Accuracy and imaging characteristic analysis of CTA and DSA in diagnosing cerebral arteriovenous malformations
Objective To explore and analyze the accuracies and imaging characteristics of CT angiography(CTA)and digital subtraction angiography(DSA)in diagnosing cerebral arteriovenous malformations(AVM).Methods The clinical data of 40 patients with AVM admitted to Tongchuan People's Hospital from January 2019 to December 2023 were retrospectively analyzed,including 31 males and 9 females,aged 35-73 years.All patients underwent CTA and DSA examinations,and the imaging characteristics of the two examination methods were compared.Meanwhile,the diagnostic accuracies and misdiagnosis rates of the two examination methods were compared with the postoperative pathological results as the gold standard.The spatial relationships between the two techniques on blood supply arteries,drainage veins,and intracranial aneurysms were observed.x2 test and t test were used.Results CTA and DSA were relatively clear in the detection of lesions,and there was no statistically significant difference in the diagnosis of malformed vascular mass between the two methods(x2=0.966,P=0.616).With postoperative pathological results as the gold standard,all patients could see clear supplying arteries,with 116 supplying arteries and 73 draining veins;DSA examination showed that the diagnostic accuracies of supplying arteries and draining veins were 100.00％(116/116)and 97.26％(71/73),which were higher than 97.41％(113/116)and 93.15％(68/73)of CTA,but the difference was not statistically significant(x2=0.037,P=0.981).The clear rates of spatial relationship of intracranial aneurysms showed by DSA and CTA were 82.50％(33/40)and 85.00％(34/40),respectively,without statistically significant difference(x2=0.214,P=0.898).The diagnostic accuracy and misdiagnosis rate of DSA for cerebral AVM were 92.50％(37/40)and 7.50％(3/40),respectively,while those of CTA were 87.50％(35/40)and 12.50％(5/40),respectively,without statistically significant difference(x2=0.555,P=0.456).Conclusions Considering the advantages and disadvantages of CTA and DSA,the diagnosis of malformed vascular mass in CTA and DSA is basically the same.CTA can be used as the first non-invasive method for diagnosis.If the diagnostic detection rate needs to be further improved,a combined scheme can be adopted to reduce diagnostic errors as much as possible,which is worthy of clinical attention.
Cerebral arteriovenous malformationsCT angiographyDigital subtraction angiographyBlood supply artery examinationImaging features
万方数据
维普
