Real-time three-dimensional ultrasonographic evaluation of the lower-extremity arteriosclerosis obliterans:compared with 64 multi-slice spiral CT 3D angiography

Objective To explore the value of real-time three-dimension (RT-3D) ultrasonography in quantitative and qualitative diagnosis of lower-extremity arteriosclerosis obliterans,and to compare RT-3D with 64 multi-slice spiral CT 3D angiography (3D-CTA). Methods Seventy patients with lower-extremity arteriosclerosis obliterans were examined by both RT-3D ultrasonography and 3D-CTA,and the results were analyzed comparatively. Results RT-3D ultrasonography and 3D-CTA displayed clearly the location of atherosclerotic plaques,the structure of vessel wall and the extent of the stenosis. RT-3D ultrasonography showed the echo and the mobility of plaque in the blood vessl. There was a high correlation between RT-3D ultrasonography and 3D-CTA in the rate of stenosis (86.52±2.30)% and (89.36±1.74)%,(r=0.90,P0.01),while the identification of plaques and the extent of stenosis with RT-3D ultrasonography and 3D-CTA had the better concordance according to the value of Kappa 0.80 (P0.05). Conclusion RT-3D ultrasonography can evaluate lower-extremity arteriosclerosis obliterans in quality. As a cheap,non-invasive evaluation method,RT-3D ultrasonography is of high clinical value in practice.