spin echo

noun

Medical Definition of spin echo

: 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 radio-frequency pulses, and that can be used to extract more information from a test sample or subject than conventional nuclear magnetic resonance spectroscopy usually used attributively spin-echo magnetic resonance imaging of the cervical spine — compare gradient echo

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