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Abstract #4219

Evaluation of highly undersampled contrast-enhanced MR angiography (SPARSE CE-MRA) in intracranial applications

Marcel Gratz1,2, Marc Schlamann3,4, Sophia Göricke4, Stefan Maderwald2, and Harald H. Quick1,2

1High Field and Hybrid MR Imaging, University Hospital Essen, Essen, Germany, 2Erwin L. Hahn Institute for Magnetic Resonance Imaging, University Duisburg-Essen, Essen, Germany, 3Neuroradiology, University Hospital Giessen and Marburg GmbH, Giessen, Germany, 4Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany

Highly undersampled contrast-enhanced intracranial MR angiography (SPARSE CE-MRA) was evaluated regarding the vascular visibility and image quality in a clinical setting on a 3T MRI system for 23 patients with various pathologies. The overall performance is comparable to TOF MR angiography, yet with much shorter acquisition times and a high-resolution whole-head coverage in both arterial and venous phase. However, a strong dependence of the obtained MRA quality on the bolus timing of the contrast agent was found and needs to be properly addressed by the operators to minimize the arterio-venous overlap in the imagery for best diagnostic quality.

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