Abstract

Acoustomotive optical coherence elastography (AM-OCE), a dynamic and internal excitation optical coherence elastography technique, is reported. Acoustic radiation force was used for internal mechanical excitation, and spectral-domain optical coherence tomography was used for detection. Mechanical properties of gelatin tissue phantoms were measured by AM-OCE and verified using rheometry results. Measured mechanical properties including shear moduli and shear damping parameters of the gelatin samples double when their polymer concentration increases from 3% to 4%. Spectral analysis was also performed on the acquired data, which improved the processing speed by a factor of 5 compared with a least-square fitting approach. Quantitative measurement, microscale resolution, and remote excitation are the main features of AM-OCE, which make the technique promising for measuring biomechanical properties.

Original languageEnglish (US)
Pages (from-to)2894-2896
Number of pages3
JournalOptics Letters
Volume34
Issue number19
DOIs
StatePublished - Oct 1 2009

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mechanical properties
gelatins
shear
excitation
sound waves
microbalances
spectrum analysis
tomography
damping
polymers

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Acoustomotive optical coherence elastography for measuring material mechanical properties. / Liang, Xing; Orescanin, Marko; Toohey, Kathleen S.; Insana, Michael F.; Boppart, Stephen A.

In: Optics Letters, Vol. 34, No. 19, 01.10.2009, p. 2894-2896.

Research output: Contribution to journalArticle

Liang, Xing ; Orescanin, Marko ; Toohey, Kathleen S. ; Insana, Michael F. ; Boppart, Stephen A. / Acoustomotive optical coherence elastography for measuring material mechanical properties. In: Optics Letters. 2009 ; Vol. 34, No. 19. pp. 2894-2896.
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