[Retracted] Deep Learning-Based Identification of Spinal Metastasis in Lung Cancer Using Spectral CT Images

Table 2

The SNR and CNR values under different energy levels.

The energy level	Number of foci	SNR	CNR
140 kVp	88	48.12 ± 20.13	7.38 ± 3.46
40 keV	88	49.33 ± 19.67	7.26 ± 3.63
60 keV	88	65.02 ± 24.86	7.67 ± 3.85
80 keV	88	47.28 ± 17.01	7.53 ± 3.68
100 keV	88	38.96 ± 14.17	7.14 ± 3.36
120 keV	88	36.37 ± 12.86	6.93 ± 3.25
140 keV	88	34.73 ± 12.25	6.77 ± 3.21