On the Diffusion Sensitivity of 2D- & 3D-Turbo Spin Echo Sequences

Matthias Weigel¹, Jrgen Hennig¹

The present work investigates the diffusion sensitivity of 2D- and 3D-TSE sequences; for variants with low constant or variable refocusing flip angles in particular. The performed simulations using realistic protocol settings are based on an extended phase graph (EPG) approach that was published recently. It is found that especially novel 3D-TSE sequences with extended echo trains and variable low flip angles usually known as SPACE or CUBE exhibit a notable diffusion weighting that should not be neglected.