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Abstract #2621

Comparison of Laser Doppler Vibrometer and Accelerometer Measurements of MRI Gradient Field Induced Vibration in Conductive Materials

Christine M. Tarapacki1, Daniel J. Martire1, Colin M. McCurdy1, William Bradfield Handler1, and Blaine A. Chronik1

1Physics and Astronomy, Western University, London, ON, Canada

Measuring gradient field induced vibration is essential to determine the safety of medical devices in the MR environment. This study investigated vibrations measured both inside and outside the MRI to quantitatively compare the use of accelerometers and laser Doppler vibrometers in gradient field induced vibration testing. Measures were conducted as a function of frequency over the range applicable to MRI gradient coil operation. Results indicate measurements obtained with accelerometers are comparable with laser Doppler vibrometry.

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