Tracking of cerebral vessels in MR angiography after highpass filtering.
Maximum intensity projection (MIP), the commonly used technique for calculating MR-angiograms from three-dimensional (3D) datasets, often fails to visualize small vessels due to superposition of background signal. An improved vascular depiction can be reached by application of a connectivity algorithm, but a very good delimitation of vessel signals from signals of stationary tissue is required for this technique. Results of intracranial vessel tracking could be improved by a 3D interpolation and a preceding highpass filtering of the 3D image dataset.
Klose
U
U
Department of Neuroradiology, University of Tübingen, Germany.
Petersen
D
D
Martos
J
J
D002536:Cerebral Arteries / Q000033:anatomy & histology*; D005260:Female; D006801:Humans; D018810:Magnetic Resonance Angiography / Q000379:methods*; D008875:Middle Aged