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Abstract #4278

Towards Clinical Robustness in 3D Abdominal Water/Fat Imaging

Nadine Gdaniec1, Tim Nielsen2, Peter Brnert3, Holger Eggers2, Mariya Doneva4, Alfred Mertins1

1University of Lbeck, Lbeck, Germany; 2Philips Research Laboratories, Hamburg, Germany; 3Philips Research Laboratory, Hamburg, Germany; 4Philips Research Europe, Hamburg, Germany

Breath-holding is an efficient strategy to minimize respiration induced artifacts in the abdomen if the patients capability is sufficient. The sampling pattern used deals with premature breathing onset by flexible scan termination. A temporally continuous compromise is made between SNR, undersampling aritifacts and resolution. This work aims at finding the optimal compromise by simulations on phantom experiments. To meet real clinical needs, dual-echo imaging was added for water-fat separation. The scan was complemented with a fast motion detection navigator that does not disturb the steady state and triggers automatic scan termination. Coil compression was applied for reduced reconstruction time.

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Keywords

abdominal achievable achieved actually added addition aliasing allowing applications artifacts automatic beck become becomes best breath breathing building central channel chosen clinical coil coils combination combined complemented complex compressed compression compromise consistency controlled cope copes correlation coverage cropped curve dedicated degraded density dependent detection distribution disturb dual echoes efficient element employed enables enabling energy even every extended facilitates fast faster final fixed fully function furthermore good gradient growing hamburg highest hold holding illustrative improved incoherent incomplete increasing indicated indicates individual laboratories long measuring motion navigator neighboring nested nevertheless noise note onset optimal overall pattern pave periphery permit phantom premature promising proposed pure quality radius reconstruct reconstruction reduce reduction reformats reproducible resolution resolved respiration robustness sampled samples sampling scanning self sensing separation short simulation simulations slices slow space spatial spoiled stable steady stone straightforwardly subsequently success takes temporal terminated termination torso towards trustworthy typical upper variable virtual visible volunteer volunteers water whereas