Visible and near infrared LCTF-based hyperspectral dermoscope targeting early detection of skin cancer

Maria Castro-Fernandez; Guillermo V. Socorro-Marrero; Carlos Vega; Nerea Márquez-Suárez; Cristina Marcello-Melián; Raquel Leon; Himar Fabelo; Gustavo M. Callico

doi:10.1117/12.3016821

18 June 2024 Visible and near infrared LCTF-based hyperspectral dermoscope targeting early detection of skin cancer

Maria Castro-Fernandez, Guillermo V. Socorro-Marrero, Carlos Vega, Nerea Márquez-Suárez, Cristina Marcello-Melián, Raquel Leon, Himar Fabelo, Gustavo M. Callico

Author Affiliations +

Proceedings Volume 12998, Optics, Photonics, and Digital Technologies for Imaging Applications VIII; 1299804 (2024) https://doi.org/10.1117/12.3016821
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

The incidence of skin cancer has increased in the last decades, being one of the most common cancers, but can have a five-year survival rate of over 99% if treated early. This work describes a novel hyperspectral dermoscope for early skin cancer detection, able to capture spatial and spectral information in the Visible (VIS) and Near Infrared (NIR) ranges by using Liquid Crystal Tunable Filters (LCTFs). KURIOS-VB1 and KURIOS-XE2 filters were used for VIS and NIR ranges, respectively, providing 136 wavelengths with 5 nm of spectral resolution. A dichroic mirror combines output light paths, illuminating the skin's surface via a fiber optic ring light. Reflected light is captured by a 1.3-megapixel monochrome camera. Additionally, a custom hand-held 3D printed part integrates optics and control circuitry. The proposed characterization method used to optimize the camera exposure time for each wavelength has proven effective in obtaining a flat white reference and gathering information in the range of 450 to 1050 nm and, especially, at critical wavelengths such as the test wavelengths evaluated closer to the limit bands of the LCFTs (450 and 600 nm for VIS, and 750 and 900 nm for NIR).

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Maria Castro-Fernandez, Guillermo V. Socorro-Marrero, Carlos Vega, Nerea Márquez-Suárez, Cristina Marcello-Melián, Raquel Leon, Himar Fabelo, and Gustavo M. Callico "Visible and near infrared LCTF-based hyperspectral dermoscope targeting early detection of skin cancer", Proc. SPIE 12998, Optics, Photonics, and Digital Technologies for Imaging Applications VIII, 1299804 (18 June 2024); https://doi.org/10.1117/12.3016821

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