Fig. 9.

3D LC-OCT image (orthogonal views) of a biopsy of a fulguration-induced tattoo, with associated Raman spectra obtained from CRM for four POIs identified in the 3D LC-OCT image and materialized by red ellipsoids. The dotted line on the horizontal image shows the position of the vertical image above regarding the horizontal plane of the 3D image, and vice-versa. The depth Z of the horizontal image is indicated with respect to the skin surface. Dark blue arrows on Raman spectra depict Raman bands corresponding to dermis, light blue arrows correspond to main bands of hypothetical silver-derived materials and green arrows depict the two Raman peaks assigned to TiO₂. Surface images provided by the LC-OCT and CRM devices are also shown.