1. Noninvasive characterization of fractional photothermolysis induced by ablative and non-ablativelasers with optical coherence tomography

    Noninvasive characterization of fractional photothermolysis induced by ablative and non-ablativelasers with optical coherence tomography

    In this study, an optical coherence tomography (OCT) system is implemented for the noninvasive characterization of photothermolysis in human skin induced by ablative fractional lasers (AFLs) and non-ablative fractional lasers (NAFLs). With OCT imaging, microthermal zones (MTZs) induced by fractional lasers can be noninvasively visualized, and the size of induced MTZs can be quantitatively evaluated. According to the OCT results, the center region of the induced MTZ corresponds to weaker backscattered intensity after the AFL exposure as a result of tissue volatilization by photon energy. In contrast, after the NAFL exposure, the skin tissue is damaged and coagulated but not ...

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