Flow-related enhancement is an enhancement of flowing blood seen on gradient echo pulse sequences as well as in entry slices of multslice spin echo sequences. This enhancement is a result of inflow of unsaturated (completely relaxed) spins into a slice plane or imaging volume between RF excitations. Stationary spins within the imaging volume will undergo incomplete T1 relaxation between RF excitations resulting in less signal following the next RF pulse when compared to inflowing, completely relaxed spins in flowing blood. The distance that the unsaturated blood can extend into an imaging volume and therefore the degree of enhancement is proportional to the TR and the velocity of the blood. The use of gradient motion nulling (flow compensation) improves the flow-related enhancement in gradient echo sequences.