Purpose: to measure the sound pressure level emitted by the magnetic resonance equipment when working and check the hearing sensations described by individuals submitted to this exam after it has been carried out. Methods: the measurement of noise was conducted during image formation in this exam, by means of an environmental noise sound pressure level meter and the application of a questionnaire for the purpose of checking the hearing sensations presented by those individuals after the exam has been carried out. This procedure was applied to sixty individuals submitted to a magnetic resonance exam of the cranium. Results: it was found that the mean sound pressure level presented while the exam was carried out was lower than the level of intensity considered being a risk for hearing lesions. However sensations like buzzing, anxiety, full hearing and relief after the end of the exam were mentioned by the individuals after it had been carried out. Conclusion: the use of ear protectors is pertinent as a preventive measure for controlling the level of noise that affects the individual's cochlea, thus minimizing the physical and psycho-social effects resulting from exposure to the noise. Keywords: Noise; Magnetic Resonance Spectroscopy; Protective Devices; Hearing Loss; Hearing RESUMO Objetivo: mensurar o nível de pressão sonora emitido pelo aparelho de ressonância magnética em funcionamento e verificar as sensações auditivas descritas pelos indivíduos submetidos a este exame após a realização do mesmo. Métodos: foi realizada a mensuração do ruído produzido, durante a aquisição das imagens, por meio de um medidor de nível de pressão sonora (decibelímetro) e a aplicação de um questionário com a finalidade de verificar as sensações auditivas apresentadas por estes indivíduos após a realização do exame. Tal procedimento foi aplicado a 60 indivíduos submetidos ao exame de ressonância magnética do crânio. Resultados: o nível de pressão sonora média apresentada durante a realização do exame foi inferior ao nível de intensidade considerado como risco para lesões auditivas. No entanto, sensações como zumbido, ansiedade, plenitude auricular e alívio após o término do exame foram citados pelos indivíduos após a execução do mesmo. Conclusão: é pertinente o uso de protetores auriculares como medida preventiva para o controle do nível de ruído que atinge a cóclea do indivíduo, minimizando desta forma os efeitos físicos e psicossociais decorrentes da exposição ao ruído.
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