Aurelien F. Stalder1,2, Alex Frydrychowicz3, Andreas Harloff4, Qi Yang1, Jelena Bock2, Juergen Hennig2, Kuncheng Cheng Li1, Michael Markl2
1Dept. of Radiology, Xuanwu Hospital, Capital Medical University, Beijing, China; 2Dept. of Diagnostic Radiology - Medical Physics, University Hospital, Freiburg, Germany; 3Dept. of Radiology, University of Wisconsin-Madison, Freiburg, Germany; 4Dept. of Neurology, University Hospital, Freiburg, Germany
4D flow-sensitive MRI was used with 3D flow visualization techniques and a vortex core detection algorithm to detect patterns of swirling flow in the aorta, the carotid arteries as well as intracranial arteries in volunteers and patients. While aneurysms presented strong vortex cores, weaker vortex cores were identified in the healthy aortic arch and the healthy internal carotid artery. The vortex core detection provided a fast and simple way to detect locations of swirling flow within 4D flow-sensitive MRI datasets.