B1+ distortion by residual currents in decoupled Receive arrays
Ed B Boskamp 1 and David M Goldhaber 1
Engineering, GE Healthcare, Waukesha, WI,
Whole body RF transmit coil B1+ uniformity distortion
due to residual currents in receive arrays is being
studied. Complex arrays may be decoupled from B fields
at first glance, but currents can still be induced in
the copper traces by E fields and by B fields in loops
that are not apparent but do exist due to parasitics.
Proper placement of the blocking networks is crucial to
minimize currents in the array and thus B1+ distortion.
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