J. Eur. Opt. Society-Rapid Publ. 22, 48( 2026) 475
Figure 2. Ballistic photon propagation simulation ejected photon distributions as a function of radial distance from the optical source center and angle( degrees off-axis relative to the optical source center) for a 500 lm diameter pore. Plots correspond to vertical pore positions( a) 1,( b) 0.5, and( c) 0 mm off-axis relative to the optical source center. The color bars represent normalized photon weights.
macro-anatomical layers of the scalp and skull, remaining robust against both localized geometric perturbations and subject-specific anatomical variations.
Detailed detected photon data for the mean cadaveric head model at a 30 mm source – detector separation are
Figure 3. Isometric views of spatial fluence color maps for the mean cadaveric head at a 30 mm source – detector separation: plots correspond to 500 diameter pore at vertical pore positions( a) 1,( b) 0.5, and( c) 0 mm off-axis relative to the optical source center. Black circles and squares indicate the optical source and detector positions, respectively. The color bars represent photon fluence on a logarithmic scale to enhance visibility across a wide dynamic range.