Tumor-like MRS and PET findings in a case of radiation-induced brain necrosis, away from any tumor: an intringuing case report
Nguyen Khac, Minh-Tuan ; Hustinx, Roland ; Deprez, Manuel et al
Conference (2009, March 21)Detailed reference viewed: 35 (6 ULg)
Que mesure la neuro-imagerie fonctionnelle: IRMf, TEP & MEG?
Gosseries, Olivia ; Demertzi, Athina ; Noirhomme, Quentin et al
in Revue Médicale de Liège (2008), 63(5-6), 231-7
Functional cerebral imaging techniques allow the in vivo study of human cognitive and sensorimotor functions in physiological or pathological conditions. In this paper, we review the advantages and ... [more ▼]
Functional cerebral imaging techniques allow the in vivo study of human cognitive and sensorimotor functions in physiological or pathological conditions. In this paper, we review the advantages and limitations of functional magnetic resonance imaging (fMRI), positron emission tomography (PET) and magnetoencephalography (MEG). fMRI and PET measure haemodynamic changes induced by regional changes in neuronal activity. These techniques have a high spatial resolution (a few millimeters), but a poor temporal resolution (a few seconds to several minutes). Electroencephalogram (EEG) and MEG measure the neuronal electrical or magnetic activity with a high temporal resolution (i.e., milliseconds) albeit with a poorer spatial resolution (i.e., a few millimeters to one centimeter). The combination of these different neuroimaging techniques allows studying different components of the brain's activity (e.g., neurovascular coupling, electromagnetic activity) with both a high temporal and spatial resolution. [less ▲]Detailed reference viewed: 185 (19 ULg)