MCX

MCX simulates polarized light propagation in complex three-dimensional biological tissues using GPU-accelerated Monte Carlo methods to model polarization-sensitive light–tissue interactions.

Key Features:

• Polarization Modeling: Simulates polarized light interactions in heterogeneous three-dimensional tissues and arbitrary complex media structures.
• Voxelated Domain Representation: Represents the simulation domain as voxels where each voxel can be associated with spherical scatterers of varying radii and densities.
• Stokes Vector Propagation: Propagates and updates the Stokes vector for each photon packet to enable spatially resolved polarization measurements across detectors or domain surfaces.
• GPU Acceleration: Implements GPU acceleration achieving a 931-fold speedup compared to CPU-based simulators.
• Validation and Reliability: Validated against reference CPU-based simulators across homogeneous and layered domains with excellent agreement.

Scientific Applications:

• Biophotonics: Supports research into polarized light interactions with biological tissues for fundamental and applied studies.
• Medical Imaging: Enables simulation studies relevant to polarization-sensitive optical imaging modalities.
• Diagnostics: Facilitates investigation of polarization-based contrast mechanisms for diagnostic applications.
• Therapeutic Techniques: Allows assessment of polarized light behavior in tissue environments relevant to light-based therapies.
• Polarization-based Method Development: Assists development and evaluation of polarization-sensitive algorithms and measurement approaches.

Methodology:

Uses a GPU-accelerated polarized Monte Carlo algorithm operating over voxelated domains, updates the Stokes vector per photon packet, supports voxel-associated spherical scatterers with specified radii and densities, and has been validated against CPU-based reference simulators in homogeneous and layered domains.