The acquired motion NMR data is processed on line to produce a signal indicative of {HEAD ~ the displacement} of {TAIL ~ the abdominal wall} from a reference position 
of
The acquired motion NMR data is processed on line to produce a signal indicative of { HEAD ~ the displacement } of { TAIL ~ the abdominal wall } from a reference position
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH