. 2020 Oct 6;10:16623. doi: 10.1038/s41598-020-73658-0

Table 1.

Comparisons of areas in intracranial arteries in two positions.

Vessels	Side	Posture	N	Area (mm²)^a	Change ratio (%)	95% CI of difference (mm²)^b	AdjustedP value^c	Intrarater reliability/interrater reliability
Internal carotid artery	Right	Supine	20	8.00 ± 1.88	+ 4.41	− 0.66 to 0.18	1.0	0.880/0.851
	Right	Upright	20	8.25 ± 1.73	+ 4.41	− 0.66 to 0.18	1.0	0.741/0.715
	Left	Supine	20	8.10 ± 1.85	+ 2.79	− 0.76 to 0.18	1.0	0.772/0.787
	Left	Upright	20	8.39 ± 2.40	+ 2.79	− 0.76 to 0.18	1.0	0.943/0.921
Middle cerebral artery	Right	Supine	20	5.00 ± 1.09	+ 5.47	− 0.51 to 0.12	1.0	0.934/0.928
	Right	Upright	20	5.20 ± 1.02	+ 5.47	− 0.51 to 0.12	1.0	0.848/0.818
	left	Supine	20	5.03 ± 1.20	+ 5.88	− 0.61 to 0.11	1.0	0.871/0.918
	left	upright	20	5.28 ± 1.34	+ 5.88	− 0.61 to 0.11	1.0	0.722/0.739
Vertebral artery	Right	Supine	19	6.21 ± 2.49	+ 1.8	− 0.41 to 0.64	1.0	0.896/0.860
	Right	Upright	19	6.10 ± 2.15	+ 1.8	− 0.41 to 0.64	1.0	0.935/0.900
	Left	Supine	20	7.35 ± 2.86	− 0.53	− 0.52 to 0.65	1.0	0.980/0.978
	Left	Upright	20	7.28 ± 2.98	− 0.53	− 0.52 to 0.65	1.0	0.954/0.956
Basilar artery		Supine	20	5.97 ± 1.92	+ 0.52	− 0.27 to 0.31	1.0	0.816/0.764
Basilar artery		Upright	20	5.95 ± 1.92	+ 0.52	− 0.27 to 0.31	1.0	0.921/0.883

^aThe area is presented as the mean ± standard deviation.

^bCI: confidence interval.

^cAll P values are adjusted for multiple comparisons.