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 ?
MRI imaging signs of "keyhole," "teardrop," or "noose" will demonstrate increased signal intensity at the end of a radial fold on the silicone sensitive sequences and will be outlined by the invaginated implant shell.
The figures of merit explored for the two dyes include signal intensity at a single concentration, S/N at a single concentration, on-spot background, slope of the dose-response curve (sensitivity), and LOD (see Table 1).
The MRI T2 signal intensity of the baseline (rest) gluteus maximus compared with the signal intensity after exercise demonstrated a statistically significant difference (p < 0.
1992) used a scale from 0 to 5 (0 = normal, 5 = very severe signal intensity increase) to grade the increase in intensity of the signal after eccentric exercise.
Variations of LIBS signal intensity of 20 ppm Mg in water in the jet mode and the mist mode using the Meinhard Nebulizer is shown in Figure 4.
The authors found that percentage of total high signal intensity and total CSF volumes could independently predict the rate of cognitive decline and suggested that cognitive change could be predicted by simple clinical and MRI measures.
Magnetic resonance imaging (MRI) of the brain showed bilateral frontoparietal high signal intensity on T2-weighted images and evidence of subtle fight posterior thalamic hyperintensity with no corresponding abnormalities in T1-weighted images.
On the T1-weighted image, the mass was of similar signal intensity to the adjacent muscles with an area of decreased signal intensity centrally and an area of slightly increased signal intensity peripherally.
In other investigations on pigs, he adds, the group is also seeing "promising, preliminary results" indicating that signal intensity directly reflects oxygen concentration.
Normal pericardium shows low signal intensity on all pulse sequences.