Table 4.

Evaluation of contrast leak

3 T	Contrast leak	Major (M) or minor (m)	1.5 T	Contrast leak	Major (M) or minor (m)
1	1	m	1	2	m
2	3	m	2	3	M
3	0	N/A	3	0	N/A
4	3	M	4	0	N/A
5	3	M	5	0	N/A
6	3	m	6	0	N/A
7	3	M	7	2	m
8	3	m	8	2	m
9	3	m	9	0	N/A
10	3	M	10	3	m
11	3	m	11	1	m
			12	3	M
			13	0	N/A
	Contrast Leak:		14	2	m
	3: definite		15	3	m
	2: probable		16	3	m
	1: possible		17	3	M
	0: no leak		18	3	M

Major leak (M): contrast leakage outside joint capsule with signal intensity equal to that of injected contrast

Minor leak (m): contrast leakage with signal intensity less than injected contrast signal intensity