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Depth-Dependent Color-Coded Optical Attenuation Coefficient Imaging: Assisted Examination Methods of Facial
Jian Liu1, Linghui Kong1, Binyin Zhang1
1School of Control Engineering, Northeastern University at Qinhuangdao, Qinhuangdao City, China.
None:
This study investigates the relationship between facial microcirculation and optical parameters using swept-source optical coherence tomography (SS-OCT). Facial microcirculation deterioration impacts skin health by causing blood stagnation and metabolic disorders, influencing optical properties like scattering and attenuation. High-resolution SS-OCT imaging revealed distinct correlations between blood flow and optical attenuation coefficient (OAC) across skin layers: epidermal OAC showed a negative correlation with blood flow (r = -0.29 ± 0.03), while dermal OAC demonstrated a positive correlation (r = -0.43 ± 0.06). Leveraging this finding, we developed a depth-encoded color OAC imaging mode that enhances facial microcirculation visualization without additional scanning. The work provides mechanistic insights into microcirculation-related skin deterioration and establishes a novel clinical tool for diagnosing and managing associated conditions.
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