Počet záznamů: 1
Localization and classification of scattered nonlinear ultrasonic signatures in bio-mechanical media using time reversal approach
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SYSNO ASEP 0576078 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Localization and classification of scattered nonlinear ultrasonic signatures in bio-mechanical media using time reversal approach Tvůrce(i) Dvořáková, Zuzana (UT-L) ORCID, RID
Dos Santos, S. (FR)
Kůs, V. (CZ)
Převorovský, Zdeněk (UT-L) RID, ORCIDCelkový počet autorů 4 Zdroj.dok. Journal of the Acoustical Society of America. - : Acoustical Society of America - ISSN 0001-4966
Roč. 154, č. 3 (2023), s. 1684-1695Poč.str. 12 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova time reversal approach ; nonlinearity ; signal classification ; Φ-divergence Vědní obor RIV BI - Akustika a kmity Obor OECD Materials engineering Způsob publikování Omezený přístup Institucionální podpora UT-L - RVO:61388998 UT WOS 001079145600005 EID SCOPUS 85171119752 DOI https://doi.org/10.1121/10.0020658 Anotace This paper deals with the time reversal approach along with signal classification using ϕ-divergences in biomedical applications for localization and statistical classification of ultrasonic nonlinearities. The time reversal (TR) approach in combination with nonlinear elastic wave spectroscopy (NEWS) is used to obtain the nonlinear signature of air bubbles with different sizes and ultrasound contrast agents in a liquid. An optimized chirp-coded signal in the range of 0.6–3 MHz is used as a compression coding. The signal classification is performed using the fuzzy classification method and the divergence decision tree algorithm using specific ϕ-divergence spectral measures extracted from the received ultrasonic response containing acoustic nonlinearities. The classification results prove that different types of nonlinearities extracted with classical “pulse inversion” based coding methods can be identified. Simultaneously, the different positions of scattered sources are distinguished by ϕ-divergence methods. The potential of time reversal nonlinear elastic wave spectroscopy methods for understanding of ultrasonic wave propagation in complex media is clearly exhibited. Pracoviště Ústav termomechaniky Kontakt Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Rok sběru 2024 Elektronická adresa https://pubs.aip.org/asa/jasa/article-abstract/154/3/1684/2911418/Localization-and-classification-of-scattered?redirectedFrom=fulltext
Počet záznamů: 1