Pulse sequence

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Timing diagram for an MRI spin echo pulse sequence.

In Fourier transform NMR spectroscopy and imaging, a pulse sequence describes a series of radio frequency pulses applied to the sample, such that the free induction decay is related to the characteristic frequencies of the desired signals. After applying a Fourier transform, the signal can be represented in the frequency domain as the NMR spectrum. In magnetic resonance imaging, additional gradient pulses are applied by switching magnetic fields that exhibit a space-dependent gradient which can be used to reconstruct spatially resolved images after applying Fourier transforms.[1]

The outcome of pulse sequences is often analyzed using the product operator formalism.

See also[edit]


  1. ^ Bernstein, M.A.; King, K.E.; Zhou, X.J.; Fong, W. (2004). Handbook of MRI Pulse Sequences. Retrieved 2008-04-08. 

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