Table 3.

Image Quality Scores for Oropharyngeal Cancer MRI Protocols Assessed with and without using Immobilization Devices

Image quality score	Head motion Mean score (SD)		Tongue blur/ghosting Mean score (SD)		Reproducibility Mean score (SD)		Overall Mean score (SD)
	Ob1	Ob2	Ob1	Ob2	Ob1	Ob2
Group 1 (50 scans)	1.85 (0.83)	1.98 (0.79)	1.59 (0.74)	1.75 (0.62)	1.65 (0.83)	1.47 (0.50)	1.72 (0.75)
Group 2 (29 scans)	2.54 (0.69)	2.79 (0.49)	2.43 (0.79)	2.55 (0.63)	2.63 (0.49)	2.57 (0.50)	2.58 (0.60)
P value	<0.0002*	<0.0001*	<0.0001*	<0.0001*	<0.0001*	<0.0001*	<0.0001*

Abbreviations: Ob=Observer, SD=standard deviation