Objective    To compare the diagnostic results of CT angiography (CTA) and ultrasonography (US) on cervical artery disease and to evaluate the diagnostic value of CTA on cervical artery lesions.     Methods    A retrospective study was on the results of CTA

US and DSA (digital subtraction angiography) simultaneously performed on 34 patients. Taking the diagnostic results of DSA as standard

those of CTA and US on the cervical artery disease were compared. The diseases of  arteries were classified according to the findings from CTA and US to understand the sensitivity

accuracy

specificity

positive predictive value and negative predictive value of CTA and US.     Results    In a total of 272 vessels of 34 patients

the number of atheromatous plaques of  arteries

arterial stenosis

arterial occlusion

tenuous arteries and aberrant arteries was respectively 106

41

11

14

5 by DSA (totally 177 lesions)

and 100

39

11

14

5 by CTA (totally 169 lesions) and 94

33

9

13

1 by US (totally 150 lesions). Significant difference was found between CTA and US in the detection of cervical artery diseases (P0.05) and CTA had higher sensitivity and specificity than US in the detection of cervical artery diseases. US was unsatisfied in detecting the lesions at the origin of arteries.     Conclusion    Spiral 16-slice CTA is more reliable than US in evaluating the lesions in cervical arteries due to its high sensitivity and specificity

and can repalce DSA.