Table des matières
Comment reconnaître séquence flair?
Les pathologies de la substance blanche (ramollissements, processus de démyélinisation, etc.) apparaissent hyperintenses. Lorsqu’une pathologie apparaît dans l’espace sous-arachnoïdien, les sillons deviennent hyperintenses en FLAIR.
Comment reconnaître T2 *?
Les séquences T2* sont sensibles à la présence de produits sanguins et de calcifications en raison des propriétés de susceptibilité de ces matériaux. La présence de ces éléments entraîne une perte de signal et ceux-ci sont détectés par la présence de vide de signal.
What is increased T2 signal?
The effect of increased T2 signal intensity in the spinal cord on the injury severity and early neurological recovery in patients with central cord syndrome. Patients with an increased T2 signal intensity are likely to have a more severe initial neurological deficit but will have relatively minimal early neurological deterioration.
What is foci of T2 hyperintensity?
BACKGROUND: T2-hyperintense foci are one of the most frequent findings in cerebral magnetic resonance imaging (MRI). They can pose serious diagnostic problems which is reflected by their English name and abbreviation – UBOs (Unidentified Bright Objects).
What is Flair signal hyperintensity?
Answer. Hyperintensity on a T2 sequence MRI basically means that the brain tissue in that particular spot differs from the rest of the brain. A bright spot, or hyperintensity, on T2 scan is nonspecific by itself and must be interpreted within clinical context (symptoms, why you had the MRI done in the first place, etc).
What is Flair signal abnormality?
White matter hyperintensities (WMHs) are signal abnormalities in the white matter of the brain found on T2-weighted , fluid-attenuated inversion recovery (FLAIR), and proton density magnetic resonance imaging (MRI) sequences. They are usually seen in older people and considered part of the spectrum of brain injury due to cerebrovascular diseases.