A half-volume quadrature TEM coil high field (>3 T) imaging
applications. This novel coil produces a sufficiently large homogeneous
B.sub.1 field region for the use as a volume coil. It provides superior
transmission efficiency, resulting in significantly lower power
deposition, as well as greater sensitivity and improved patient comfort
and accessibility compared with conventional full-volume coils.
Additionally this coil compensates the RF penetration artifact that
distorts high-field images recorded with linear surface and volume coils.
These advantages make it potentially possible to apply the device as an
efficient transmit/receive body coil at high fields, where the use of the
full-volume coils is complicated by the excessive power deposition and
low sensitivity.