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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