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Table 1 Percentage of ictal recordings in different studies and average recording times

From: Interictal and Ictal MEG in presurgical evaluation for epilepsy surgery

Authors Year Average recording time No. of patients with seizures during MEG recordings (i.e., ictal recordings) Total No. of patients recorded Percentage of ictal recordings
Stefan [15] 2003 30 min 31 455 7%
Assaf [18] 2003 120 min 14 57 24%
Alkawadri [19] 2018 51 min 44 377 12%
Medvedovsky [20] 2012 5.7 h 47 246 19%
Ramajunam [21] 2017 90 min 40 310 12.9%
Velmurugan [2] 2018 120 min 67 691 10%