Table 3.

Intraobserver variability of segmental WSS analysis of the peak systolic cardiac phase from the scan exams

	WSSmax (mPa)						WSSmean (mPa)
	Bland–Altman		COV (%)	Correlation*		ICC	Bland–Altman		COV (%)	Correlation*		ICC
	Mean difference (mPa)	Limits of agreement (± 2σ) (mPa)		r	P		Mean difference (mPa)	Limits of agreement (± 2σ) (mPa)		r	P
Proximal AAo	47.4	628.3	13	0.96	<0.001	0.94	21.1	100.6	5	0.99	< 0.001	0.98
Distal AAo	87.4	369.6	9	0.78	0.008	0.87	17.8	48.3	2	0.95	< 0.001	0.99
Aortic arch	69.1	157.4	4	0.95	< 0.001	0.97	14.9	48.3	2	0.99	< 0.001	0.99
Proximal DAo	− 1.6	139.9	3	0.99	< 0.001	0.99	12.3	68.7	2	1.00	< 0.001	0.98
Distal DAo	− 51.7	495.9	8	0.93	< 0.001	0.89	− 16.3	82.2	3	0.98	< 0.001	0.98

AAo ascending aorta, DAo descending aorta, COV coefficient of variation, ICC intraclass correlation coefficient

*Spearman correlation coefficient