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Fig 1. Axial MR images of an HHV-6 encephalopathy patient (patient 2) obtained on the second day after the onset of neurologic symptoms.
A, T1WI (TR/TE = 466/11 ms).
B, T2WI (2650/93 ms).
C, FLAIR (TR/TE/TI = 9000/97/2300 ms).
D, DWI (TR/TE = 3100/119 ms, b = 1000).
E, ADC map.
F, postcontrast T1WI (TR/TE = 558/17 ms).
An abnormal low signal intensity on T1WI (A) and high signal intensity on T2WI (B) and FLAIR (C) are shown in the bilateral amygdalae and hippocampi. High signal intensity on DWI (D) with ADC reduction (E) is also shown. However, no abnormal enhancement is seen on postcontrast T1WI (F).
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