Table 1. Detailed results of the image analysis.

Paranasal sinus	Abnormality	Modality		P value of X2 tests
		CT (n=54)	MRI (n=61)
Right maxillary	Normal	93.6%	67.2%	P<0.01
	Partial opacification	6.4%	31.1%
	Total opacification	0%	1.6%
Left maxillary	Normal	87.2%	52.5%	P<0.001
	Partial opacification	10.6%	45.9%
	Total opacification	2.1%	1.6%
Right anterior ethmoid	Normal	75.9%	47.5%	P=0.001
	Partial opacification	20.4%	52.5%
	Total opacification	3.7%	0%
Left anterior ethmoid	Normal	77.8%	49.2%	P<0.01
	Partial opacification	20.4%	50.8%
	Total opacification	1.9%	0%
Right posterior ethmoid	Normal	81.5%	49.2%	P<0.001
	Partial opacification	18.5%	50.8%
	Total opacification	0%	0%
Left posterior ethmoid	Normal	77.8%	44.3%	P=0.001
	Partial opacification	22.2%	54.1%
	Total opacification	0%	1.6%
Right sphenoid	Normal	87%	78.3%	P=0.37
	Partial opacification	13%	20.0%
	Total opacification	0%	1.7%
Left sphenoid	Normal	85.2%	78.3%	P=0.47
	Partial opacification	14.8%	20.0%
	Total opacification	0%	1.7%
Right frontal	Normal	92.6%	84.5%	P=0.34
	Partial opacification	5.6%	13.8%
	Total opacification	1.9%	1.7%
Left frontal	Normal	92.6%	79.3%	P<0.05
	Partial opacification	7.4%	20.7%
	Total opacification	0%	0%
Right osteomeatal complex	Patent	100%	81.3%	P=0.13
	Blocked	0%	18.8%
Left osteomeatal complex	Patent	100%	81.3%	P=0.15
	Blocked	0%	18.8%

n, sample size; X², Chi square test