* Due to data inconsistencies experiments had to be repeated with a
reduced number of annotators (17 in version 1). All findings of the previous
version were reproducible. 7 pages, 2 figures, accepted at BVM workshop 2021 Access Paper or Ask Questions
* This paper was originally published at the 6th International
Conference on Image Formation in X-Ray Computed Tomography (CTmeeting 2020) Access Paper or Ask Questions