Detection of mechanical vibrations by magnetic resonance: elastomagnetic resonance spectroscopy (EMRS)

C. J. Lewa; N. Baril; J. M. Franconi; J. D. de Certaines; Paul Canioni; Eric Thiaudiere

doi:10.1117/12.447611

6 November 2001 Detection of mechanical vibrations by magnetic resonance: elastomagnetic resonance spectroscopy (EMRS)

C. J. Lewa, N. Baril, J. M. Franconi, J. D. de Certaines, Paul Canioni, Eric Thiaudiere

Proceedings Volume 4514, Acousto-Optics and Applications IV; (2001) https://doi.org/10.1117/12.447611
Event: Acousto-Optics and Applications IV, 2001, Gdansk-Jurata, Poland

Abstract

The previously tested MRI methods quantitative measurement of mechanical properties required a synchronization between MRI acquisition pulses and mechanical stimulation. Two new unsynchronized methods: (1) with B_o static field gradient G_o and (2) with a B₁ radio-frequency field gradient G₁ are proposed. The methods are usable without any a- priori knowledge of the intensity, direction and frequency of the mechanical waves. A specifically modified SPAMM sequence has been used, operating on a 0.2 T MRI system. The proposed methods are sufficient fast (acquisition time less than 5 seconds) for a routine clinical use.

Citation Download Citation

C. J. Lewa, N. Baril, J. M. Franconi, J. D. de Certaines, Paul Canioni, and Eric Thiaudiere "Detection of mechanical vibrations by magnetic resonance: elastomagnetic resonance spectroscopy (EMRS)", Proc. SPIE 4514, Acousto-Optics and Applications IV, (6 November 2001); https://doi.org/10.1117/12.447611

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