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Table 6: EAF T2WI grade by CG-1 versus postdiscogram CT features of internal derangement—39 discs
Annular Fissure T2WI CG-1 Grade Discogram Pain Response and Internal Derangement Features
Severe Pain 
Concordant Pain Nonconcordant Pain Negative for Pain Total
RDef DEG RDef DEG RDef DEG RDef DEG
4 2 3 3 0 0 0 5 3
3 4 2 2 1 1 2 7 5
2 1 2 1 2 1 1 3 5
1 2 6 0 1^{^a} 1 1 3 8
Total 9 13 6 4^{^a} 3 4 18 21
Note:—DEG indicates degenerative change Dallas Grade 3 except for 1 disc; RDef, all radial defects (Dallas Grade 3); CG-1, consensus group 1.
↵a Dallas Grade 1.

Annular Fissure T2WI CG-1 Grade	Discogram Pain Response and Internal Derangement Features
	Severe Pain
	Concordant Pain		Nonconcordant Pain		Negative for Pain		Total
	RDef	DEG	RDef	DEG	RDef	DEG	RDef	DEG
4	2	3	3	0	0	0	5	3
3	4	2	2	1	1	2	7	5
2	1	2	1	2	1	1	3	5
1	2	6	0	1^{^a}	1	1	3	8
Total	9	13	6	4^{^a}	3	4	18	21