Fig. 3

Post-processing workflow for the semi-automated assessment of carotid artery geometry. a Computation of a centerline based on time of flight (TOF)-CMR angiography after manual initialization of starting and end points (labelled as red stars). b Manual labeling of the ICA (green dot) and identification of flow diverter (FD, red dot). c Automatic computation of three geometry parameters: α indicates the bifurcation angle; ICA and CCA represent maximum diameters in plane 6 and plane1 for calculation of the ICA/CCA-ratio; L and D indicate the CCA-ICA distances along the lumen center (L) and the direct connection (D), respectively, for the calculation of carotid tortuosity. CCA = common carotid artery; ICA = internal carotid artery