What is a T1 FLAIR?
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What is a T1 FLAIR?
T1-FLAIR stands for T1-weighted-Fluid-Attenuated Inversion Recovery. This nomenclature began to arise in the late 1990s to denote an inversion recovery sequence with dark CSF and other T1-like properties made possible by a medium TI coupled with fast spin-echo signal acquisition.
Is there a T1 FLAIR?
T1-weighted fluid-attenuated inversion recovery (T1FLAIR) is a relatively new pulse sequence and it provides higher tissue contrast between the gray matter (GM) and white matter (WM) of the brain than T1-weighted SE (T1SE) sequence.
Is FLAIR a T1 or T2?
FLAIR MRI is a heavily T2-weighted technique that dampens ventricular CSF signal. This causes the highest signals on the sequence are from certain brain parenchymal abnormalities, such as MS lesions, while the CSF appears black.
What does FLAIR on an MRI indicate?
Fluid-attenuated inversion recovery (FLAIR) is an MRI technique that shows areas of tissue T2 prolongation as bright while suppressing (darkening) cerebrospinal fluid (CSF) signal, thus clearly revealing lesions in proximity to CSF, such as cerebral cortical lesions.
What does FLAIR mean in a MRI?
Fluid-attenuated inversion recovery (FLAIR) is a magnetic resonance imaging (MRI) sequence that produces strong T2 weighting, suppresses the CSF signal, and minimizes contrast between gray matter and white matter.
What is T2 and FLAIR hyperintensities?
Focal hyperintensities in the subcortical white matter demonstrated by T2-weighted or FLAIR images are a common incidental finding in patients undergoing brain MRI for indications other than stroke. They are indicative of chronic microvascular disease.
What is MRI FLAIR for?
Fluid-attenuated inversion recovery (FLAIR) is an MRI sequence with an inversion recovery set to null fluids. For example, it can be used in brain imaging to suppress cerebrospinal fluid (CSF) effects on the image, so as to bring out the periventricular hyperintense lesions, such as multiple sclerosis (MS) plaques.
What does a flair mean on a brain MRI?
Fluid-attenuated inversion recovery (FLAIR) is an advanced magnetic resonance imaging sequence that reveals tissue T2 prolongation with cerebrospinal fluid suppression, allowing detection of superficial brain lesions.
