Optical Coherence Tomography (OCT)
For Imaging Vulnerable Plaques
OCT axial resolution keeps increasing (< 1 micrometer) with ever broader source while lateral resolution lags
behind (15 micrometer ). OCT at cellular level need improvement of lateral resolution.
Focus Tracking (match focal depth with coherence depth) is one of the solutions. Liquid filled polymer lens are
MEMS rotating mirror are both possible solutions under research. Liquid filled polymer lens, which can adjust
lens shape through modifying liquid pressure, has been developed. There is also MEMS membrane rotating
mirror, that can measure velocity much more accurate.
Liquid filled polymer lens
Designed by Jingjing Jiang