Meeting Banner
Abstract #0392

A Travelling Wave Antenna with Matched Waveguide for Head Imaging at 7 T

Daniel James Lee1, Paul M. Glover1

1SPMMRC, University of Nottingham, Nottingham, Nottinghamshire, United Kingdom

The travelling wave approach to MRI uses an antenna to propagate a TW through the bore of a 7T+ scanner. A novel design where the antenna is incorporated into a dielectric waveguide which then matches the incident wave into the head is presented. Such a set up has been constructed and tested in vivo.

Keywords

access achieve achieved allow allowed allowing allows amplifiers antenna apart apparatus around assembled assume audience axial bend best biology blue bore bottom built carefully cavity chosen compatible constructed copper coverage criteria decoupled design development dielectric dipole easy either elements epoxy ethical excitation excites facilitate family fashion field formed fully generated geometry glover good green halves hardware head heat held hollowed homogeneity homogeneous identical impedance improved in vivo incident insulated involves leads length local magnitude maps masked masking match matched mismatches modes mountings nature noise noted open orthogonal parts patch physics placed plate positioned positioning power proceedings produced profiles propagate protocols radius reasonable receive receiver receivers relatively removed replacing resin safety scanner scanning screened section sections seems shapes shim shimming shrink simulated simulation simulations since spins square stimulate stimulus stronger stub stubs subsequent tape target theoretically though together transmit transportation tube tuned tuning typical typically uniform users visual water wave waveguide wide wire wrapping