[¹⁸F]-Fluoro-Deoxy-Glucose Positron Emission Tomography Scan Should Be Obtained Early in Cases of Autoimmune Encephalitis

Table 2

Structural and physiological workup.

Patient	Days from onset to first image	First image modality	Days from onset to first positive image finding	First positive image modality	Days from onset to first EEG	Days from onset to first positive EEG findings	EEG finding
1	4	CT	NA	NA	159	NA	Normal
2	46	MRI	109	PET	46	81	Vertex seizure
3	73	MRI	120	PET	83	180	Periodic pattern
4	184	MRI	184	MRI	183	183	Nonlocalizable status
5	10	MRI	18	MRI	53	NA	Generalized slowing
6	14	CT	16	MRI	22	22	Right frontotemporal seizure
7	9	CT	33	PET	14	18	Bifrontal seizure
Average	48.6		80.0		80.0	96.8

EEG, electroencephalogram; CT, computed tomography; PET, positron emission tomography; NA, not applicable.