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Single Photon Emission Computed Tomography (SPECT) in a Patient with Bilateral Temporal Seizures: Correlation Between Ictal EEG and Postictal/Ictal SPECT
Author(s) -
Setoain F. J.,
Arroyo S.,
Lomeñia F.,
Pavía J.,
Martinez I.,
Fuster D.,
Herranz R.,
Setoain J.
Publication year - 1998
Publication title -
epilepsia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.687
H-Index - 191
eISSN - 1528-1167
pISSN - 0013-9580
DOI - 10.1111/j.1528-1157.1998.tb01451.x
Subject(s) - ictal , temporal lobe , ictal interictal spect analysis by spm , single photon emission computed tomography , emission computed tomography , epilepsy , nuclear medicine , electroencephalography , perfusion , medicine , positron emission tomography , psychology , radiology , neuroscience
Summary: We report a patient with bilateral independent temporal lobe seizures in whom two [ 99m Tc]HMPAO single photon emission computed tomograph (SPECT) scans were performed during two different seizures. In the first perüctal SPECT, [ 99m Tc]HMPAO was injected in the interval between two closely spaced seizures (one localized in the left temporal lobe and the other in the right temporal lobe). SPECT images showed hypoperfusion in the left lateral temporal lobe, hyper‐perfusion of the left mesial temporal region, and pronounced hyperperfusion in the right anterior temporal lobe. These results suggest both a postictal left temporal SPECT pattern and an ictal right temporal pattern. In the second periictal SPECT, [ 99m Tc]HMPA was injected immediately after a right temporal lobe seizure and showed right lateral temporal lobe hypoperfusion and right mesial hyperperfusion, suggesting a postictal right temporal SPECT pattern. Interpretation of the periictal SPECT should take into account EEG changes at the time or in the minutes immediately after injection of [ 99m Tc] HMPAO.