Objective    To evaluate the clinical value of intravascular ultrasound (IVUS) in diagnosis and intravascular interventional therapy of peripheral arteriostenosis.     Methods    Ninety-four inpatients [58 males and 36 females

aged 26 to 77 (58.4±18.3)

]

with peripheral arteriostenosis who received diagnosis and treatment in Southwes

t Hospital

China

from Oct. 2006 to Sep. 2010 were enrolled. The patients were divided into a DSA group [43 patients examined with digital subtraction angiography (DSA)

]

and a DSA+IVUS group (51 patients examined with DSA plus IVUS). The examination results were compared. Stents were implanted under the guidance of DSA and IVUS

and the stent implantation effects were observed. General ultrasound and CTA follow-up were carried out. DSA and IVUS examination were conducted after the operation if necessary.     Results    In DSA+IVUS group

77 sites of stenotic vessels were detected with DSA

including 42 eccentric stenosis sites and 35 concentric stenosis sites; 82 sites of stenotic vessels were detected with IVUS

including 63 eccentric plaques and 19 concentric plaques. The diameter stenosis rate measured with IVUS [(67.1±12.2)%

]

was significantly higher than that measured with DSA [(54.5±11.4)%

]

(

P

<

0.05). The area stenosis rate measured with IVUS [(89.3±12.3)%

]

was significantly higher than that measured with DSA [(77.1±13.1)%

]

(

P

<

0.05). Stent implantation was successfully used to treat 82 sites of angiopathy in DSA+IVUS group and 53 sites in DSA group. After 3- to 48-month follow-up

the restenosis rate of DSA group (15.1%

8/53) was significantly higher than that of DSA+IVUS group (3.7%

3/82) (

P

<

0.05).     Conclusion    As compared with DSA

IVUS can judge pathological nature and stenosis severity more precisely

and can guide and evaluate stent implantation more effectively.