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Fluid-attenuated inversion recovery (FLAIR) is a magnetic resonance imaging 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. [ 1 ]
In diffusion weighted imaging (DWI), the intensity of each image element reflects the best estimate of the rate of water diffusion at that location.Because the mobility of water is driven by thermal agitation and highly dependent on its cellular environment, the hypothesis behind DWI is that findings may indicate (early) pathologic change.
Another possible explanation is that there is an increase in local venous blood volume. In either case, this image suggests that the tissue associated with this vascular territory could be tissue at risk. Future stroke research will involve comparisons of perfusion weighted imaging and SWI to learn more about local flow and oxygen saturation.
Coupled with imaging of cerebral perfusion, researchers can highlight regions of "perfusion/diffusion mismatch" that may indicate regions capable of salvage by reperfusion therapy. Like many other specialized applications, this technique is usually coupled with a fast image acquisition sequence, such as echo planar imaging sequence.
MRI scans showing hyperintensities. A hyperintensity or T2 hyperintensity is an area of high intensity on types of magnetic resonance imaging (MRI) scans of the brain of a human or of another mammal that reflect lesions produced largely by demyelination and axonal loss.
Judge allows plaintiff's false arrest case to go to trial, and also finds substantially true' his claims that one Newton officer had abused girlfriend Judge finds Newton officers lacked cause for ...
Ultimately, his DWI case was dismissed without prejudice by the Bernalillo County District Attorney's Office on Jan. 18, along with more than 150 other pending DWI cases involving Alba, Johnson Jr ...
A DWI, in vehicular crime, is a charge of driving whilst intoxicated (by alcohol) or impaired (by drugs). Dwi or DWI may also refer to: Dwi-, a prefix once used for undiscovered chemical elements; Diffusion-weighted imaging, in magnetic resonance imaging; Drinking Water Inspectorate, England and Wales