A head or body coil assembly for picking up signals in an MRI system is provided. It includes a thin band of conductive material which surrounds the specimen having a thickness comparable to the skin depth at the frequency of the spin echo signals of the MRI system but being transparent to gradient waveform...http://www.google.com.tw/patents/US4916399?utm_source=gb-gplus-share專利 US4916399 - Head or body coil assembly for magnetic resonance imaging apparatus
