Abstract #1017
Movement Monitoring for MRI via Measurement of Changes in the Gradient Induced EMF in Coil Arrays
E. H. Bhuiyan 1 , M. E. H. Chowdhury 1 , P. M. Glover 1 , and R. Bowtell 1
1
SPMIC, School of Physics and Astronomy,
University of Nottingham, Nottingham, United Kingdom
Here we describe an initial evaluation of a new approach
for monitoring head motion, which involves measuring the
pattern of voltage amplitudes induced in an array of
small coils by the time-varying magnetic field gradients
of the MR scanner. We have constructed a rig carrying
five small coils, which can undergo controlled
translations (in x, y and z) and rotations (about the x-
and y-axes) inside the scanner, and have measured the
changes in the voltages induced in these coils by
time-varying x-,y- and z-gradients as the rig position
changes, comparing the results with simulations.
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