What does hyperintense on T2 mean?

What does hyperintense on T2 mean?

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.

What causes T2 hyperintense lesions?

Hyperintense spinal cord signal on T2-weighted images is seen in a wide-ranging variety of spinal cord processes. Causes including simple MR artefacts, trauma, primary and secondary tumours, radiation myelitis and diastematomyelia were discussed in Part A.

What is a T2 hypointense lesion?

T2 heterogeneous hypointense or mixed signal solid lesions have intermediate signal or T2 inhomogeneous signal with a mixture of T2 low and bright signal (higher than that of the outer myometrium or skeletal muscle). These may represent either benign or malignant lesions, either primary or secondary 3, 8.

What is a hyperintense lesion?

White matter hyperintensities are lesions in the brain that can be detected by T2-weighted MRI on which these lesions show up with increased brightness.

What is a T2 hyperintense mass?

The T2 signal was classified by comparing the signal intensity of the mass to the normal axillary lymph nodes. A mass that was as hyperintense as the lymph nodes was considered T2 hyperintense, and borderline cases were resolved by consensus discussion among the readers.

What are hyperintense lesions?

What causes hyperintensities on MRI?

Indeed, age and hypertension are the main predictors of white matter hyperintensities,69 70 and other vascular risk factors such as smoking, diabetes, and history of vascular disease were also shown to be associated with lesions in white matter.

What T2 means in MRI?

transverse relaxation time
T2 (transverse relaxation time) is the time constant which determines the rate at which excited protons reach equilibrium or go out of phase with each other. It is a measure of the time taken for spinning protons to lose phase coherence among the nuclei spinning perpendicular to the main field.

What is the difference between a lesion and a mass?

A bone lesion is considered a bone tumor if the abnormal area has cells that divide and multiply at higher-than-normal rates to create a mass in the bone. The term “tumor” does not indicate whether an abnormal growth is malignant (cancerous) or benign, as both benign and malignant lesions can form tumors in the bone.

What are T2 hyperintense white matter lesions?

White matter hyperintensities (WMHs) are lesions in the brain that show up as areas of increased brightness when visualised by T2-weighted magnetic resonance imaging (MRI). WMH’s are also referred to as Leukoaraiosis and are often found in CT or MRI’s of older patients.

What is a hyperintense mass?

If a T2-hyperintense mass has a thin rim of peripheral enhancement and no internal enhancement, it is a truly cystic (ie, fluid-filled) lesion. Ganglia are very common and should be considered whenever a periarticular mass with these characteristics is identified at MR imaging (Fig 1).

What is a lesion on the leg?

Bone lesions are areas of bone that are changed or damaged. Causes of bone lesions include infections, fractures, or tumors. When cells within the bone start to divide uncontrollably, they are sometimes called bone tumors. Most bone lesions are benign, meaning they are not cancerous.