Diagnostic CTA Analysis of Cerebral Artery Opening Variations
Objective:To analyze cranial angiography(CTA)diagnosis of cerebral arterial windowing(CAF)variants in order to improve the understanding of cerebrovascular windowing variants by CTA examination.Methods:CT image data with cerebral artery windowing variant in hospitals performing craniocerebral CTA from March 2017 to December 2020 were collected and the incidence of cerebral artery windowing,its location,and its imaging performance characteristics were analyzed.Results:0f the 2015 patients with cranial CTA,cerebral arterial openings were found in 68 patients(70,including two patients with two openings),including 1 internal carotid artery(1.4%),12 anterior cerebral arteries(17.1%),1 anterior communicating artery(1.4%),three middle cerebral arteries(4.3%),28 vertebral arteries(40.0%),and 24 basilar arteries(34.3%).There were 28 fissure-like openings,12 convex lens-like openings,and 30 repetitive openings.Conclusion:The vertebral artery has the highest incidence of windowing,followed by the basilar and anterior cerebral arteries.Slit-type openings were most common in the anterior circulation arteries,and repetitive openings were seen mainly in the vertebral arteries.