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TABLE 2: Distribution and number of lesions detected at serial MR studies in patient 1
Clinical Course and MR Study Cerebral White Matter Cerebral Cortex Corpus Callosum Basal Ganglia Cerebellar Hemisphere Cerebellar Peduncle
2 wk after onset 
 T2WI 18 0 22 5 4 8
 FLAIR 22 15 20 5 2 4
 DWI 2 0 11 3 3 0
8 wk, relapse of symptoms 
 T2WI 28 0 14 4 0 6
 FLAIR 31 37 15 5 0 1
 DWI 4 32 9 1 0 0
10 wk, relapse of symptoms 
 T2WI^* 13 0 16 20 4 1
 FLAIR 32 6 17 23 11 1
 DWI 0 0 5 1 0 0
8 mo, stable condition 
 T2WI 4 0 7 3 0 1
 FLAIR 2 0 3 3 0 1
 DWI 0 0 0 0 0 0
Note.—T2WI indicates T2-weighted imaging.
* Some small lesions could not be identified because of motion artifact.

Clinical Course and MR Study	Cerebral White Matter	Cerebral Cortex	Corpus Callosum	Basal Ganglia	Cerebellar Hemisphere	Cerebellar Peduncle
2 wk after onset
T2WI	18	0	22	5	4	8
FLAIR	22	15	20	5	2	4
DWI	2	0	11	3	3	0
8 wk, relapse of symptoms
T2WI	28	0	14	4	0	6
FLAIR	31	37	15	5	0	1
DWI	4	32	9	1	0	0
10 wk, relapse of symptoms
T2WI^*	13	0	16	20	4	1
FLAIR	32	6	17	23	11	1
DWI	0	0	5	1	0	0
8 mo, stable condition
T2WI	4	0	7	3	0	1
FLAIR	2	0	3	3	0	1
DWI	0	0	0	0	0	0