Extraction of absorption coefficients from two-layer phantoms based on crossover point in diffuse reflectance

Pavitra S. Rudraiah; Hamootal Duadi; Dror Fixler

doi:10.1117/12.2608530

Extraction of absorption coefficients from two-layer phantoms based on crossover point in diffuse reflectance

Pavitra S. Rudraiah, Hamootal Duadi, Dror Fixler

Bar-Ilan University - The Alexander Kofkin Faculty of Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Scopus citations

Abstract

We performed a Monte Carlo simulation to detect the tattoo ink location in the dermis layer of the human skin. Tattoo ink (thickness of 0.2mm) was located between the upper dermis layer (thickness of 2mm) and the lower dermis layer (thickness of 8mm). An appreciable difference in the spatially resolved diffuse reflectance (DR) intensity was found between the skin without tattoo and the tattooed skin. The point at which the skin without tattoo and the tattooed skin DR intensity profile intersect is called the crossover point (Cp). The slopes were extracted from the DR intensity profile before and after the Cp for a wavelength range from 400-1,000nm. The slopes are extracted from each wavelength, and we plotted the calculated square slopes versus wavelength. In the shorter wavelengths region (400-500nm), two-layer (2L) behavior was observed, and in the longer wavelengths region (600-1,000nm), a single layer behavior was observed. This confirms the tattoo ink was located at the dermis layer, and the longer wavelengths penetrate the deeper tissue. This Cp can be used to assess ink depth in order to remove the tattoo ink completely without damage to the surrounding skin.

Original language	English
Title of host publication	Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications XIX
Editors	Dror Fixler, Ewa M. Goldys, Sebastian Wachsmann-Hogiu
Publisher	SPIE
ISBN (Electronic)	9781510648234
DOIs	https://doi.org/10.1117/12.2608530
State	Published - 2022
Event	Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications XIX 2022 - Virtual, Online Duration: 20 Feb 2022 → 24 Feb 2022

Publication series

Name	Progress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume	11976
ISSN (Print)	1605-7422

Conference

Conference	Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications XIX 2022
City	Virtual, Online
Period	20/02/22 → 24/02/22

Bibliographical note

Publisher Copyright:
Copyright © 2022 SPIE.

Keywords

Monte Carlo
crossover point
dermis layer
diffuse reflectance
tattoo ink
two-layer (2L)
wavelength

Access to Document

10.1117/12.2608530

Cite this

Rudraiah, P. S., Duadi, H., & Fixler, D. (2022). Extraction of absorption coefficients from two-layer phantoms based on crossover point in diffuse reflectance. In D. Fixler, E. M. Goldys, & S. Wachsmann-Hogiu (Eds.), Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications XIX Article 1197609 (Progress in Biomedical Optics and Imaging - Proceedings of SPIE; Vol. 11976). SPIE. https://doi.org/10.1117/12.2608530

Rudraiah, Pavitra S. ; Duadi, Hamootal ; Fixler, Dror. / Extraction of absorption coefficients from two-layer phantoms based on crossover point in diffuse reflectance. Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications XIX. editor / Dror Fixler ; Ewa M. Goldys ; Sebastian Wachsmann-Hogiu. SPIE, 2022. (Progress in Biomedical Optics and Imaging - Proceedings of SPIE).

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title = "Extraction of absorption coefficients from two-layer phantoms based on crossover point in diffuse reflectance",

abstract = "We performed a Monte Carlo simulation to detect the tattoo ink location in the dermis layer of the human skin. Tattoo ink (thickness of 0.2mm) was located between the upper dermis layer (thickness of 2mm) and the lower dermis layer (thickness of 8mm). An appreciable difference in the spatially resolved diffuse reflectance (DR) intensity was found between the skin without tattoo and the tattooed skin. The point at which the skin without tattoo and the tattooed skin DR intensity profile intersect is called the crossover point (Cp). The slopes were extracted from the DR intensity profile before and after the Cp for a wavelength range from 400-1,000nm. The slopes are extracted from each wavelength, and we plotted the calculated square slopes versus wavelength. In the shorter wavelengths region (400-500nm), two-layer (2L) behavior was observed, and in the longer wavelengths region (600-1,000nm), a single layer behavior was observed. This confirms the tattoo ink was located at the dermis layer, and the longer wavelengths penetrate the deeper tissue. This Cp can be used to assess ink depth in order to remove the tattoo ink completely without damage to the surrounding skin.",

keywords = "Monte Carlo, crossover point, dermis layer, diffuse reflectance, tattoo ink, two-layer (2L), wavelength",

author = "Rudraiah, {Pavitra S.} and Hamootal Duadi and Dror Fixler",

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Rudraiah, PS, Duadi, H & Fixler, D 2022, Extraction of absorption coefficients from two-layer phantoms based on crossover point in diffuse reflectance. in D Fixler, EM Goldys & S Wachsmann-Hogiu (eds), Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications XIX., 1197609, Progress in Biomedical Optics and Imaging - Proceedings of SPIE, vol. 11976, SPIE, Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications XIX 2022, Virtual, Online, 20/02/22. https://doi.org/10.1117/12.2608530

Extraction of absorption coefficients from two-layer phantoms based on crossover point in diffuse reflectance. / Rudraiah, Pavitra S.; Duadi, Hamootal; Fixler, Dror.
Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications XIX. ed. / Dror Fixler; Ewa M. Goldys; Sebastian Wachsmann-Hogiu. SPIE, 2022. 1197609 (Progress in Biomedical Optics and Imaging - Proceedings of SPIE; Vol. 11976).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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Rudraiah PS, Duadi H, Fixler D. Extraction of absorption coefficients from two-layer phantoms based on crossover point in diffuse reflectance. In Fixler D, Goldys EM, Wachsmann-Hogiu S, editors, Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications XIX. SPIE. 2022. 1197609. (Progress in Biomedical Optics and Imaging - Proceedings of SPIE). doi: 10.1117/12.2608530

Extraction of absorption coefficients from two-layer phantoms based on crossover point in diffuse reflectance

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Keywords

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