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Introduction. Magnetic Resonance Imaging (MRI) has modified the practice of radiology. MRI is base on safe interaction between radiowaves at a particular frequency and hydrogen nuclei in the body. Metabolic encephalophaties are by definition those disorder of the central nervous system that are not due primarily to structural abnormalities.

Aim. Here we present the 1H MRI and functional MRI (fMRI) method applied to diagnosis of disorders of the central nervous system. Material and methods. Analysis of literature and self-research.

Results.We have discussed the major MRI applications in the characteristic of the central nervous system. The relationship beteen the motion of flowing blood and the representation of the blood on images is complex. This work is an introduction to the basic ideas and techniques of fMRI. Therefore, both, 1H MRI and functional MRI, methods are ued in neuroscience.

Conclusion. Nonivasive MRI and functional MRI are daily diagnostics methods in neurology.