Table 1.

Results of the observer study rating the visibility without (left column) and with MAR (right column). The rows “Stent Visibility”, “Vessel Visibility”, and “Relationship” show the summarized results to the 3-point scale questions. Given are the % overall agreement (i.e. the number of cases that all reviewers agreed in total, calculated using Fleiss’ method), the % agreement for a score 1 (i.e. the number of cases all reviewers agreed on giving a score 1), and the % agreement for a score ≥ 2 (i.e. the number of cases all reviewers agreed on giving a score of 2 or 3). Similarly, agreements for the binary questions are indicated. For each observer question the κ-values, p-value (p), odds ratio (OR) and 95% confidence intervals are given, when applicable. Odds ratio represents the improvement of classification of 1 to ≥ 2 with MAR.

	Without MAR				With MAR
	Overall agreement (%)	Score 1 agreement (%)	Score ≥ 2 agreement (%)	κ	Overall agreement (%)	Score 1 agreement (%)	Score ≥ 2 agreement (%)	κ
Stent Visibility (p < 0.05, OR = 7.8, CI = 1.6 – 38.8)	77	56	12	0.66	76	24	40	0.64
Vessel Visibility (p < 0.05 OR = 8.7 CI = 1.7 – 45.2)	76	52	12	0.64	72	20	40	0.58
Relationship (p < 0.05 OR = 9.0 CI 1.7 – 47.0)	81	60	12	0.72	70	20	36	0.56
	Overall agreement (%)	Yes agreement (%)	No agreement (%)	κ	Overall agreement (%)	Yes agreement (%)	No agreement (%)	κ
obscuring beyond coil mass? (p < 0.0001 OR = 224.0 CI = 12.8 – 3926.0)	73	56	4	0.47	78	4	64	0.57
	Overall agreement (%)	Without MAR agreement(%)			With MAR agreement(%)			κ
Overall best visibility	94	0			92			0.89