Table 4

Ruptured aneurysm imaging follow up (per-protocol analysis)

DSA at 6 months (range 3–9 months)IIIIIIaIIIbTotalInterobserver assessment*
(Kappa score†)
Modified Raymond Roy DSA510061.0 (perfect agreement)
IIIIII
Raymond Roy DSA51061.0 (perfect agreement)
YesNo
Adequate occlusion or not6061.0 (perfect agreement)
A1A2A3B1B2B3C1C2C3D
OKM000010000561.0 (perfect agreement)
MRA at 6 months (range 3–9 months)IIIIIIaIIIbTotal
Modified Raymond Roy MRA14120171.0 (perfect agreement)
IIIIII
Raymond Roy MRA1412171.0 (perfect agreement)
YesNo
Adequate occlusion or not152171.0 (perfect agreement)
CTA at 6 months (range 3–9 months)IIIIIIaIIIbTotal
Modified Raymond Roy CTA10001N/A
IIIIII
Raymond Roy CTA1001N/A
YesNo
Adequate occlusion or not101N/A
All imaging at 6 months (range 3–9 months)IIIIIIaIIIbTotal
Modified Raymond Roy1622020N/A
IIIIII
Raymond Roy162220N/A
YesNo
Adequate occlusion or not18220N/A

  • *Two readings, one core laboratory and other by a local reader, were compared. For all discrepant readings, the core laboratory assessment was used. The data show that estimates of occlusion rates were accurate when performed locally for MRA and DSA.

  • †Interreader reliability used weighted (or unweighted for 2×2) Cohen’s kappa. N/A: not applicable for ‘All imaging’ as data contain some DSA and MRA cases for same patient; insufficient data for CTA.

  • CTA, computed tomography angiography; DSA, digital subtraction angiography; MRA, magnetic resonance angiography; N/A, not applicable; OKM, O’Kelly Marotta grading.