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Abstract #1421

Non-Enhanced Vs. Contrast-Enhanced MRA at 7Tesla: a Feasibility and Comparison Trial.

Lale Umutlu1, Thomas C. Lauenstein1, Oliver Kraff2, Stefan Maderwald2, Stephan Orzada2, Sonja Kinner1, Christina Heilmaier1, Gerald Antoch1, Mark E. Ladd2, Harald H. Quick2,3

1Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany; 2Erwin L.Hahn Institute for Magnetic Resonance Imaging; 3Institute for Medical Physics, Friedrich-Alexander-University Erlangen-Nrnberg

Aim of this pilot study of 7T MRA was to investigate the diagnostic capability of non-enhanced 7T MRA and the feasibility of contrast-enhanced ultrahighfield MRA. 8 healthy subjects were examined on a 7T whole-body MR system utilizing a custom-built 8-channel RF transmit/receive body coil. Qualitative and quantitative analysis results demonstrate the diagnostic superiority of TOF-MRA among the non-enhanced sequences as well as its diagnostic capability towards contrast-enhanced MRA. In Conclusion, this first pilot study of dedicated 7TMRA shows the feasibility of contrast-enhanced MRA, as well as the diagnostic ability of TOF MRA e.g. in case of renal insufficiency.