Artifacts with FBP, LIMAR, and IMAR according to rating^{^a}

Rating^{^b}	FBP	LIMAR	IMAR
1	174	140	31
2	150	211	47
3	61	78	100
4	71	22	135
5	0	4	142

↵a Values shown are the number of sections with artifacts.
↵b A rating of 1 indicates severe artifacts, largely not diagnostic; 2, poor image quality, partly nondiagnostic; 3, moderate image quality, limited diagnostic confidence; 4, good image quality, sufficient for diagnosis; and 5, excellent image quality, no artifacts.