Table 2.

Visibility and delineation of different anatomical structures of the temporomandibular joint at 1.5 and 3.0 T

Anatomical structure	1.5 T						3.0 T
	Reader 1		Reader 2		Interrater reliability		Reader 1		Reader 2		Interrater reliability
	Mean	SD	Mean	SD	Kappa	p-value	Mean	SD	Mean	SD	Kappa	p-value
Disc
Visibility anterior band	2.75	0.53	2.79	0.58	0.91	<0.001	2.00	0.65	2.04	0.69	0.92	<0.001
Visibility intermediate zone	2.75	0.67	2.79	0.65	0.78	<0.001	2.12	0.79	2.20	0.77	0.87	<0.001
Visibility posterior band	2.83	0.63	2.87	0.61	0.77	<0.001	2.12	0.79	2.12	0.79	0.87	<0.001
Delineation	2.37	0.49	2.33	0.48	0.72	<0.001	2.20	0.72	2.25	0.67	0.93	<0.001
Bilaminar zone
Visibility	2.79	0.65	2.75	0.60	0.92	<0.001	2.30	0.82	2.30	0.82	0.86	<0.001
Delineation	2.70	0.62	2.70	0.55	0.84	<0.001	2.39	1.07	2.47	1.08	0.88	<0.001
Mandibular fossa
Visibility	2.25	0.60	2.20	0.58	0.76	<0.001	2.04	0.62	2.04	0.55	0.83	<0.001
Delineation	2.25	0.44	2.29	0.46	0.89	<0.001	2.00	0.59	2.04	0.55	0.73	<0.001
Mandibular condyle
Visibility	2.20	0.65	2.12	0.74	0.86	<0.001	2.04	0.69	2.00	0.65	0.78	<0.001
Delineation	2.41	0.77	2.45	0.77	0.93	<0.001	2.16	0.70	2.08	0.65	0.86	<0.001
Pterygoid muscle
Visibility	2.75	0.44	2.79	0.41	0.64	0.001	1.87	0.74	1.87	0.68	0.85	<0.001
Delineation	2.41	0.50	2.45	0.50	0.74	<0.001	1.83	0.48	1.91	0.58	0.81	<0.001
Overall image quality	2.62	0.49	2.58	0.50	0.73	<0.001	1.95	0.55	1.91	0.50	0.90	<0.001

SD, standard deviation.

Mean and SD are given for each structure. Grading was based on Likert scales ranging from 1 (excellent visibility) to 5 (not visible). For interrater reliability, kappa values and corresponding p-values are given.