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Abstract #3714

Robust Dual-Contrast 3D Abdominal Imaging Within a Single Breath-Hold

Nadine Gdaniec1, Peter Koken2, Peter Brnert3, Christian Stehning2, 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

A method for dual-contrast imaging of the abdomen within one breath-hold is proposed, that is able to cope with potential premature breathing-onset. Because of ultra-fast sequence switching the scans are performed quasi-simultaneously and without spatial misregistration. The first scan is sampled conventional one, while the second is adapted to the breath-hold capabilities of the patient. An adaptive sampling pattern was chosen that enables flexible scan termination. Shorter breath-hold duration comes as a compromise at the cost of lower resolution.

Keywords

abdomen abdominal able accelerated adaptation adapted adaptive advantageous aliasing allowing applications artifacts automatic automatically avoid beck best black breath breathing capabilities causing central chosen coarse coil combined combining compromising continuously contrast contrasts cope correlation cover curve degrade delay delivering density detect diagnosis differently distribution dual duration dynamic earlier element emphasize ensures estimation every example fast feasibility final flexible fraction fully furthermore future gradient hamburg held highly hold holding holds immediately improve incoherent inconsistencies increasing indicated induced instructions inversion lead liver locker long look magma manual many mapping measured micro motion navigator nevertheless onset onsets overcome parallel patient pencil perfusion peter potential potentially precise preparation problem profile proposed protocol quality reconstructed reconstruction reducing required resolution resolved respiratory risk robust sampling sensing several shot simultaneously slice spatial spectrometer spoiled starts step stone storing studies subsequent substantially sudden supporting switching system task tasks temporal temporally termination torso typical uncritical underlying variable volunteer volunteers water