Gradient Echo pulse sequence ll 20 important Q&A #73 ll Part -1 ll

A GRE sequence is a series of radiofrequency (RF) pulses that are repeated at a time interval (TR).

The RF pulses are often chosen to have flip angles less than 90°. A GRE sequence does not have an 180 degree pulse, and its T2 relaxation is called T2* relaxation

The gradient technique reduces scan time by using small flip angles and short repetition times
GRE sequences are used to acquire T2*, T1, and proton density weighting.
spin-echo sequence (leading to shorter TE) and is susceptible to static field inhomogeneities.

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