A regularized quantitative ultrasound method for simultaneous calculation of backscatter and attenuation coefficients

Stefano E. Romero; Andres Coila; Roberto J. Lavarello

doi:10.1117/12.2542460

3 January 2020 A regularized quantitative ultrasound method for simultaneous calculation of backscatter and attenuation coefficients

Stefano E. Romero, Andres Coila, Roberto J. Lavarello

Author Affiliations +

Proceedings Volume 11330, 15th International Symposium on Medical Information Processing and Analysis; 113300T (2020) https://doi.org/10.1117/12.2542460
Event: 15th International Symposium on Medical Information Processing and Analysis, 2019, Medelin, Colombia

Abstract

Quantitative ultrasound has shown potential of improving medical diagnosis. In this work, a regularized power law (RPL) for the joint estimation of backscatter coefficient (BSC) and attenuation coefficient (AC) parameters was derived and tested with simulated phantoms and in vivo. For the RPL method, a total variation regularization term regarding the BSC and AC parameters were used. The results were compared with ground truth simulated values. An improvement of precision can be appreciated without compromising the accuracy by factor of 80% and 54% according to bias and coefficient of variation, respectively. The in vivo experiments showed comparable results of the algorithm with the literature (i.e. fibroadenoma:1.90 ± 0.31dB.cm⁻¹ .MHz⁻¹ , normal tissue: 0.62 ± 0.20dB.cm⁻¹ .MHz⁻¹ ). The results suggest the RPL method has the potential to accurately and precisely estimating BSCs and ACs.

Citation Download Citation

Stefano E. Romero, Andres Coila, and Roberto J. Lavarello "A regularized quantitative ultrasound method for simultaneous calculation of backscatter and attenuation coefficients", Proc. SPIE 11330, 15th International Symposium on Medical Information Processing and Analysis, 113300T (3 January 2020); https://doi.org/10.1117/12.2542460

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