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Abstract #2332

Time-resolved Artery-selective Angiography based on Super-selective Arterial Spin Labeling

Thomas Lindner 1 , Ulf Jensen-Kondering 1 , Olav Jansen 1 , Matthias JP van Osch 2 , and Michael Helle 3

1 Department of Radiology and Neuroradiology, UKSH, Kiel, Germany, 2 Department of Radiology, LUMC, C. J. Gorter Center for High Field MRI, Leiden, Netherlands, 3 Philips Research, Hamburg, Germany

In this study, we present a method for time-resolved artery-selective non-contrast enhanced magnetic resonance angiography. The presented method is based on superselective arterial spin labeling (ASL), which allows tagging of a single artery. Time-resolved imaging is achieved by increasing the post labeling delay for each image, resulting in a temporal resolution of 100ms. To keep the acquisition time to an acceptable amount, keyhole reduced imaging is applied, where the keyhole factor as well as the flip angle were optimized using numerical simulations. This method was successfully applied in healthy volunteers, visualizing the individual flow territories of the intracranial arteries.

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