Table 1.

Summary of fluorescence signal decay length constants from exponential fits to measured phantom data (from z₀ = 0 to 3l_s) and predicted in Monte Carlo data, with and without including the effect of heterogeneous collection efficiency.

	Measured length constants, $l_s^m∕l_s$
	Phantom measurements				Monte Carlo data
ls (μm)	χ = 10	χ = 25	χ = 62	χ = 300	Homogeneous collection	Heterogeneous collection
40	0.43	0.45	0.43	0.45	0.50	0.48
80	0.40	0.43	0.41	0.41	0.46	0.44
120	0.43	0.45	0.45	0.43	0.46	0.43