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Table 4: Image noise, signal-to-noise ratio, and contrast-to-noise ratio for each imaging technique^{^a}
Noise SNR_b CNR_(b/m) CNR_(b/a) CNR_(m/a)
CT 29.28 ± 9.39 100.35 ± 33.1 97.03 ± 31.63 163.80 ± 54.81 66.76 ± 23.31
Conebeam CT 46.76 ± 15.84 25.33 ± 16.73 28.45 ± 18.11 50.46 ± 31.9 22 ± 14
Difference 17.48^{^b} 75.02^{^b} 68.58^{^b} 113.34^{^b} 44.76^{^b}
Note:—SNR_b indicates SNR of the bone; CNR_(b/m), contrast between the bone and the muscle-to-noise ratio; CNR_(b/a), contrast between bone and air; CNR_(m/a), contrast between muscle and air.
↵a Data are median values ± SD.
↵b P < .001.

	Noise	SNR_b	CNR_(b/m)	CNR_(b/a)	CNR_(m/a)
CT	29.28 ± 9.39	100.35 ± 33.1	97.03 ± 31.63	163.80 ± 54.81	66.76 ± 23.31
Conebeam CT	46.76 ± 15.84	25.33 ± 16.73	28.45 ± 18.11	50.46 ± 31.9	22 ± 14
Difference	17.48^{^b}	75.02^{^b}	68.58^{^b}	113.34^{^b}	44.76^{^b}