The Relative Localizing Value of Interictal and Immediate Postictal SPECT in Seizures of Temporal Lobe Origin

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FIGURE 1.
Pattern 1: Focal interictal hypoperfusion (left) and immediate postictal hyperperfusion in same temporal lobe.
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FIGURE 2.
Pattern 2: Symmetric bilateral interictal hypoperfusion and asymmetric unilateral (right) immediate postictal hyperperfusion.
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FIGURE 3.
Pattern 3: Bilateral interictal hypoperfusion and unilateral (right) immediate postictal accentuation of hypoperfusion in temporal lobe.

TABLE 1

SPECT Findings

SPECT finding	Total (n)	Ipsilateral to EEG focus*	Contralateral to EEG focus*
IISPECT
Hypoperfusion	36	32 (88.9)	4 (11.1)
Hyperperfusion	0	0	0
PISPECT
Hyperperfusion	19	18 (94.7)	1 (5.3)
Hypoperfusion	10	9 (90)	1 (10)