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Rheumatoid arthritis is a chronic polyarthritis of unknown etiology resulting in progressive destruction of bone and joint failure may be assessed by methods OMERACT group as RAMRIS, resulting tool advances in MRI. Objective: This study aimed to offer a new reading of magnetic resonance imaging in the diagnosis and monitoring of rheumatoid arthritis, describing results obtained by various authors using the criteria of OMERACT (Measurements of Results in Clinical Trials of Rheumatoid Arthritis) / RAMRIS (Rheumatoid Arthritis Counting System in Magnetic Resonance Imaging), suggesting it as a method of diagnosis and monitoring of disease. Materials and Methods: We used recent articles, publications in editorials and master's theses on the criterion of literature to which the present review is based. Articles from more distant dates for 5 years were also used by having indispensability for this study. Results: MRI proved to be the best method of diagnosis and monitoring of rheumatoid arthritis and applied the criteria of OMERACT group through RAMRIS. The RAMRIS is shown to be able to guide the best diagnostic evaluations and proof of therapeutic efficiency in the use of disease-modifying medicines. Conclusion: The method RAMRIS protocols can be played on most services, requiring radiologists trained on the criteria of OMERACT group to be introduced to their routines.