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Phase-sensitive optical coherence elastography for mapping tissue microstrains in real time
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View: Figures


Image of FIG. 1.
FIG. 1.

(Color online) Schematic of the PSOCE system used in this study, where PC represents the polarization controller, the collimator, ND the neutral density filter, DM the double pass mirror, the lens, the mirror, and the grating.

Image of FIG. 2.
FIG. 2.

(Color online) Characterization of the tissue mechanical properties of a bilayer phantom at the time instant of when it was subjected to a slow dynamic compression. (a) OCT structural image (dB), (b) wrapped phase map determined by the PSOCE system (radians), (c) instant tissue deformation map calculated from (a) after the application of unwrapping algorithm , (d) localized velocity map , (e) instant strain rate map (%/s), and (f) instant strain map (%). Note that the units for color bars in the individual figures are indicated in the brackets above.

Image of FIG. 3.
FIG. 3.

(Color online) (a) Dynamic tissue deformation curves and (b) strain profiles plotted against the time measured for the locations marked in Fig. 2(a), compared with the synchronized separate measurement of actual displacement [top curve in (a)] applied to the phantom by the precision translation stage.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Phase-sensitive optical coherence elastography for mapping tissue microstrains in real time