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Table 3: Qualitative evaluation of image-quality scores of representative structures
Representative Structures Hybrid-IR+MAR (Mean) MBIR+MAR (Mean) P Value^{^a}
Apex of the tongue 2.78 ± 0.72 3.02 ± 0.75 <.01^{^b}
Base of the tongue 4.11 ± 0.29 4.27 ± 0.41 <.01^{^b}
Parapharyngeal space 4.58 ± 0.33 4.68 ± 0.27 <.01^{^b}
Superior portion of internal jugular vein 4.77 ± 0.24 4.88 ± 0.18 <.01^{^b}
Parotid gland 4.50 ± 0.40 4.67 ± 0.37 <.01^{^b}
↵a Wilcoxon signed rank test.
↵b Significant difference.

Representative Structures	Hybrid-IR+MAR (Mean)	MBIR+MAR (Mean)	P Value^{^a}
Apex of the tongue	2.78 ± 0.72	3.02 ± 0.75	<.01^{^b}
Base of the tongue	4.11 ± 0.29	4.27 ± 0.41	<.01^{^b}
Parapharyngeal space	4.58 ± 0.33	4.68 ± 0.27	<.01^{^b}
Superior portion of internal jugular vein	4.77 ± 0.24	4.88 ± 0.18	<.01^{^b}
Parotid gland	4.50 ± 0.40	4.67 ± 0.37	<.01^{^b}