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[Anatomical study and three dimensional image characteristic analysis of basicranial artery and its clinical
Hua Yang1, Jian Liu, Jing-chuan Wang
1Department of Neurosurgery, Affiliated Hospital of Guiyang Medical University, Guiyang 550004, China.
Insights
This study measured basicranial artery diameters and angulations in adult heads. Findings aid catheter selection and reduce complications in endovascular treatments for cerebrovascular diseases.
Area of Science:
- Neuroanatomy
- Vascular anatomy
- Medical imaging
Context:
- Understanding the anatomy of basicranial arteries is crucial for neurovascular procedures.
- Variations in the Circle of Willis can impact surgical planning and outcomes.
- Accurate measurements are needed for effective endovascular therapy.
Purpose:
- To measure the inside diameter of basicranial arteries.
- To assess the angulation of major cerebral arteries.
- To characterize the three-dimensional anatomy of internal carotid arteries and variations of the Circle of Willis.
Summary:
- Measurements of internal carotid artery (ICA), middle cerebral artery (MCA), anterior cerebral artery (ACA), vertebral artery (VA), basilar artery (BA), and posterior cerebral artery (PCA) origins were recorded.
- Angulation measurements for ICA segments and between ICA and ACA were documented.
- Analysis revealed no significant differences in anatomical and 3D imaging characteristics of ICAs (P > 0.05).
- Variations in the Circle of Willis were categorized, with Type O being the most prevalent (56.7%).
Impact:
- Provides essential anatomical data for selecting appropriate catheters in interventional neuroradiology.
- Informs the precise molding of catheters for endovascular therapy based on arterial angulation and 3D characteristics.
- Mastering Circle of Willis variations aids in minimizing complications and improving prognosis assessment for cerebrovascular diseases.
Objective:
To observe and measure the inside diameter of basicranial arteries, the angulation of main arteries, the three dimensional image characteristic of internal carotid arteries and the anatomical variation of Willis circle.
Methods:
The arteries of 30 formalin-fixed adult heads were injected with latex after which the caliber and characteristic of cerebral arteries were observed and measured. The three dimensional image characteristic of internal carotid arteries and its branches were measured using 3D-DSA.
Results:
(1) Main artery caliber: origin of internal carotid artery (Left 5.12 +/- 1.48 mm; Right 5.11 +/- 1.42 mm); origin of middle cerebral artery (Left 2.93 +/- 1.44 mm; Right 2.92 +/- 1.46 mm); origin of anterior cerebral artery (Left 2.63 +/- 1.33 mm; Right 2.61 +/- 1.32 mm); origin of vertebral artery (Left 4.37 +/- 1.21 mm; Right 3.22 +/- 1.64 mm); origin of basilar artery (4.45 +/- 1.28 mm); origin of posterior cerebral artery (Left 2.62 +/- 1.36 mm; Right 2.61 +/- 1.22 mm). (2) The angulation of main arteries: C1, 2 of ICA and C4, 5 of ICA (Left 32 +/- 22 degrees; Right 36 +/- 28 degrees ); ICA and ACA (Left 43 +/- 26 degrees; Right 46 +/- 28 degrees). (3) The results show that anatomical and three dimensional image characteristic of internal carotid arteries have no difference (P > 0.05). (4) The anatomical variation of Willis circle: Type O (56.7%); Type A (16.7%); Type P (20.0%); Type AP (6.7%).
Conclusions:
It is helpful to measure the inside diameter of basicranial arteries for the selection of various catheter in interventional neuroradiology, to observe the angulation of main arteries and the three dimensional image characteristic of internal carotid arteries for the moulding of various catheter in endovascular therapy and to master the anatomical variation of Willis circle for decreasing complications of endovascular treatment and judging prognosis of cerebrovascular diseases.