Table 4.

For a different location from the calibration, estimated protein thicknesses from the fit and true thicknesses of the different ROIs of the 4 cm phantom as a function of the glandular ratio (t_w+t_p)∕(t_w+t_p+t_l).

% protein	% fibroglandular ratio	Water thickness	Lipid thickness	Protein thickness	Estimated protein thickness
5	1	4	0	0.959	0.971
5	0.75	3	1	0.661	0.671
5	0.5	2	2	0.486	0.441
5	0.25	1	3	0.236	0.232
10	1	4	0	0.661	0.712
10	0.75	3	1	0.486	0.486
10	0.5	2	2	0.317	0.299
10	0.25	1	3	0.159	0.160
20	1	4	0	0.317	0.380
20	0.75	3	1	0.236	0.234
20	0.5	2	2	0.159	0.155
20	0.25	1	3	0.078	0.083
30	1	4	0	0.159	0.230
30	0.75	3	1	0.099	0.097
30	0.5	2	2	0.078	0.078
30	0.25	1	2	0.041	0.050
0	0	0	4	0	−0.007
0	0	0	2	0	0.031