Imaging of the Spine with Metal Implants Using High-Bandwidth RF Pulses from a Local Tx/Rx Coil
Theresa Bachschmidt 1,2 , Johanna Schpfer 3 , Stephan Biber 2 , Peter Jakob 1 , and Mathias Nittka 2
Department of Experimental Physics 5,
University of Wrzburg, Wrzburg, Germany,
Resonance, Siemens AG, Erlangen, Germany,
Technology, Siemens AG, Erlangen, Germany
Spinal fusion is a common surgery, which often requires
follow-up treatments. However, the compensation of
metal-induced through-plane distortion is time-consuming
and its application in clinical routine is limited.
Distortion through-plane is even enhanced at 3T compared
to 1.5T and demands reduction before it is corrected; it
scales inversely with the bandwidth of the RF pulse.
Local transmit coils feature higher peak B1, hence
enable higher RF bandwidths, than whole-body birdcage
coils. This work presents the capability of a prototype
Tx/Rx spine coil with respect to minimizing
through-plane distortion. RF bandwidths of 3.3 kHz can
decrease time-consuming artifact compensation
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