Institute of Biophysics and Biomedical Engineering, Faculty of Sciences of the University of Lisbon, Lisboa, Portugal Epilepsy is one of the most important chronic neurological disorders worldwide affecting more than 50 million people of all ages. Among these, almost 20% of epilepsy cases are uncontrollable and have an unknown source of this abnormal electrical activity. Present techniques for ...

than 40 or less than -40 was defined as left or right hemisphere language dominancy, respectively. Otherwise, language dominancy was not determined (ambiguous). The relationship between the side of epileptogenic focus and language-dominant hemisphere was investigated.Results: Language dominancy was identified in the left hemisphere in 75% (9/12) of the cases with right hemisphere epilepsy, in 5...

In pediatric drug-resistant epilepsy, nuclear medicine can provide important additional information in the presurgical localization of the epileptogenic focus. The main modalities used are interictal (18)F-fluorodeoxyglucose positron emission tomography (FDG-PET) and ictal regional cerebral perfusion study with single-photon emission computed tomography (SPECT). Nuclear medicine techniques have...

Pachygyria or incomplete lissencephaly is a developmental condition due to abnormal migration of neurons. The association of seizures in this condition warrants investigation like electroencephalogram (EEG) and magnetic resonance imaging (MRI). 18F-flurodeoxyglucose positron emission topography computed topography (18F-FDG PET/CT) has a potential role in commenting of wide...

INTRODUCTION Temporal lobe epilepsy is associated to many disorders localized to the neocortex, the hippocampal formation or both (dual pathology). The most common pathologies are mesial sclerosis, tumours, malformations and scars. However, these alterations are not intrinsically epileptogenic, as they are also seen in patients who do not develop epilepsy. Thus, the cortical tissue in the damag...