Abstract
The problems of registration of weak magnetic resonance (MR) signals in conditions of technogenic interference are considered. Their intensity and temporal activity are analyzed by MRI tomography. To reduce their influence on the result of long-term signal accumulation, it is proposed to save its individual realizations during registration. Then, at the end of registration, it is possible analyze them, identify noisy implementations, edit them, and submit edited copies for summing up instead of noisy ones. An approach that is similar in concept is considered for practical application in MRI – instead of increasing the number of accumulations, it is proposed to increase the number of phase encoding steps. Examples of analysis of interference activity during 23Na MRI scanning of various human organs using various coils are given. The possibility of increasing the information content of MRI data by using apodization for kspace data is shown, and this technique is most effective if the effect of noise occurs when only the peripheral part of this space is filled.
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