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Identification of the carotid artery dural ring by using three-dimensional computerized tomography angiography.
Y Murayama1, K Sakurama, K Satoh
1Department of Neurosurgery, Tokushima Taoka Hospital, Japan. ymuraya@nmt.ne.jp
Journal of Neurosurgery
|September 22, 2001
Summary
Three-dimensional CT angiography can identify the carotid artery (CA) dural ring, a crucial structure for paraclinoid aneurysm surgery. This imaging technique precisely locates the dural ring by visualizing a concavity in the internal carotid artery (ICA).
Area of Science:
- Neurosurgery
- Neuroradiology
- Anatomy
Background:
- The carotid artery (CA) dural ring is vital for paraclinoid region aneurysm surgery.
- Accurate identification of the dural ring is essential for surgical planning.
Purpose of the Study:
- To investigate the utility of 3D-CT angiography in visualizing the CA dural ring.
- To correlate 3D-CT findings with anatomical and surgical observations.
Main Methods:
- Three-dimensional computerized tomography (3D-CT) angiography was performed on patients with cerebrovascular diseases.
- The shaded surface reconstruction method was used to examine the paraclinoid segment of the internal carotid artery (ICA).
- Anatomical studies and surgical findings were used for correlation.
Main Results:
- A distinct concavity was identified in the paraclinoid segment of the ICA on 3D-CT angiography.
- This concavity corresponded to the level of attachment of the CA dural ring.
- The study confirmed the relationship between the ICA concavity and the dural ring.
Conclusions:
- 3D-CT angiography is an effective method for identifying the CA dural ring.
- This imaging modality aids in precise localization of the dural ring for aneurysm surgery.
- Enhanced visualization improves surgical planning and patient outcomes in paraclinoid aneurysm treatment.