Objective    To investigate the clinical value of 64-slice CT angiography for diagnosing arteriosclerotic occlusive disease (ASO) of lower extremities.     Methods    Fifty-nine patients clinically suspected as ASO of lower extremities were examined by performing CT angiography on a 64-slice scanner. The image data were processed with different techniques of three-dimensional reconstruction

such as volume rendering (VR)

maximum intensity projection (MIP)

curved planar reformation (CPR)

advanced vessel analysis (AVA) on AW 4.1 workstation

and generally analyzed based on the original axial images.     Results    The image display of reconstructed blood vessels of the lower extremities of 59 patients was quite good. Four patients were diagnosed free of ASO

and 55 patients exhibited discontinued sclerosis or block of lower extremity arteries around which were plenty of blood-supply peripheral arteries.     Conclusion    64-slice CT angiography can display the features of lower extremity arteries clearly

such as vasiform

arterial stenosis degree

occlusion and calcified plaque. It is valuable in diagnosing and screening ASO of lower extremities.