n :  a signal that is detected in a nuclear magnetic resonance spectrometer, that is an echo-like replication of a free induction decay produced by a planned series of radiofrequency pulses, and that can be used to extract more information from a test sample or subject than conventional nuclear magnetic resonance spectroscopy - usu. used attributively <spin-echo magnetic resonance imaging of the cervical spine>  - compare GRADIENT ECHO  .
 
 
 
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