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Table 2: Brain MR imaging features at presentation for serum antibody-positive MOGAD
Brain Involvement n = 44 n = 44
Supratentorial 41/44 (93.2) Margins^a 
Cortex 9/44 (20.5)  Well-defined 3/42 (7.1)
Deep gray^b 26/44 (59.1)  Ill-defined 32/42 (76.2)
 Caudate 9/44 (20.5)  Mixed 7/42 (16.7)
 Putamen 9/44 (20.5) Confluence^a 
 Globus pallidus 6/44 (13.6)  Discrete 16/42 (38.1)
 Thalamus 21/44 (47.7)  Beginning confluence 18/42 (42.9)
White matter^b  Confluent 8/42 (19)
 Frontal lobe 31/44 (70.5)  Mass effect 19/44 (43.2)
 Parietal lobe 28/44 (63.6) Enhancement^b 
 Temporal lobe 22/44 (50)  Solid/nodular 17/44 (38.6)
 Occipital lobe 19/44 (43.2)  Peripheral ring 0
 Insula 21/44 (47.7)  Incomplete ring 1/44 (2.3)
White matter^b  Ill-defined 9/44 (20.5)
 Subcortical 33/44 (75)  Linear 10/44 (22.7)
 Deep 17/44 (38.6)  Leptomeningeal 4/44 (9.1)
 Periventricular 14/44 (31.8)  Cortical 0/44
 Internal capsule 9/44 (20.5)  None 17/44 (2.3)
 Corpus callosum 8/44 (18.2)  >1 enhancement characteristic 10/44 (22.7)
Infratentorial^b 31/44 (70.5) Low diffusivity^c 2/43 (4.7)
 Midbrain 15/44 (34.1) Susceptibility^d 0/36
 Pons 21/44 (47.7) 
 Medulla 9/44 (20.5) 
 Brachium pontis 12/44 (27.3) 
 Cerebellum 15/44 (34.1) 
 Other 5/44 (11.4) 
^aNot applicable in 2 cases of cortical only involvement.
^bPercentages do not add up to 100% as many cases had multiple combinations of features.
^cUnknown in 1 patient due to lack of DWI sequence.
^dUnknown in 8 patients due to lack of SWI/gradient echo sequence.