[Comparison of long-axis and short-axis PROPELLER-EPI for diffusion-weighted Magnetic Resonance Imaging]

Echo planar imaging (EPI) in combination with PROPELLER allows high-resolution diffusion-weighted imaging. In this study, the image quality of short-axis and long-axis PROPELLER was compared and optimized using phantom and in vivo data. Furthermore, diffusion-weighted measurements using both sequences were compared with those of a reference sequence. It was found that the long-axis sequence provided better image quality, whereas the results of the diffusion weighted measurements were more accurate with the short-axis variant. and that the results of the diffusion weighted measurements of both sequences agreed well with those of the reference sequence.