Mr. Hemant Dixit Profile

Hemant Dixit

at Savitribai Phule Pune Univ.

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Proceedings Article | 3 March 2022 Poster + Presentation + Paper

Skin mimicking solid optical tissue phantom fulfillment and its characterization

Ajay Kumar, Sarika Hinge, Hemant Dixit, Rajesh Kanawade, Gauri Kulkarni

Proceedings Volume 11934, 119340L (2022) https://doi.org/10.1117/12.2609577

KEYWORDS: Tissue optics, Skin, Optical properties, Solids, Tissues, Scattering, Absorption, Diagnostics

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Skin mimicking optical tissue phantoms are widely used in diagnostics systems for characterization, optimization, routine calibration and validation. In general, solid phantoms are more preferred in comparison to liquid phantoms. Therefore, our aim is to prepare and characterize the solid tissue phantoms having skin equivalent optical properties. In this work, we have used epoxy resin and hardener as a base material and titanium oxide (TiO₂) nanoparticles and ink as a scatterer and absorber media, respectively. The total transmission (Tt), collimated transmission (Tc), and diffuse reflectance (Rd) spectra of the developed phantoms were measured with an integrating sphere installed in UV-VIS spectrometer within the wavelength range 400-700 nm. To characterize the optical properties such as absorption (μa), reduced scattering (μs’), and anisotropy factor (g) of the developed tissue phantoms, the numerical model based on Inverse Adding Doubling (IAD) has been used. With various concentrations of absorber and scatterer, a calibration curve was prepared. The calculated experimental optical properties from IAD matched with the predicted intrinsic optical properties of the skin. Thus, the preliminary results suggest that the recipe used in this study may be used as an alternative approach to developing skin mimicking solid optical phantom for diagnostics system applications.

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