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Abstract #3548

Relevance of respiratory gating for proton Lung MRI

Marta Tibiletti 1 , Jan Paul 2 , Detlef Stiller 3 , and Volker Rasche 1,2

1 Core Facility Small Animal MRI, University of Ulm, Ulm, BW, Germany, 2 Department of Internal Medicin II, University Hospital Ulm, Ulm, BW, Germany, 3 Target Discovery Research Germany, Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach, BW, Germany

We have tested the effect of prospective respiratory gating on image sharpness in two radial short T2 method (THRIVE and UTE) for lung imaging in human volunteers at 3T. Qualitative and quantitative results show a significant increase in image sharpness in gated acquisition with respect to not gated ones. We have demonstrated that respiratory gating is necessary when high definition images of lung vessels and airways are needed, even if radial acquisitions are robust to movement artifacts and prospective gating typically double acquisition time. UTE acquisitions show promising results for vessels visualization without contrast agent.

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