Effect of Examined Persons Weight on the Acoustic Noise Produced by an Open-air NMR Imager
Jiří Přibil, Tomáš Dermek, Ivan Frollo · 2015
The paper analyzes how influenced the weight of lying examined person in the scanning area of the open-air magnetic resonance imaging equipment on properties of an acoustic noise produced by mechanical vibration of the gradient coils system. This noise signal exhibits harmonic character, so it is suitable to analyze its properties in the spectral domain. Obtained results of will be used for precision of noise reduction of recorded speech signal during phonation for the human vocal tract modeling in an NMR imager.