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Abstract #1436

Characterization of health and technological risks posed by the quench of a human high-field Magnetic Resonance system

Nicola Pace1, Leonardo Ricci2, Mario Scotoni2, Alessio Perinelli2, and Jorge Jovicich1

1CIMeC, University of Trento, Trento, Italy, 2Dept of Physics, University of Trento, Trento, Italy

The programmed quench of a human 4T MR scanner was used to measure dB/dt inside the bore to evaluate cardiac stimulation risks during a quench. Additionally, we measured the exit temperature of the helium gas, to evaluate potential implications in quench pipe design. The maximum dB/dt was 360 mTs−1 at the center of the magnet, far below the cardiac stimulation threshold (20 Ts−1). Helium exit temperature reached 35°K, perhaps implying further considerations about quench pipe design and building. Replication of similar experiments on programmed quenches, specially in high-field MRI systems, will be useful to further characterize quench risks.

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