Local distance thresholds for enhanced aneurysm labelling

Abstract

Volume representations of blood vessels acquired by 3D rotational angiography are very suitable for diagnosing an aneurysm. If the aneurysm volume is known, a physician may treat an aneurysm by filling it with coils or glue. We presented a fully-automatic aneurysm labelling method to compute this volume in a previous paper. The global distance thresholds of this method may result in an estimated aneurysm volume which is too large. We developed a method to derive local distance thresholds from the segmented vasculature. Application of these thresholds gives better estimates for the aneurysm volumes.