Single point imaging with suppressed sound pressure levels through gradient-shape adjustment

Journal of Magnetic Resonance
Peter LattaBoguslaw Tomanek

Abstract

Acoustic noise produced during single point imaging (SPI) experiments was modulated by changes in the spatial encoding gradients. Parameters of both linear and sine-shaped gradient ramps were modified to minimize the acoustic noise levels. Acoustic noise measurements during SPI were measured on three different gradient systems and revealed that for small gradient-bore systems a considerable acoustic noise reduction of more than 20 dB can easily be achieved. SPI in conjunction with an optimized gradient waveform can be a superb alternative to the previously introduced single point ramped imaging with T(1) enhancement (SPRITE) method when sound levels and overheating of gradients are a concern.

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Citations

Jul 7, 2007·Magnetic Resonance Imaging·Peter LattaBoguslaw Tomanek

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