Improved spoiling efficiency in dynamic RF-spoiled imaging by ghost phase modulation and temporal filtering

摘要

PurposeRF-spoiled steady-state sequences offer rapid data acquisition with T1- or T2*-weighting. The spoiler gradients in these sequences must be large enough to suppress ghosting artifacts, and are chosen empirically. However, certain factors such as the need to minimize gradient first moments or acoustic noise can limit the spoiler size and hence the ability to suppress ghosts. We present an acquisition and pre-processing strategy for improved spoiling efficiency in conventional and echo-shifted (ES) dynamic RF-spoiled 3D imaging.