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