Development of a beam propagation method to simulate the point spread function degradation in scattering media

Area of Science:

• Optical imaging
• Wave optics
• Biophysics

Background:

• Scattering significantly limits imaging depth in deep tissue optical imaging.
• Understanding scattering's impact is crucial for advancing optical microscopy techniques.
• Characterizing light-tissue interactions is key for improving image resolution and penetration.

Purpose of the Study:

• To develop a forward model for characterizing scattering effects in deep tissue optical imaging.
• To link macroscopic optical properties to wavefront phase mask parameters.
• To analyze point-spread function degradation in the ballistic to diffusive light transport transition.

Main Methods:

• Developed a forward model using the beam propagation method.
• Established a connection between media optical properties and phase mask statistical parameters.
• Analyzed point-spread function degradation using wave-optic simulations.

Main Results:

• Quantified the degradation of the point-spread function due to scattering.
• Characterized the transition from ballistic to diffusive light transport effects on image quality.
• Provided a simulation toolkit for analyzing scattering in scanning microscopy.

Conclusions:

• The developed forward model effectively analyzes scattering's impact on image quality in deep tissue optical imaging.
• The wave-optic simulation toolkit aids in understanding and mitigating scattering effects.
• Open-source implementation facilitates further research in optical imaging and microscopy.