Abstract
SUMMARY: This is the first report of success in numerically quantifying and visualizing cardiac cycle−related intracranial vessel motion and pulse waves in human subjects by using 320-detector CTA and a newly developed motion-detection algorithm to better understand the physiologies of intracranial arteries. This new technique promises to provide significant novel information for analyzing the elasticity of cerebral vessels and should be incorporated in the analysis of vessel fluid dynamics.
ABBREVIATIONS
- Acom
- anterior communicating artery
- BA
- basilar artery
- bpm
- beats per minute
- CORE
- voxels with a value of 10
- CTA
- CT angiography
- FOV
- field of view
- HALO
- surrounding voxels with values ranging from 1 to 9
- HR
- heart rate
- ICA
- internal carotid artery
- Lt
- left
- MCA
- middle cerebral artery
- MRA
- MR angiography
- PCA
- posterior cerebral artery
- Rt
- right
- VOI
- voxels of interest
- © 2011 by American Journal of Neuroradiology
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