摘要:
A method for determination of the images of electron relaxation times, T 1 , in EPR tomography consists in the resultant relaxation time, T 1 , established from the ratio of amplitudes of signals recorded for various scanning directions is found, whereupon a variability function of the resultant relaxation time, T 1 , is found for at least two different scan frequencies, whereupon projections for the respective relaxation times are established for every point of the recorded spectra by matching functions specific for the respective relaxation times to the resultant function of variability of relaxation time, and then images are reconstructed in 1D or in 2D or in 3D depend of the experimental conditions.
摘要:
The present invention relates to a method to generate magnetic fields of high uniformity within the object examined and compensation of external dispersed field, and a system for its embodiment, which method is applicable in magnetic resonance tomography. The method to generate magnetic fields of high uniformity within the object examined in which two pairs of coils (1) and (2) are used in which the current flows in the same direction and sense. The system is composed of two pairs of coils (1) and (2), which, preferably, have the same radiuses, are situated coaxially, are attached to the housing of the tomograph in a permanent, detachable manner, and in which the current flows in the same direction and sense.