Table 2.

ICCs with 95% CI of inter- and intra-observer agreement, and scan repeatability in morphologic measurements for each 3D VWI sequence.

ICC (95% CI)		Lumen area	Vessel wall area	Lumen volume	Vessel wall volume	Plaque burden	Percent stenosis	Remodeling ratio
Whole-brain	Inter-observer	0.97 (0.94-0.99)	0.98 (0.94-0.99)	0.99 (0.94-0.99)	0.99 (0.98-0.99)	0.86 (0.71-0.93)	0.88 (0.77-0.94)	0.79 (0.59-0.89)
	Intra-observer	0.99 (0.98-0.99)	0.99 (0.97-0.99)	0.99 (0.99-0.99)	0.99 (0.99-0.99)	0.95 (0.90-0.97)	0.96 (0.92-0.98)	0.95 (0.90-0.97)
	Inter-scan	0.99 (0.98-0.99)	0.99 (0.96-0.99)	0.99 (0.97-0.99)	0.99 (0.99-0.99)	0.90 (0.78-0.95)	0.95 (0.90-0.97)	0.85 (0.72-0.93)
Targeted	Inter-observer	0.81 (0.64-0.90)	0.95 (0.91-0.98)	0.96 (0.93-0.98)	0.99 (0.97-0.99)	0.71 (0.42-0.85)	0.86 (0.71-0.93)	0.76 (0.53-0.88)
	Intra-observer	0.96 (0.93-0.98)	0.99 (0.98-0.99)	0.99 (0.94-0.99)	0.99 (0.98-0.99)	0.84 (0.69-0.92)	0.89 (0.79-0.94)	0.84 (0.69-0.92)
	Inter-scan	0.84 (0.70-0.92)	0.97 (0.94-0.99)	0.99 (0.99-0.99)	0.99 (0.99-0.99)	0.82 (0.62-0.91)	0.94 (0.89-0.97)	0.80 (0.61-0.88)

Note: ICC= intra-class correlation coefficient; CI= confidence interval; VWI=vessel wall imaging.