Table 6. .

CNR measured left (L) and right (R) using different MR sequences with head (H) and surface (S) coil

Group	Closed-mouth (R)		Opened-mouth (R)	Closed-mouth (L)		Opened-mouth (L)	p值 (H-S)
CNR	Sag PDWI	Cor T 2WI	Sag T 2WI	Sag PDWI	Cor T 2WI	Sag T 2WI
CNR1 (H)	1.69 ± 0.28+	3.84 ± 1.01	1.97 ± 0.65	1.64 ± 0.31+	3.83 ± 1.19	1.98 ± 0.56	p + < 0.05
CNR1 (S)	1.50 ± 0.35	3.87 ± 1.53	2.02 ± 0.63	1.51 ± 0.39+	3.88 ± 1.21	2.01 ± 0.88
CNR2 (H)	2.31 ± 0.80	4.12 ± 1.19#	2.69 ± 0.84	2.32 ± 0.64	4.15 ± 1.32#	2.70 ± 0.81	p # < 0.05
CNR2 (S)	2.28 ± 0.55	5.59 ± 1.66#	2.73 ± 0.54	2.28 ± 0.49	5.58 ± 1.52#	2.76 ± 0.53
CNR4 (H)	2.48 ± 0.72	6.91 ± 1.63&	2.65 ± 0.76	2.47 ± 0.57	7.02 ± 1.57&	2.67 ± 0.63	p & < 0.05
CNR4 (S)	2.43 ± 0.70	9.95 ± 1.71&	2.79 ± 0.67	2.45 ± 0.45	10.01 ± 1.62&	2.80 ± 0.61
CNR5 (H)	3.30 ± 1.02	13.13 ± 2.06*	2.34 ± 1.34*	3.30 ± 0.91	13.09 ± 1.91*	3.36 ± 1.23*	p* < 0.05
CNR5 (S)	3.36 ± 0.81	17.85 ± 2.02*	4.24 ± 0.87*	3.31 ± 0.68	17.83 ± 2.03*	4.25 ± 0.85*
P值(R-L)	-	-	-	p > 0.05	p > 0.05	p > 0.05	-

CNR, contrast-to-noise ratio; PDWI, proton density-weighted imaging; T ₂WI, T ₂ weighted image.