Objective To study the role of extra-anatomic arterial bypass grafting in the management of aorta-iliac occlusive disease. Methods Forty-one cases of aorta-iliac occlusive disease managed by extra-anatomic arterial bypass grafting were retrospectively analyzed. Clinical features included claudicafion 11, resting pain 12 and ulcer/gangrene 18 patients. Axillofemoral bypass was performed in 15 cases with aortic and bilateral iliac artery occlusion, femorofemoral bypass in 18 cases with unilateral iliac occlusion and femoro-cnntralateral popliteal bypass in 8 cases with iliac and ipsilateral femoral artery occlusion. Results Postoperatively, clinical features were reheved in 40 cases (97.6%). Ankle brachial index increased significandy from 0.41 ± 0.15 to 0.89 ± 0.21 perioperatively (P < 0.05 ).Thirty-five cases were followed up for 1 year to 5 years. The overall graft patency rates in this series were 93%, 86% and 80% in 1, 3 and 5 years, respectively. Conclusion Extra-anatomic arterial bypass has merits as less invasive and rapid postoperative recovery, and this is one of the effective methods for the treatment of aorta-iliac occlusive disease.

Objective To explore the scan technique and image quality of coronary artery imaging with dual-source CT without oral Betaloc preparation.Methods Plain and enhanced dual-source CT coronary artery imaging without oral Betaloc preparation was performed in 215 patients with clinically suspected coronary heart disease or early-stage coronary lesions.Calcium scoring with plain scan images and multi-planar reconstruction(MPR),maximum intensity projection(MIP)and volume rendering technique (VRT)reconstruction with enhanced scan images were made in all cases.The scan technique and post reconstruction experience was summarized.The image quality was classified as three grades,and coronary segments classified according to AHA standards were evaluated.Results The median of calcium score of the 215 cases was 82.2(2.3—1827.9).The average heart rate of the enhanced scan was(80.6?15.3) (57—139)bpm.The post reconstruction methods with which coronary segments could be shown as best as possible consisted of(1)multiphases screening methods,(2)bi-phase or multiple-phase complement method,and(3)premature beat removing or arrhythmia shifting method.Altogether 3026 coronary segments were evaluated,among them 97.5% were evaluated as grade 1 image quality,2.0% were evaluated as grade 2 and 0.5% were evaluated as grade 3.The coronary segments in 91 cases were completely normal, while 112 segments with