Shannon entropy: A specular echo-insensitive imaging metric showing myocardial anisotropy

Y. J. Cheng, J. N. Marsh, K. D. Wallace, L. Zhang, G. M. Lanza, S. A. Wickline, M. S. Hughes

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This work demonstrates the utility of Shannon entropy imaging of myocardial anisotropy in mice. Conventional acoustic microscopy measurements of excised short-axis myocardial slices may be used to delineate this anisotropy ex vivo. This approach often requires processing of specular echoes, which can cause artifacts in images that obscure detailed structures near interfacial boundaries. Two different ultrasonic signal receivers were evaluated using the same raw data as input: log energy(log[Ef ]) and Shannon entropy imaging( HS), entropic imaging is least influenced by specular echoes and is able to resolve anisotropy near interfacial boundaries.

Original languageEnglish
Title of host publication2009 IEEE International Ultrasonics Symposium and Short Courses, IUS 2009
DOIs
StatePublished - Dec 1 2009
Event2009 IEEE International Ultrasonics Symposium, IUS 2009 - Rome, Italy
Duration: Sep 20 2009Sep 23 2009

Publication series

NameProceedings - IEEE Ultrasonics Symposium
ISSN (Print)1051-0117

Conference

Conference2009 IEEE International Ultrasonics Symposium, IUS 2009
CountryItaly
CityRome
Period09/20/0909/23/09

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    Cheng, Y. J., Marsh, J. N., Wallace, K. D., Zhang, L., Lanza, G. M., Wickline, S. A., & Hughes, M. S. (2009). Shannon entropy: A specular echo-insensitive imaging metric showing myocardial anisotropy. In 2009 IEEE International Ultrasonics Symposium and Short Courses, IUS 2009 [5441837] (Proceedings - IEEE Ultrasonics Symposium). https://doi.org/10.1109/ULTSYM.2009.5441837