Table 4.

Inter-observer region of interest analysis: Mean velocity and mean WSS for the test scans and the retest scans averaged over all subjects

			Inner AAo			Outer AAo			Inner arch			Outer arch			Inner DAo			Outer DAo
			Observer 1	Observer 2	P	Observer 1	Observer 2	P	Observer 1	Observer 2	P	Observer 1	Observer 2	P	Observer 1	Observer 2	P	Observer 1	Observer 2	P
Velocity	Test	Mean velocity (m/s)	0.52 ± 0.13	0.52 ± 0.13	0.91	0.50 ± 0.11	0.49 ± 0.11	0.95	0.49 ± 0.14	0.47 ± 0.13	0.54	0.45 ± 0.14	0.44 ± 0.13	0.63	0.51 ± 0.17	0.48 ± 0.16	0.54	0.50 ± 0.17	0.48 ± 0.16	0.54
		CV Velocity (%)	3			3			3			3			4			4
		ICC Velocity (−)	1.0			1.0			1.0			1.0			1.0			1.0
	Retest	Mean velocity (m/s)	0.55 ± 0.12	0.54 ± 0.14	0.77	0.51 ± 0.12	0.51 ± 0.13	0.95	0.50 ± 0.13	0.49 ±0.13	0.84	0.46 ± 0.13	0.45 ± 0.13	0.84	0.53 ± 0.19	0.51 ± 0.19	0.70	0.52 ± 0.19	0.50 ± 0.19	0.63
		CV Velocity (%)	5			4			2			2			2			2
		ICC Velocity (−)	1.0			1.0			1.0			1.0			1.0			1.0
WSS	Test	Mean WSS (Pa)	0.60 ± 0.17	0.60 ± 0.16	0.80	0.55 ± 0.14	0.54 ± 0.14	0.80	0.58 ± 0.19	0.57 ± 0.18	0.80	0.51 ± 0.17	0.50 ± 0.17	0.84	0.58 ± 0.20	0.58 ± 0.19	0.91	0.60 ± 0.22	0.60 ± 0.21	0.98
		CV WSS(%)	5			4			3			2			4			4
		ICC WSS (−)	1.0			1.0			1.0			1.0			1.0			1.0
	Retest	Mean WSS (Pa)	0.62 ± 0.15	0.61 ± 0.15	0.73	0.56 ± 0.14	0.57 ± 0.15	0.98	0.61 ± 0.18	0.61 ± 0.19	0.91	0.53 ± 0.17	0.53 ± 0.17	1	0.62 ± 0.25	0.61 ± 0.24	0.98	0.63 ± 0.27	0.63 ± 0.26	0.91
		CV WSS (%)	6			7			1			1			2			3
		ICC WSS (−)	0.9			0.9			1.0			1.0			1.0			1.0