(CE-FAST) In this technique, the MR signal is sampled immediately prior to each RF pulse. Because the signal is formed by a true spin echo, its contrast is predominantly T2-, rather than T2*-based and is less sensitive to artifacts and signal losses related to field non-uniformity and susceptibility variation. While the signal to noise ratio is limited, the CE-FAST method has the advantage of good contrast.

See Contrast Enhanced Gradient Echo Sequence and Gradient Echo Sequence.

(CE-FFE-T1) A T1 weighted gradient echo sequence.

See Spoiled Gradient Echo Sequence.

(CE-FFE-T2) A T2* weighted gradient echo sequence.

See Coherent Gradient Echo and Contrast Enhanced Gradient Echo Sequence.

(FFE) An echo signal generated from a FID by means of a bipolar switched magnetic gradient. The preparation module of the pulse sequence consists of an excitation pulse. The magnetization tilts by a flip angle between 0° and 90°.

See Gradient Echo Sequence and Refocused Gradient Echo Sequence.

(FGRE) The fast gradient recalled echo sequence belong to the refocused gradient echo sequences.

See Gradient Echo Sequence.