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Design and implementation of an integrated scanning protocol for multimodal functional OCT.

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A new scanning protocol integrates optical coherence tomography (OCT) structural imaging, optical coherence elastography (OCE), and OCT-based angiography (OCTA) for comprehensive skin assessment. This non-invasive technique aids in differentiating benign from malignant skin lesions.

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Area of Science:

  • Biomedical Optics
  • Dermatology
  • Medical Imaging

Background:

  • Early diagnosis of skin lesions is critical for effective treatment.
  • Non-invasive techniques like optical coherence tomography (OCT) are valuable for skin assessment.
  • Integrating OCT structural imaging, optical coherence elastography (OCE), and OCT-based angiography (OCTA) presents challenges due to image registration difficulties.

Purpose of the Study:

  • To develop and validate a novel scanning protocol for simultaneous OCT, OCE, and OCTA acquisition.
  • To enable comprehensive, non-invasive characterization of skin tissue properties and vascular networks.
  • To facilitate more accurate differentiation between benign and malignant skin lesions.

Main Methods:

  • Utilized a swept-source OCT (SS-OCT) system to integrate structural imaging, OCE, and OCTA in a single scanning session.
  • Recruited eleven healthy participants, acquiring data from palm, forearm, and facial skin.
  • Calculated biomechanical parameters (Young's modulus) from OCE and vascular network metrics (VAD, VSD, VDI, WTI) from OCTA.

Main Results:

  • Successfully acquired integrated OCT, OCE, and OCTA data from healthy human skin.
  • Demonstrated distinct biomechanical and vascular parameters between healthy facial skin and one collected facial lesion dataset.
  • The new protocol allows for calculation of key skin parameters from a single scan acquisition.

Conclusions:

  • The integrated scanning protocol offers a comprehensive, non-invasive approach to skin assessment.
  • This method provides valuable data for dermatologists, aiding in skin disease research and diagnosis.
  • Potential benefits include improved differentiation of skin lesions and enhanced understanding of skin pathophysiology.