Evaluation of the significance of 64-slice spiral CT vascular imaging in the diagnosis of the variation of cerebral arterial fenestration

Objective: To investigate the CTA manifestation of the variation of cerebral arterial fenestration so as to improve the understanding of the abnormal blood vessels. Methods: Eight cases of patients with the variation of cerebral arterial fenestration were selected and the incidence, position, shape, size and type of fenestration variation, and its relationship with the adjacent cerebral arteries and other complicated vascular abnormalities were analyzed based on its CTA expression and the combination with image processing technology such as the original cross-sectional data VR, MPR and MIP. Results: Eight cases with the variations of cerebral arterial fenestration were detected in 382 patients accepting 64-slice spiral CT angiography and the rate was 2.36%(9/382), in which there were 4 cases occurring at vertebral artery, 3 at basilar artery, 1 at the anterior cerebral artery and 1 at the anterior communicating artery in the variation of the fenestration. Seven cases were complicated by other vascular abnormalities and one case with simple variation of the cerebral arterial fenestration was not complicated by other abnormalities in these 8 patients. Conclusion: The location, size, shape of the variation of cerebral arterial fenestration and its relationships with neighboring and other complications of vascular abnormalities can be clearly and intuitively displayed with multi-angle by 64-slice spiral CT angiography and the detection with it is noninvasive, and therefore it possesses a higher value in clinic diagnosis.