Statistical voxel-wise analysis of ictal SPECT reveals pattern of abnormal perfusion in patients with temporal lobe epilepsy

Author:

Amorim Bárbara Juarez1,Etchebehere Elba Cristina Sá de Camargo1,Camargo Edwaldo Eduardo1,Rio Pablo Augusto1,Bonilha Leonardo2,Rorden Chris2,Li Li Min1,Cendes Fernando1

Affiliation:

1. UNICAMP

2. University of Nottingham, United Kingdom

Abstract

OBJECTIVE: To investigate the pattern of perfusion abnormalities in ictal and interictal brain perfusion SPECT images (BSI) from patients with temporal lobe epilepsy (TLE). METHOD: It was acquired interictal and ictal BSI from 24 patients with refractory TLE. BSIs were analyzed by visual inspection and statistical parametric mapping (SPM2). Statistical analysis compared the patients group to a control group of 50 volunteers. The images from patients with left-TLE were left-right flipped. RESULTS: It was not observed significant perfusional differences in interictal scans with SPM. Ictal BSI in SPM analysis revealed hyperperfusion within ipsilateral temporal lobe (epileptogenic focus) and also contralateral parieto-occipital region, ipsilateral posterior cingulate gyrus, occipital lobes and ipsilateral basal ganglia. Ictal BSI also showed areas of hypoperfusion. CONCLUSION: In a group analysis of ictal BSI of patients with TLE, voxel-wise analysis detects a network of distant regions of perfusional alteration which may play active role in seizure genesis and propagation.

Publisher

FapUNIFESP (SciELO)

Subject

Neurology,Clinical Neurology

Reference24 articles.

1. Incidence and prevalence studies in epilepsy and their methodological problems: a review;Sander JWA;J Neurol Neurosurg Psychiatry,1987

2. Temporal lobe volumetric cell densities in temporal lobe epilepsy;Babb TL;Epilepsia,1984

3. SPECT brain imaging in epilepsy: a meta-analysis;Devous MD;J Nucl Med,1998

4. Parametric mapping of cerebral blood flow deficits in Alzheimer’s disease: a SPECT study using HMPAO and image standardization technique;Imran MB;J Nucl Med,1999

5. Regional specific changes of cerebral metabolism in systemic lupus erythematosus identified by positron emission tomography;Jong BM;Eur Neurol,1999

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