Table 2. True [24,37] absorption coefficients (mm⁻¹) for each region in the heterogeneous object at six different wavelengths.

	580 nm	590 nm	600 nm	610 nm	620 nm	630 nm
Adipose	0.0073	0.0043	0.0021	0.0014	0.0010	0.0008
Liver	0.6474	0.3993	0.1899	0.1200	0.0824	0.0647
Bowel	0.0198	0.0128	0.0063	0.0040	0.0028	0.0023
Kidney	0.1209	0.0746	0.0356	0.0226	0.0156	0.0123
Bone	0.1040	0.0670	0.0325	0.0207	0.0142	0.0112