Table 5. Tolerance of HbT images recovered using two-composition-prior guided reconstruction to various experimental errors in all phantom cases.

(a) Metric 1: Overall RMSE ≤ 2 µM
	Case 1	Case 2	Case 3	Case 4	Case 5	Mean	std
Offset in x-direction (mm)	0.26	0.28	0.77	0.84	0.99	0.63	0.34
Source plate rotation (°)	0.12	0.14	0.33	0.33	0.41	0.27	0.13
Source plate L-R tilt (–°)	−0.52	−0.49	−1.14	−1.13	−1.25	-0.91	0.37
Source plate L-R tilt ( + °)	0.58	0.36	1.00	1.17	1.41	0.90	0.43
Source plate N-C tilt (°)	0.13	0.08	0.34	0.42	0.63	0.32	0.22
Breast expansion (%)	0.55	0.57	1.45	1.37	1.68	1.12	0.53
Thickness increase (%)	1.22	0.78	1.43	1.51	1.98	1.38	0.44
Cross-talk (‰)	0.12	0.04	0.15	0.16	0.25	0.14	0.08
Light piping (‰)	0.52	0.35	0.92	1.07	1.84	0.94	0.58
(b) Metric 2: R, HbTt, or HbTn change ≤ 5%
	Case 1	Case 2	Case 3	Case 4	Case 5	Mean	std
Offset in x-direction (mm)	0.90	1.75	1.27	1.76	1.22	1.38	0.37
Source plate rotation (°)	0.42	0.79	1.56	1.56	1.34	1.13	0.51
Source plate L-R tilt (–°)	−0.77	−0.66	−0.65	−0.65	−0.64	-0.67	0.05
Source plate L-R tilt ( + °)	0.70	0.69	0.67	0.69	0.67	0.68	0.01
Source plate N-C tilt (°)	0.64	0.39	0.37	0.39	0.44	0.45	0.11
Breast expansion (%)	3.91	4.16	1.91	>10.00*	>10.00*	3.33**	1.23**
Thickness increase (%)	3.56	1.72	1.36	1.33	1.36	1.87	0.96
Cross-talk (‰)	0.70	0.42	0.23	0.17	0.36	0.38	0.21
Light piping (‰)	0.98	1.12	0.98	0.80	1.56	1.09	0.29