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Methods for dynamic range expansion and enhancement of the signal-to-noise ratio in elastography

E.E. Konofagou, S.K. Alam, J. Ophir, T. Krouskop
1997 IEEE Ultrasonics Symposium Proceedings. An International Symposium (Cat. No.97CH36118)  

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Two methods are discussed to increase the dynamic range and enhance the signal-to-noise ratio in elastography (SNR,). One method uses variable applied strains to expand the elastographic dynamic range by selecting the strain estimates with the highest SNR, out of a multitude of strain estimates. The second one is a completely new estimator that estimates the strain by an iterative temporal stretching algorithm of the windowed postcompression RF echo signal. We examine these methods using 2D
more » ... te element simulations and resulting experimental strain filters. Finally, the combination of these two methods is shown to produce an elastogram with higher dynamic range as well as S N k .
doi:10.1109/ultsym.1997.661783 fatcat:zsffxwpyqzaq7lmplltqjzgabe
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E.E. Konofagou, S.K. Alam, J. Ophir, T. Krouskop. "Methods for dynamic range expansion and enhancement of the signal-to-noise ratio in elastography." 1997 IEEE Ultrasonics Symposium Proceedings. An International Symposium (Cat. No.97CH36118)