Table 5.

Error detection rate by the QA tool and reviewers, categorized into the different error types

	QA tool		Reviewers – first session w/o QA tool		Reviewers – second session w/QA tool
	Minor errors	Major errors	Minor errors	Major errors	Minor errors	Major errors
Boundary in transverse plane	10/27	8/11	50/81	32/33	56/81	30/33
Slice extent	0/7	3/5	14/21	13/15	15/21	14/15
Ditzel	2/2	‐	4/6	‐	2/6	‐
Extra segment	‐	4/4	‐	12/12	‐	12/12
Missing slice	2/2	7/7	2/6	14/21	6/6	15/21
Mislabel	‐	7/7	‐	9/21	‐	17/21