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Tissue Optical Modelling for Medical Devices, PDT Systems & Surgical Lasers

Light Propagation · Absorption · Scattering · Dosimetry

Ansys Lumerical FDTDMonte Carlo eXtremeAnsys Zemax OpticStudio

Overview

Tissue Modeling

Tissue modelling simulates light absorption, scattering, and fluorescence in biological materials — enabling the design of medical devices, PDT systems, OCT instruments, and surgical lasers with accurate dosimetry predictions. Monte Carlo photon transport through layered tissue with wavelength-dependent optical properties predicts the treatment volume for PDT and the signal depth profile for OCT — enabling device design optimisation without animal studies.

Industries Served

Medical DevicesHealthcareResearchBiotechnologyPharmaceuticals

Deliverables

Fluence Rate DistributionAbsorbed Dose MapsPDT Treatment Volume PredictionOCT Signal Depth Profile

Key Aspects

What Tissue Modeling Involves

01

Monte Carlo Photon Transport

Simulating the statistical path of photons through turbid biological tissue using Monte Carlo methods — computing fluence rate distribution and absorbed energy density.

02

Optical Property Characterisation

Specifying tissue optical properties — absorption coefficient, scattering coefficient, anisotropy factor, and refractive index — as a function of wavelength from published literature or measurement data.

03

PDT Dosimetry

Computing the photodynamic therapy light dose distribution in tissue — predicting the treatment volume and ablation boundary for a given source geometry and irradiance level.

04

OCT Signal Modelling

Simulating the optical coherence tomography signal from layered biological tissue — predicting penetration depth, signal-to-noise ratio, and sensitivity roll-off with depth.

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