Comparing reduced scattering variation by skin type and tissue location using spatial frequency domain imaging for clinical burn wound imaging

Rebecca Rowland; Adrien Ponticorvo; Binh Cong Le; Thinh Phan; Nicole Bernal; Anthony J. Durkin

doi:10.1117/12.2546391

6 March 2020 Comparing reduced scattering variation by skin type and tissue location using spatial frequency domain imaging for clinical burn wound imaging

Rebecca Rowland, Adrien Ponticorvo, Binh Cong Le, Thinh Phan, Nicole Bernal, Anthony J. Durkin

Author Affiliations +

Proceedings Volume 11211, Photonics in Dermatology and Plastic Surgery 2020; 1121102 (2020) https://doi.org/10.1117/12.2546391
Event: SPIE BiOS, 2020, San Francisco, California, United States

Abstract

Spatial frequency domain imaging (SFDI), a noncontact imaging technique using structured illumination with multiple wavelengths, has proved feasible for characterizing burns of different severities induced in porcine dorsum. However, translation to human clinical subjects may be subject to variation in tissue optical properties due to different skin types or body parts. To interrogate this potential difference in optical properties, SFDI was used to measure the reduced scattering coefficient (μ_s’ ) in patients of varying Fitzpatrick skin type groups at 10 anatomical locations on the body. These scattering values were compared against previously measured average μ_s’ values for burns in a porcine model. At 851nm, superficial partialthickness burns had a 12.6% higher μ_s’ than unburned porcine dorsum. Deep partial-thickness and had 12.9% higher average μ_s’ than unburned porcine dorsum, while full-thickness burns had 2.5% higher average μ_s’ than unburned porcine dorsum. The variation seen in scattering values at 851nm at one anatomical location (dorsal forearm) for the different skin type groups showed a 6.3% lower average μ_s’ in group 3 (skin types VVI) compared to group 2 (skin types III-IV). Average scattering values were 3.8% lower in group 1 (skin types I-II) compared to group 2 (skin types III-IV). The variation of μ_s’ at 851nm across multiple anatomical locations for the same skin type group (Group 1) was a 23% difference from the anatomical location with the highest average μ_s’ at 851nm (forehead) to the lowest (shin). These findings indicate that further consideration of skin type and location will be integral to the translation of classification techniques based μ_s’ measurements of porcine dorsum to human patients.

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Rebecca Rowland, Adrien Ponticorvo, Binh Cong Le, Thinh Phan, Nicole Bernal, and Anthony J. Durkin "Comparing reduced scattering variation by skin type and tissue location using spatial frequency domain imaging for clinical burn wound imaging", Proc. SPIE 11211, Photonics in Dermatology and Plastic Surgery 2020, 1121102 (6 March 2020); https://doi.org/10.1117/12.2546391

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KEYWORDS

Skin

Scattering

Optical properties

Tissues

Absorption

Animal model studies

Laser scattering

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