Influence and Compensation of Fat Signal Dephasing and Decay in Two-Point Dixon Imaging

Introduction Dixon methods do not only provide a more robust fat suppression in the presence of field inhomogeneity than selective saturation and excitation methods, but also promise a more complete fat suppression, when multi-peak spectral models of fat are employed in the separation. The latter has convincingly been demonstrated for a three-point method lately [1]. In this work, such models are incorporated into a novel two-point method with unrestricted choice of echo times [2], and the influence of fat signal dephasing and decay, both without and with consideration in the separation, on the extent of fat suppression in two-point Dixon imaging is studied.