What is a foci on the brain?

What is a foci on the brain?

T2-hyperintense foci are one of the most frequent find- ings in cerebral magnetic resonance imaging (MRI). Most frequently these lesions involve white matter, although they can be present in gray matter as well. In some cases they are incidental findings and can pose serious diagnostic problems.

What does high signal intensity on MRI mean?

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 causes white matter in frontal lobe of brain?

High blood pressure, atherosclerosis, inflammation and other basic disease processes may travel the brain on a superhighway of white matter, causing some of neurology’s most mysterious and troubling disorders.

What causes foci in the brain?

What Causes Brain Lesions? Brain lesions can be caused by injury, infection, exposure to certain chemicals, problems with the immune system, and more. Typically, their cause is unknown.

What does foci mean in medical terms?

Foci are cells located in a specific organ of the body that are notably different from the surrounding cells. These differences are caused by mutation or other types of cellular damage, and they’re generally the first sign of a developing lesion, tumor or other disease.

What can white spots on brain MRI mean?

Small strokes—the most common cause of white spots on a brain MRI—are often caused by blockages of small blood vessels due to high blood pressure and/or diabetes, while large strokes are usually caused by heart disease or carotid artery disease.

What is meant by foci of ellipse?

i.e, the locus of points whose distances from a fixed point and straight line are in constant ratio ‘e’ which is less than 1, is called an ellipse. The fixed point and fixed straight line are called focus and directrix respectively. An ellipse has two points which are the focus of the ellipse.