Thomas Lindner1, Naomi Larsen1, Olav Jansen1, and Michael Helle2
1Clinic for Radiology and Neuroradiology, University Hospital Schleswig-Holstein, Kiel, Germany, 2Philips GmbH Innovative Technologies, Research Laboratories, Hamburg, Germany
In this
study, different approaches for obtaining selective Arterial Spin Labeling
(ASL) angiograms are presented. Conventionally, the label image of each artery
has to be matched with a separate control image. In this study, the number of
control acquisitions is reduced, thus, making it possible to reduce acquisition
times considerably. In one approach, a shared control condition is used for
three selectively labeled arteries to obtain the final images (“cycled
super-selective ASL”). This means that only one control image is used for
subsequent data processing with three images of different arteries. In the
second approach, no control image is required at all and the angiography
information can be obtained from the label images only (“self-control ASL”). Image
quality appeared similar in all approaches. Compared to super-selective ASL,
image acquisition times are reduced in the presented approaches.
