Abstract #3655

Measuring Gradient-Induced Vibration of a Conductive Device using Laser Doppler Vibrometry at 3T

Daniel J Martire¹, Krzysztof Wawrzyn¹, William Bradfield Handler¹, and Blaine A Chronik¹

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

In this project, a method to quantify the gradient-induced vibration of a medical device in an MR system using a laser Doppler vibrometer is presented. A copper annulus was suspended in a 3T scanner, at a position chosen to maximize the x-component of the x-gradient. The displacement of the device was measured at different gradient field strengths. Typical observations were understood, which should lead towards helping establish a test standard for gradient induced vibrations of implanted medical devices.

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