Novel dynamic four-dimensional CT angiography revealing 2-type motions of cerebral arteries
Yasuyuki Umeda1, Fujimaro Ishida, Kazuhide Hamada
1Department of Neurosurgery, Mie University School of Medicine, Tsu, Japan 2-174. umedokodemodoor@mac.com
Background And Purpose:
We developed a novel dynamic 4-dimensional CT angiography to accurately evaluate dynamics in cerebral aneurysm.
Methods:
Dynamic 4-dimensional CT angiography achieved high-resolution 3-dimensional imaging with temporal resolution in a beating heart using dynamic scanning data sets reconstructed with a retrospective simulated R-R interval reconstruction algorithm.
Results:
Movie artifacts disappeared on dynamic 4-dimensional CT angiography movies of 2 kinds of stationary phantoms (titanium clips and dry bone). In the virtual pulsating aneurysm model, pulsation on the dynamic 4-dimensional CT angiography movie resembled actual movement in terms of pulsation size. In a clinical study, dynamic 4-dimensional CT angiography showed 2-type motions: pulsation and anatomic positional changes of the cerebral artery.
Conclusions:
This newly developed 4-dimensional visualizing technique may deliver some clues to clarify the pathophysiology of cerebral aneurysms.
More Related Videos
09:57Four-Dimensional Computed Tomography-Guided Valve Sizing for Transcatheter Pulmonary Valve Replacement
Published on: January 20, 2022
05:23Construction and Application of Cerebral Functional Region-Based Cerebral Blood Flow Atlas Using Magnetic Resonance Imaging-Arterial Spin Labeling
Published on: May 31, 2024
Related Concept Videos
Magnetic Resonance Imaging
Imaging Studies for Cardiovascular System V: CT
Imaging Studies for Cardiovascular System IV: CMRI
Imaging Studies VII: Vascular Imaging
