关键词: 体层摄影术; 螺旋计算机; 脑血管造影术; 血管造影术; 数字减影; 颈动脉狭窄

Abstract: Objective To evaluate the clinical application value of 64-slice spiral computed tomography(CT)angiography to intracranial artery stenosis and cervical artery stenosis.Methods The datas of 64-slice spiral computed tomography angiography(64-SSCTA) and digitalsubtraction angiography(DSA) in seventy-four patients with transient ischemic attack or ischemicwere retrospective analyzed and the level of intra or extra-cranial artery stenosis were evaluated.According to “gold standard” of DSA, the sensibility, specificity and accuracy rating of 64-SSCTAhad been calculated respectively; and the identical degree of angiostegnosis detected by DSA and64-SSCTA was assessed.Results In the 74 patients, 814 intra or extra-cranial arteries had been evaluated. Among the 117arteries which had stenosis discovered by 64-SSCTA, there were 103 stenosis had been confirmedby DSA. There were 9 artery stenosis confirmed by DSA did not discovered by 64-SSCTA.According to “gold standard” of DSA, the sensibility, specificity and accuracy rating of 64-SSCTAto the affection were 92.0%, 98.0% and 97.2% respectively. The difference in detection ratebetween 64-SSCTA and DSA has no significance(χ2=0.076, P =0.439).Conclusion Sixty-four-slice spiral CT angiography long coverage in intracranial and cervical arteriesis a quick and harmless examination. To the patients with ischemic cerebrovascular disease, 64-SSCTAhave high sensibility, specificity and accuracy rating in detecting patient's vascular lesions.

Key words: Tomography; spiral computed; Cerebral angiography; Angiography; digitalsubtraction; Carotid stenosis