Table 1.

Comparison of SNU, contrast, ${\mathit{\sigma }}_a$, CDR and CDR increase ratios on the uncorrected image and the corrected images using the proposed method for six patients

Patient #	SNU (%) (Before/After)		Contrast (cm−1) (Before/After)		${\mathit{\sigma }}_a$ (cm−1) (Before/After)		CDR (Before/After)		CDR Increase ratio
Coronal view
1	9.32	2.45	0.034	0.050	0.010	0.010	3.44	5.00	1.45
2	6.50	1.47	0.045	0.071	0.007	0.009	6.09	7.63	1.25
3	3.89	0.85	0.032	0.046	0.006	0.008	5.17	6.10	1.18
4	7.08	2.06	0.032	0.049	0.007	0.007	4.65	6.88	1.48
5	13.70	3.40	0.035	0.041	0.009	0.009	3.90	4.70	1.21
6	9.10	1.20	0.037	0.066	0.010	0.010	3.80	6.50	1.71
Average	8.27	1.91	0.036	0.054	0.008	0.009	4.51	6.14	1.38
Sagittal view
1	8.96	3.96	0.061	0.073	0.031	0.026	2.00	2.79	1.40
2	4.45	3.08	0.041	0.067	0.016	0.017	2.58	4.03	1.56
3	3.35	2.74	0.031	0.045	0.006	0.007	5.41	6.33	1.17
4	6.66	2.90	0.038	0.040	0.010	0.009	3.70	4.44	1.20
5	9.50	3.80	0.039	0.046	0.008	0.009	4.60	5.10	1.11
6	6.10	1.50	0.048	0.070	0.016	0.011	3.00	6.60	2.20
Average	6.50	3.00	0.043	0.057	0.015	0.013	3.55	4.88	1.44