Figure 1.

Cranial magnetic resonance imaging of patients. (A) Patient P1: Multiple abnormal bilateral signals in the brain. Both old and new lesions coexist. Demyelinating lesions may be present. (B) Patient P2: Sparse abnormal bilateral signals in the brain parenchyma, suggestive of inflammatory lesions. (C) Patient P3: Abnormal signals in the brain and cerebellum, particularly in the bilateral basal ganglia and the left frontal lobe, suggestive of infective lesions. (D) Patient P15: Abnormal, bilateral symmetrical signals in the white matter, brain atrophy, and similar signals in the thalamus.