In-flow artifact

T1-weighted images normally have a dark vessel signal due to saturation effects. This vessel signal can be clinically confusing in regions that have a short T1. The vessel signal becomes bright due to an in-flow effect around the edge slices or in 2D multiple acquisitions with an interleaved slice order.

To suppress signal from slow flow, apply the In-flow signal reduction with 2D FSPGR or 2D Dual Echo and thus minimize the artifact.

Table 1. Image legend

Number	Description
1	2D FSPGR acquired with In-flow signal reduction User CV set to OFF (=0).
2	2D FSPGR acquired with In-flow signal reduction User CV set to ON (=1).