This abstract reports a switchable coil element which uses “forced current excitation”. The coil consists of three aligned rungs, with a total length of 37 cm. Any one or more of three rungs can be easily selected to provide a variable length or position field-of-view. The forced current approach ensures equal current on the selected rungs to give a uniform field distribution along the length of the field-of-view. Bench measurements demonstrate the expected efficiency improvement when only a single rung is selected and the uniform field pattern.
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