inhomogeneity

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inhomogeneity

An MRI term for the lack of homogeneity or uniformity in a main magnetic field.
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References in periodicals archive ?
In addition, condition (40) that sizes of inhomogeneities exceed the trajectory variations should be fulfilled (see also [1]).
The second reason is that by Markov point processes with strong negative interactions (e.g., hardcore interaction) it is clearly visible that different types of inhomogeneities produce point patterns with very different geometrical structure.
However, this could be due to two possible reasons: (a) Convergent flows in the die result in inhomogeneities within the melt.
Due to the fact that the characteristic drift of a thermocouple is always connected with inhomogeneities and that the temperature profile alongside the thermocouple found in the calibration device is not the same as in the application, these calibration results can be misleading.
The discussed method was adjusted to detection of inhomogeneities in levees.
Tleukenov, "A method for solving some problems of elastic wave propagation in the presence of periodic inhomogeneities," in Mathematical Questions of Theory of Wave Propagation.
These simulated brain images are of T1-weighted contrast with a 1mm slice thickness, 15% Rician noise, and no intensity inhomogeneities. The noisy MR images are segmented into four classifications: CSF, WM, GM, and the background.
As follows from all our past results, the fine structure of the spectrum of amplitude fluctuations (the shape of the corresponding histograms) is determined by the motion (orientation) of the object studied (the laboratory) in relation to spatial inhomogeneities [2].
Chapters cover the basic radiobiology of continuous irradiation, therapeutic gain models for continuous irradiation, permanent seed implants, properties of small-volume tumors and subclinical disease, dose and dose-volume inhomogeneities, tissue architecture and its effect on normal tissue and tumor response to irradiation, and three-dimensional volume effects.
It is significant that the highest emission levels were registered when large blocks of rock situated close to each other and other landslide layer inhomogeneities occurred in the landslide's body.
One such effect is a potential Stern-Gerlach steering of the neutrons in the vertical direction, arising from inhomogeneities in the vertical 10 G guide field.
However, Eq 6 does not consider interaction effects between the matrix and a non-dilute volume fraction of inhomogeneities. So in order to expand this approach to non-dilute volume fractions, Mori and Tanaka [11] assumed that the average strain, [[[epsilon].sup.(2)].sub.ij], in the interacting inhomogeneities can be approximated by that of a single inhomogeneity embedded in an infinite matrix subjected to the uniform average matrix strain, [[[epsilon].sup.(1)].sub.ij].