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Ultrasound characterization of aggregated red blood cells: towards in vivo application

  • E. FranceschiniEmail author
  • F. T. H. Yu
  • G. Cloutier
Part of the Springer Proceedings in Physics book series (SPPHY, volume 128)

Abstract

Ultrasonic backscattered signals from blood contain frequency-dependent information that can be used to obtain quantitative parameters reflecting the aggregation state of red blood cells (RBCs). The difficulty to use this frequencydependent information in vivo is due to the attenuation caused by intervening tissue layers that distorts the spectral content of backscattering properties from blood microstructures. We propose an optimizationmethod to simultaneously estimate tissue attenuation and blood structure factor. In an in vitro experiment, we obtained satisfactory estimates with relative errors below 25% for attenuations between 0.115 and 0.412 dB/cm/MHz and D < 10 (D the aggregate diameter expressed in number of RBCs).

Keywords

Shear Rate Packing Factor Total Attenuation Aggregate Diameter Scatterer Size 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  1. 1.Laboratory of Biorheology and Medical UltrasonicsUniversity of Montreal Hospital Research Center, Pavillon J.A. de Sève (Room Y-1619)Montréal, QuébecCanada

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