Reference-free determination of tissue absorption coefficient by modulation transfer function characterization in spatial frequency domain

Table 1 Statistical and error analyses of the retrieved absorption coefficients

Expected absorption coefficient (\(\mu_{a}^{expect}\)) [mm⁻¹]	Mean (\(\mu_{a}^{mean}\)) [mm⁻¹]		Variance [mm⁻²]		Error (e) [%]
	\(\mu^{\prime}_{s}\) = 1.0	\(\mu^{\prime}_{s}\) = 2.0	\(\mu^{\prime}_{s}\) = 1.0	\(\mu^{\prime}_{s}\) = 2.0	\(\mu^{\prime}_{s}\) = 1.0	\(\mu^{\prime}_{s}\) = 2.0
0.0100	0.0104	0.0093	7.2 × 10⁻⁷	6.8 × 10⁻⁷	4.00	7.00
0.0200	0.0200	0.0203	1.9 × 10⁻⁶	5.1 × 10⁻⁷	0.00	1.50
0.0300	0.0310	0.0297	3.7 × 10⁻⁶	1.7 × 10⁻⁶	3.33	1.00
0.0400	0.0397	0.0388	6.0 × 10⁻⁶	2.8 × 10⁻⁶	0.75	3.00
0.0500	0.0507	0.0498	1.5 × 10⁻⁵	1.3 × 10⁻⁶	1.04	0.40
0.0600	0.0626	0.0584	2.3 × 10⁻⁵	7.2 × 10⁻⁶	4.33	2.67
0.0700	0.0734	0.0691	2.2 × 10⁻⁵	1.0 × 10⁻⁵	4.86	1.29

ISSN: 1475-925X