Three-dimensional multiphoton/optical coherence tomography for diagnostic applications in dermatology

Area of Science:

• Dermatology
• Biomedical Imaging
• Optical Physics

Background:

• In vivo skin imaging is crucial for diagnosing various dermatological conditions.
• Existing imaging techniques have limitations in resolution and depth for comprehensive skin assessment.

Purpose of the Study:

• To evaluate the clinical diagnostic potential of a multimodal imaging approach using multiphoton tomography (MPT) and optical coherence tomography (OCT).
• To assess the capability of MPT and OCT for three-dimensional (3D) in vivo imaging of normal and pathologic skin.

Main Methods:

• Conducted a preliminary clinical trial using state-of-the-art MPT and OCT for 3D in vivo skin imaging.
• MPT provided sub-cellular details (<2 μm axial, <0.5 μm transverse resolution).
• OCT acquired 3D images of skin architecture (~8 μm axial, ~20 μm transverse resolution).

Main Results:

• MPT achieved high-resolution visualization of sub-cellular structures.
• OCT provided 3D imaging of skin's layered architecture over larger volumes.
• The combined MPT/OCT approach demonstrated potential for pre-screening and detailed analysis of skin lesions.

Conclusions:

• Multimodal MPT/OCT imaging is a promising tool for in vivo skin diagnostics.
• 3D OCT can efficiently screen large skin areas, identifying regions of interest for high-resolution MPT analysis.
• This integrated approach enables detailed sub-cellular examination of suspicious skin regions.