Comparative Analysis Of CTA And DSA In The Diagnosis And Evaluation Of Intracranial Aneurysms

Objective Digital subtraction angiography(DSA)was used as a reference standard to investigate the clinical value of CT angiography(CTA)in the rapid diagnosis and treatment of intracranial aneurysms.Methods The clinical data and CTA and DSA results of 61 patients with intracranial aneurysms who were treated with neurosurgery department of Chaohu Hospital Affiliated to Anhui Medical University from March 2016 to June 2019 were retrospectively analyzed.Review and analyze from the following four aspects:(1)Based on the DSA test results,the number and location of aneurysms detected by CTA were analyzed,and the difference between the two and the detection rate of CTA on aneurysms were compared.(2)The aneurysms co-detected by CTA and DSA were measured at the same angle of CTA and DSA,respectively,and their neck,maximum width and maximum length were measured.Compare whether the two are statistically different between the measured values.(3)Comparative analysis CTA and DSA were statistically significant in determining whether a wide-neck aneurysm was present.(4)Analyze whether there is a statistical difference between CTA and DSA aneurysms and the resolution of the tumor-bearing artery and surrounding vessels.ResultsOf the 61 patients,83 had aneurysms,56 ruptured aneurysms,and 27 unruptured aneurysms.A total of 79 aneurysms were detected in CTA,including 56 ruptured aneurysms and 23 unbroken aneurysms.A total of 4 aneurysms were not detected,all were non-responsible aneurysms,which were left posterior communicating aneurysm,right internal carotid cavernous sinus aneurysm,right posterior communicating aneurysm and left vertebral artery aneurysm.Compared with DSA,the overall detection rate of CTA was 95.18%,and the detection rate of responsible aneurysm was 100%.The measured values of CTA and DSA for the maximum width of aneurysms were 4.932±3.8411 and 4.808±3.8042,respectively,and the difference was not statistically significant(p=0.107).The maximum long diameter measurements were 5.252±3.4476 and 5.171±3.3729,respectively.The difference was not statistically significant(p=0.369);the measured values for the neck were 3.423±2.5845 and 3.254±2.6089,respectively,which were statistically significant(p=0.000).There was a statistically significant difference between CTA and DSA in wide-neck aneurysms(P=0.033).CTA and DSA showed statistically significant differences in the clarity of aneurysms and the parental artery and surrounding vessels(P=0.005).ConclusionThe detection rate of aneurysm was higher in CTA(95.18%),and the detection rate of responsible aneurysm was the same as DSA.There was no significant difference between CTA and DSA in measuring the widest diameter and longest diameter of aneurysm(P>0.05).There was a significant difference between the measured values of the aneurysm neck(P<0.05),and the CTA measurement was greater than the DSA measurement;CTA was more likely to define the aneurysm as a wide-neck aneurysm(P>0.05);CTA around the aneurysm Vascular display clarity was significantly lower than DSA(P<0.05);CTA examination was preferred as a first choice for patients with suspected aneurysmal subarachnoid hemorrhage,but DSA results were still needed to develop a specific treatment plan.