Table 4.

Intraclass correlation coefficient (ICC) for inter-reviewer and intra-reviewer agreement and 95% confidence interval (CI)

Structure	Inter-observer ICC (95% CI)	Intra-observer ICC (95% CI)
Aortic root	0.9 (0.85, 0.94)	0.99 (0.99, 1)
Sinotubular junction	0.89 (0.83, 0.93)	0.99 (0.99, 1)
Mid ascending aorta	0.88 (0.82, 0.94)	0.99 (0.99, 1)
Mid aortic arch	0.97 (0.95, 0.98)	0.99 (0.98, 0.99)
Mid descending	0.91 (0.85, 0.94)	0.97 (0.98, 0.99)
Distal descending aorta	0.94 (0.92, 0.99)	0.98 (0.99, 0.99)

Intraclass correlation coefficient (ICC) for inter-reviewer and intra-reviewer agreement and 95% confidence interval (CI)