High frequency ultrasound characterization of the coagulation process of whole blood

Abstract : This study was designed to characterize the blood clotting process in vitro by following changes in its acoustic properties. High frequency (from 20 to 45 MHz) ultrasound parameters were measured both in double transmission (sound velocity) and backscattering (backscatter coefficient, integrated backscatter coefficient and effective scatterer size) mode. Whole blood samples were collected from healthy volunteers. The protocol to initiate the coagulation process is describe. During the blood clotting process (two hours' observation), acoustic parameters were measured with 15 seconds time resolution for the transmission parameters and 1 minute for the backscattering parameters. The results clearly showed that changes in several acoustic parameters are able to identify several stages in the in vitro blood clotting process, in particular, red blood cell aggregation and blood solidification.
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Communication dans un congrès
Ultrasonics Symposium, 2004 IEEE, Aug 2004, Canada. pp.846-849, 2004, 〈10.1109/ULTSYM.2004.1417869〉
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https://hal.archives-ouvertes.fr/hal-00645436
Contributeur : Pierrick Coupé <>
Soumis le : lundi 28 novembre 2011 - 10:03:35
Dernière modification le : mercredi 21 mars 2018 - 10:54:02

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Frédéric Ossant, R. Libgot, Pierrick Coupé, P. Lermusiaux, Frédéric Patat. High frequency ultrasound characterization of the coagulation process of whole blood. Ultrasonics Symposium, 2004 IEEE, Aug 2004, Canada. pp.846-849, 2004, 〈10.1109/ULTSYM.2004.1417869〉. 〈hal-00645436〉

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