Comparative investigation of elastic properties in a trabecula using micro-Brillouin scattering and scanning acoustic microscopy.

Kawabe M, Fukui K, Matsukawa M, Granke M, Saïed A, Grimal Q, Laugier P
J Acoust Soc Am. 2012 132 (1): EL54-60

PMID: 22779573 · DOI:10.1121/1.4730329

Micro-Brillouin scattering (μ-BR) and a 200 MHz scanning acoustic microscope (SAM) with similar spatial resolutions were applied to evaluate tissue elastic properties in two directions in a trabecula. Acoustic impedance measured by SAM was in the range of 5-9 Mrayl. Wave velocities determined by μ-BR were in the range of (4.75-5.11) × 10(3) m/s. Both exhibited a similar trend of variation across the trabecula and were significantly correlated (R(2) = 0.63-0.67, p < 0.01). μ-BR is useful for the evaluation of tissue stiffness within a trabecula. Combined with SAM or nanoindentation, it can provide additional information to assess elastic anisotropy at the micro-scale.

MeSH Terms (7)

Animals Cattle Elasticity Femur Microscopy, Acoustic Scattering, Radiation Sound Spectrography

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