signal intensity


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signal intensity

The relative brilliance of a radiographic image, radioactive tracer, or biological marker.
See also: intensity
References in periodicals archive ?
On T1-weighted images, the tumour is almost impossible to detect because of homogenous medium signal intensity with difficulty discerning the zonal anatomy.
Because inflammatory tissues usually have high signal intensity at diffusion-weighted imaging, it may be a promising sequence for diagnosis of anal fistulas, particularly as an adjunct to T2-weighted imaging in patients with risk factors having to do with adverse effects of contrast material: previous allergic reactions or impaired renal function with concern about development of nephrogenic systemic fibrosis.
On MRI the characteristic appearances are multiple frond-like synovial proliferation of fat signal intensity and suppression of signal with fat selective presaturation.
Heterogeneous appearance of liver, periportal involvement, diffuse low signal intensity of spleen on T2-weighted images and thickened bowel wall can be helpful if accompanied by history of chronic inflammatory disease and clinical suspicion for amyloidosis.
On MR images, the normal TFC (the articular disk) showed low signal intensity in all the sequences including T1-weighted image and PD-FS.
The total signal intensity in the sapwood did not significantly change in the early stages of drying.
On MRI, popliteal cyst commonly presents as an ellipsoid mass with uniform low signal intensity on T1-weighted images and high signal intensity on T2-weighted images [2].
However, the presence of high protein content, mucinous materials, or internal hemorrhage may lead to high T1 signal intensity [4, 10, 11].
Patent large flowing vessels display decreased signal intensity on both T1 and T2 weighted images, whereas a totally thrombosed vein has an increased signal intensity on both weighted images.
UF location, T2WI signal intensity, average radial line length and ablative response were subjected to univariate F test.
A 5-LED signal intensity indicator and audible alarm locates the exact source of the problem.