The system 2 in which the means for producing the NMR motion pulse sequence includes means for producing an RF excitation pulse which produces transverse magnetization in {TAIL ~ spins} contained in the subject, and means for producing a magnetic field gradient along {HEAD ~ said axis}; and the means for acquiring the NMR motion signals includes means for receiving and digitizing the NMR motion signals while said magnetic field gradient is being produced 
The system 2 in which the means for producing the NMR motion pulse sequence includes means for producing an RF excitation pulse which produces transverse magnetization in { TAIL ~ spins } contained in the subject , and means for producing a magnetic field gradient along { HEAD ~ said axis } ; and the means for acquiring the NMR motion signals includes means for receiving and digitizing the NMR motion signals while said magnetic field gradient is being produced
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH