Skip to main content
. 2018 Jun 14;20:39. doi: 10.1186/s12968-018-0453-z

Table 2.

Vessel wall and lumen measurements at the most stenotic plaques and corresponding ICC values of inter-scan, intra-observer, and inter-observer reproducibilities of 3D intracranial vessel wall MR in patients

Inter-scan (n = 9) Intra-observer (n = 9) Inter-observer (n = 9)
1st scan, 1st observer, 1st measurement
(mean ± SD)
2nd scan, 1st observer
(mean ± SD)
ICC
(95% CI)
1st scan, 1st observer, 2nd measurement
(mean ± SD)
ICC
(95% CI)
1st scan, 2nd observer
(mean ± SD)
ICC
(95% CI)
Lumen volume (mm3) 25.1 ± 18.2 26.57 ± 21.33 0.99
(0.94–0.99)
25.7 ± 17.6 0.99
(0.99–0.99)
23.7 ± 18.0 0.99
(0.96–0.99)
Wall volume (mm3) 54.2 ± 32.6 55.36 ± 31.82 0.99
(0.97–0.99)
54.5 ± 29.4 0.99
(0.96–0.99)
50.2± 26.3 0.98
(0.90–0.99)
Normalized wall index 0.69 ± 0.08 0.69 ± 0.10 0.93
(0.66–0.98)
0.69 ± 0.09 0.98
(0.89–0.99)
0.69 ± 0.10 0.92
(0.65–0.98)
Mean wall thickness (mm) 0.90 ± 0.29 0.92 ± 0.28 0.97
(0.89–0.99)
0.91 ± 0.25 0.97
(0.89–0.99)
0.88 ± 0.25 0.97
(0.86–0.99)
Maximum wall thickness (mm) 1.35 ± 0.37 1.39 ± 0.31 0.91
(0.59–0.98)
1.44 ± 0.37 0.94
(0.76–0.99)
1.25 ± 0.29 0.87
(0.49–0.97)

SD standard deviation, ICC intra-class correlation coefficient, CI confidence intervals