inhomogeneity


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inhomogeneity

An MRI term for the lack of homogeneity or uniformity in a main magnetic field.
References in periodicals archive ?
The microscale inhomogeneity was the mean of the photon count rate (MCR) of PAN solutions in DLS.
Gamma correction will not bring the discontinuity of the plaque, which does not need to consider the problem of gray inhomogeneity. The image pixel value is corrected to show some advantages in image enhancement [29].
Table 6 presents how the groups of the European countries chosen for the study were divided based on: classifying them to appropriate typological classes and spatial homogeneity (inhomogeneity) in the area analyzed.
Previous investigators have insisted that multipoint Dixon techniques show more uniform fat suppression than other conventional techniques (e.g., CHESS, STIR) in the presence of field inhomogeneity (3, 8, 12, 13).
Studies have also shown that in structures characterized by high inhomogeneity of the field, the average magnetic field strength H may be low.
proposed the LBF active contour model to overcome the poor image segmentation with noise and intensity inhomogeneity [13].
We use the original images of the two different databases, i.e., private dataset and BUSIS dataset, and conduct intensity inhomogeneity correction for the original images.
However, the degree of inhomogeneity between different local regions is usually inconsistent; that is to say, the nonlinear phenomenon of inhomogeneity is very common.
As the seepage velocity increases, the frozen area shrinks, the temperature in the hole area rises and inhomogeneity increases.
where [X.sub.j](t) is the candidate series, [mu](t) is the unknown climate change signal (temporal trend), [E.sub.j] is the spatial expected values (spatial trend), I[H.sub.j] (t) is the inhomogeneity signals, and [[epsilon].sub.j] (t) is the normal white noise series.
Here m(x, t) represents the inhomogeneity of the system.
8, a) left hand side there is seen the structural inhomogeneity, having complicated contour (area [approximately equal to] 5 [mm.sup.2]) and formed during material's manufacturing process.