![](https://upload.wikimedia.org/wikipedia/commons/thumb/8/88/MRI_2DFT_SE_PulseSequence.png/220px-MRI_2DFT_SE_PulseSequence.png)
![](https://upload.wikimedia.org/wikipedia/commons/thumb/a/ab/Noesy_pulse_sequence.png/220px-Noesy_pulse_sequence.png)
![](https://upload.wikimedia.org/wikipedia/commons/thumb/6/62/INEPT_Pulse_Sequence.png/220px-INEPT_Pulse_Sequence.png)
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.[2]
The outcome of pulse sequences is often analyzed using the product operator formalism.
See also
[edit]References
[edit]- ^ M H Levitt (2008). Spin Dynamics. John Wiley & Sons Ltd. ISBN 978-0470511176.
- ^ Bernstein, M.A.; King, K.E.; Zhou, X.J.; Fong, W. (2004). Handbook of MRI Pulse Sequences. Retrieved 2008-04-08.
External links
[edit]- Pulse sequences in the online textbook
- The Basics of NMR (by Joseph Hornak)