Meeting Banner
Abstract #0365

Water-Fat Identification in Dual-Echo Dixon Imaging

Holger Eggers1

1Philips Research, Hamburg, Germany

While the separation of two signal components with fixed difference in resonance frequency is usually straightforward in dual-echo Dixon imaging, establishing their correspondence to water and fat signals is more intricate. To increase the robustness and to decrease the complexity of the separation, a direct identification of water or fat signals is desirable. In the present work, an approach to such a direct identification in dual-echo Dixon imaging is proposed, which exploits the spectral complexity of fat for a differentiation between water and fat signals. Its potential is analyzed theoretically and demonstrated experimentally on high-resolution pelvic imaging.

Keywords

acquisition alternatively amplitude applicable applying arch assigned assumed best choice commonly completely complexity components considerably constants denote depend directly dominant dotted dual either eliminated ensure equations error exam exhibit exist existing exploit face feasible field filtering function gradient growing hamburg heuristically homogeneity ideal identification immediately imposing in vivo increasing inhomogeneity inspired instance iterative leads like lipid local major majority margins mining minor model modeled near negative noise opposed optimization optimized part peak pelvic permits plotted possibilities previous priori processes produced pure puree quadratic radiology real recent relies remaining resolved respect robustness seed seems selecting seven short smaller solution solutions space spectral suitable swaps taking theoretical tissues unambiguous valid vast water watter yields