**3. Performed Experiments and Results**

The experiments were carried out on the open-air, low-field (up to 0.2 T) MRI system E-scan Opera manufactured by the company Esaote S.p.A., Genoa, Italy [6]. This MRI system is located at the Institute of Measurement Science (IMS) in Bratislava, in the laboratory of the department of imaging methods. The piezoelectric vibration sensor was located in the scanning area of the MRI device; the microphone and the sound level meter were placed in its vicinity. The time course of the output voltage signals of the vibration sensor and the microphone was recorded, together with the measured noise SPL. The stored data were further processed to analyze the vibration and noise conditions by the energetic signal properties.
