Yanle Hu1
1Imaging Research Center, University of
Texas at Austin, Austin, TX, United States
When
the object being imaged is larger than the field of view in slice-selection
direction (zFOV), wrap-around aliasing artifacts will be observed in 3D
sequences even with the use of a high performance excitation pulse. Although
throwing away a couple of edge slices can solve the problem, it reduces the
efficiency of the 3D method. In this work, a new technique is introduced. It
excites and saturates spins in two thin slices immediately outside of zFOV
before the slab excitation. As a result, aliasing artifacts in edge slices
can be suppressed and the efficiency of 3D acquisition can be preserved.