Fluorescence photon migration by the boundary element method
Journal of Computational Physics
Biological feature isolation by wavelets in biospeckle laser images
Computers and Electronics in Agriculture
Light transport in tissue by 3D Monte Carlo: Influence of boundary voxelization
Computer Methods and Programs in Biomedicine
Optimization of the Monte Carlo code for modeling of photon migration in tissue
Computer Methods and Programs in Biomedicine
Computers and Electronics in Agriculture
| Hi-index | 0.00 |
The propagation of laser light in kiwifruit (Actinidia deliciosa) tissue was measured by backscattering imaging and modelled with the Monte Carlo (MC) method. The parameters of the vision system (8bit/channel camera, 27.42@mm/pixel resolution) and the laser module (785nm, 45mW, O1mm) were utilized in simulation. The required number of the photons was optimized with time-resolved MC model. The injected photon pulse travelled further than the beam radius and the calculated intensity fell below the noise level of the camera within 1ns time. This short pulse contains 2.49x10^8 photons and its application reduced computation load compared to the amount emitted within the integration time of 0.5-8.3ms. The statistical effects of the optical properties of the tissue, scattering coefficient (@m"s) absorption coefficient (@m"a) and anisotropy factor (g), on photon flux was evaluated within +/-20% range relative to expected mean values of @m"a=0.9cm^-^1 and @m"s=40cm^-^1. The anisotropy factor was taken into account using the Heyney-Greenstein phase function and was adjusted to g=0.8+/-20%. Because individual significance of each optical property was also analysed, scattering (@m"s) and transport corrected reduced scattering coefficients (@m^'"s=[1-g]@m"s) must be distinguished. The multi-factor ANOVA test pointed out the highest importance (p