Hi Martin,

Thanks for your response. In this case gradient 42 was a baseline volume (and I would have expected it to be listed with the other baseline volumes "Baselines_indices" in the list ). However, it also seems to happen for gradients, i.e. not baseline volumes. I attached another file, in which gradient 87 is not in the list of included gradients and not listed among the artifacts (and it is not a baseline volume).

Best, 
Karen