Automatic Detection of Slow Conducting Channels during Substrate Ablation of Scar-Related Ventricular Arrhythmias

Table 2

Analysis of colour-coded maps. Number of SCC entrances identified per patient and agreement between mapping modalities.

	EAM standard	EAM screening	SCC-Map	Ce-CMR PSI maps	-value	-value^†	-value^‡
Entire population (n = 20)	1.05 ± 1.10	2.95 ± 2.31	3.45 ± 1.61	N/A	<0.01	<0.01	0.29
Ischemic (n = 10)	0.60 ± 1.00	2.20 ± 1.75	3.60 ± 1.43	3.70 ± 2.45	0.04	<0.01	0.10
ARVD/C (n = 10)	1.50 ± 1.08	3.70 ± 2.63	3.30 ± 1.83	N/A	0.03	0.02	0.87

Number of SCC entrances per patient are given as mean ± standard deviation. Differences between EAM standard and EAM screening. ^†Differences between EAM standard and SCC-Maps. ^‡Differences between EAM screening and SCC-Maps. ARVD/C: arrhythmogenic right ventricular dysplasia/cardiomyopathy; Ce-CMR: contrast-enhanced cardiac magnetic resonance; EAM: electroanatomical mapping; N/A: not applicable; PSI: pixel signal intensity; and SCC: slow conducting channel.