for nonlinear B/A parameter ultrasound imaging in echo mode - simulation results / Matthieu Toulemonde; Francois Varray; Olivier Basset; Piero Tortoli; Christian Cachard. - ELETTRONICO. - (2014), pp. 5153-5157. (Intervento presentato al convegno 2014 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) tenutosi a Firenze nel April 2014) [10.1109/ICASSP.2014.6854585].
High frame rate compounding for nonlinear B/A parameter ultrasound imaging in echo mode - simulation results
TOULEMONDE, MATTHIEU EDOUARD GEORGES;VARRAY, FRANCOIS;TORTOLI, PIERO;
2014
Abstract
The nonlinearity B/A parameter is an important parameter influencing the distortion of ultrasound waves in tissue. B/A has different values for normal and pathological media and can be used for tissue characterization. The extended comparative method (ECM) allows estimating the B/A parameter in echo mode configuration but presents some limitations. The limitations are the concentration of energy due to transmission focusing and the poor resolution in distinguishing areas with different B/A. This paper proposes to improve the estimation of B/A with the ECM approach using a high frame rate imaging approach based on plane wave transmission. The simulation results show that good performance in B/A estimation can be obtained through the analysis of the corresponding pressure field. Promising results are also achieved through the direct estimation of B/A from the B-Mode echo-mode images.
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