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(PDF) Audio frequency in vivo optical coherence …

    https://www.researchgate.net/publication/24406466_Audio_frequency_in_vivo_optical_coherence_elastography
    Audio frequency in vivo optical coherence elastography. June 2009; ... [31], or signal orientations to explore various biological sample properties. Optical coherence elastography measures ...

Audio frequency in vivo optical coherence elastography ...

    https://surrey.eprints-hosting.org/846880/
    Adie, S.G., Kennedy, B.F., Armstrong, J.J., Alexandrov, S.A. and Sampson, D.D. (2009) Audio frequency in vivo optical coherence elastography Physics in Medicine and Biology, 54 (10). pp. 3129-3139. Full text not available from this repository. Abstract. We present a new approach to optical coherence elastography (OCE), which probes the local elastic properties of tissue by …

Audio frequency in vivo optical coherence elastography ...

    https://ui.adsabs.harvard.edu/abs/2009PMB....54.3129A/abstract
    We present quantitative results of sub-micron excitation at 820 Hz in a layered phantom and the first such measurements in human skin in vivo. We present a new approach to optical coherence elastography (OCE), which probes the local elastic properties of tissue by using optical coherence tomography to measure the effect of an applied stimulus in the audio …

In vivo dynamic optical coherence elastography using a ...

    https://pubmed.ncbi.nlm.nih.gov/19997419/
    We present a novel sample arm arrangement for dynamic optical coherence elastography based on excitation by a ring actuator. The actuator enables coincident excitation and imaging to be performed on a sample, facilitating in vivo operation. Sub-micrometer vibrations in the audio frequency range were …

Dynamic spectral-domain optical coherence elastography for ...

    https://pubmed.ncbi.nlm.nih.gov/20588552/
    In this technique, audio-frequency compressive vibrations are generated by a piezoelectric stack as external excitation, and strain rates in the sample are calculated and mapped quantitatively using phase-sensitive spectral-domain optical coherence tomography. At different driving frequencies, this technique provides contrast between sample regions with different …

In vivo dynamic optical coherence elastography using a ...

    https://www.osapublishing.org/oe/abstract.cfm?uri=oe-17-24-21762
    We present a novel sample arm arrangement for dynamic optical coherence elastography based on excitation by a ring actuator. The actuator enables coincident excitation and imaging to be performed on a sample, facilitating in vivo operation. Sub-micrometer vibrations in the audio frequency range were coupled to samples that were imaged using optical coherence …

In vivo three-dimensional optical coherence …

    https://www.biophotonics.illinois.edu/sites/default/files/OE-3D_OCE_0.pdf
    The ring actuator had an aperture of 9 mm, maximum stroke of 12 μm, stiffness of 250 N/μm and resonance frequency of 45 kHz. A sinusoidal excitation signal was introduced to skin with unloaded amplitude in the range 1-6 μm and frequency in the range 50-250 Hz.

(PDF) In vivo dynamic optical coherence elastography …

    https://www.researchgate.net/publication/40484234_In_vivo_dynamic_optical_coherence_elastography_using_a_ring_actuator
    The results constitute the first demonstration of a practical means of performing in vivo dynamic optical coherence elastography on a human subject. ... OCT visualization of audio-frequency ...

Dynamic spectral-domain optical coherence elastography for ...

    https://ws.engr.illinois.edu/sitemanager/getfile.asp?id=1065
    Abstract: A dynamic spectral-domain optical coherence elastography (OCE) imaging technique is reported. In this technique, audio-frequency compressive vibrations are generated by a piezoelectric stack as external excitation, and strain rates in …

In vivo three-dimensional optical coherence elastography

    https://www.osapublishing.org/oe/abstract.cfm?URI=oe-19-7-6623
    Abstract: We present the first three-dimensional (3D) data sets recorded using optical coherence elastography (OCE). Uni-axial strain rate was measured on human skin in vivo using a spectral-domain optical coherence tomography (OCT) system providing >450 times higher line rate than previously reported for in vivo OCE imaging. Mechanical excitation was applied at a frequency …

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