Table 1. Summary of phantom optical properties used to test the qFI model in order of increasing transport albedo, each used with 5 µg/ml PpIX concentration.

${\mu }_a$ (mm−1)	$\mu {\text{'}}_s$ (mm−1)	a’
6.0	1.5	0.20
6.0	2.0	0.25
4.0	1.5	0.27
4.0	2.0	0.33
1.4	1.0	0.41
2.0	1.5	0.42
3.0	2.3	0.43
2.0	2.3	0.54