The Clinical Application Value Of Research Of 256-slice Sprial Ctangiography In The Diagnosis Of Craniocervical Vascular Disease

Objective:Through 103 cases of patients with CTA examination,to investigate the clinical value of 256-slice sprial CTA in the craniocervial vascular disease.Methods:The patients suspected of craniocervial vascular disease were underwent 256-slice spiral CTA,and the experienced doctors analysed the disease of 13 arteries( bilateral subclavian artery 、bilateral carotid artery 、bilateral vertebral artery 、bilateral anterior cerebral artery、bilateral middle cerebral artery、bilateral posterior cerebral artery、basilar artery),including analysis of the location、degree of arteriostenosis, location、nature、size of arteriosclerosis plaque, aneurysm, arteriovenous malformation, moyamoya disease,arterial dissection,inborn variation of vessel.Reconstruction methods used for analysis included curved planar reconstruction( CPR) 、 maximum intensity projections(MIP)、multiple planar reconstruction(MPR)、volume rendered technique(VRT).Results:Among 103 patients examined by 256-slice sprial CTA,,63 cases were diagnosed as arteriostenosis or arteriosclerosis, 7 cases were diagnoed as arterial aneurysm(2 cases were diagnosed as arteriosclerosis with arterial aneurysm,), 1 case was diagnosed moyamoya disease,3 cases were diagnosed arterial dissection,29 cases were diagnosedinborn variation of vessel( 24 cases were diagnosed as arteriosclerosis with inborn variation of vessel).And among all inborn variation of vessels,the study included 3fenestrations,12 FTPs(fetal origin of the posterior cerebral artery),,5 ACA(anterior cerebral artery)absence of A1 part,2 odd ACA,3 abnormal route of VA(vetebral artery),7 abnormal origin of VA,,3 LCCA(left common catotid) and truncus brachiocephalicus with common origin(1 with abnormal origin of LVA and Persistent Trigeminal Artery).And through comparison with DSA of 40 cases among arteriostenosis, the sensitivity 、specificity、FP and FN of CTA were 92.3%、97.4%、2.6%、7.7%,the consistency was 0.721.Conclusion:256-slice sprial CTA not only detect disease much more quickly and clearly,but also has higher accruacy in diagnosis,so it can offer reliable evidence in clinical applicatiion.