[Ultrasonic angiography in diagnosis of peripheral vascular disease].
The ability of Quickscan (QS) was studied to assess haemodynamically significant lesions in the iliac and femoro-popliteal arteries. Quickscan was prospectively and independently compared to digital subtraction angiography (DSA) of the iliac and femoro-poplited arteries. In 155 patients, 631 arterial segments were evaluated. A QS frequency ratio of greater than 1:3 had a sensitivity of 93% and a specificity of 85% in detecting stenosis > 50% diameter (75% area) reduction in the iliac artery as shown on DSA. The sensitivity and specificity for stenosis in the femoral and popliteal arteries were 85%, 96%, 82%, 98% respectively. In the detection of occlusion, QS had a sensitivity of 84% and a specifity of 98% in the iliac artery; 94%, 97%, in the femoral; and 94%, 85% in the popliteal arteries respectively. There was a significant correlation between the area reduction found by QS and the calf/brachial pressure index (CBI) (r = -0.77 P < 0.01). 35 patients underwent successfully angioplasty based on QS findings. We conclude that quickscan can provide an inexpensive, quick and noninvasive screening technique for the routine initial assessment of peripheral vascular disease.
Zhang
Q
Q
Department of Surgery, First Clinical College, China Medical University, Shenyang.
Duan
Z
Z
King
D H
DH
D000368:Aged; D015901:Angiography, Digital Subtraction; D005260:Female; D005263:Femoral Artery / Q000000981:diagnostic imaging*; D006801:Humans; D007083:Iliac Artery / Q000000981:diagnostic imaging*; D008297:Male; D016491:Peripheral Vascular Diseases / Q000000981:diagnostic imaging; D011150:Popliteal Artery / Q000000981:diagnostic imaging*; D012680:Sensitivity and Specificity; D018084:Ultrasonography, Interventional