TRANCE技术在下肢动脉闭塞病变中的应用价值

Application value of TRANCE technology in lower limb arterial occlusive disease

目的:研究心电触发非对比增强MR血管成像(triggered angiography non-contrast enhanced,TRANCE)技术在下肢动脉闭塞病变中的应用价值。方法:随机选入22例可疑下肢动脉狭窄患者,先后进行TRANCE、数字减影血管成像(digital subtraction angiography,DSA)2种检查。将腹部至下肢血管分为腹主动脉、髂总动脉、髂外动脉、髂内动脉、股浅动脉、股深动脉、腘动脉、胫前动脉、胫后动脉、腓动脉10个部分,选取显示清晰的动脉段337段,进行同一部位不同检查方式的影像对照。结果:337处血管狭窄中,TRANCE、DSA 2种检查方式共有312处显示狭窄程度一致,TRANCE显示狭窄程度较DSA重的有16处,较DSA轻的有9处。而在中度狭窄以上动脉(≥50%)显示一致的有153处,TRANCE显示狭窄程度较DSA重的有15处,较DSA轻的有6处,2种检查方法的Kappa值为0.905。结论:TRANCE技术是一种无创、安全、无辐射的血管检查方式,可以应用于下肢动脉成像。

Objective To explore the application value of triggered angiography non-contrast enhanced（TRANCE）technology in diagnosing lower limb arterial occlusive disease. Methods Totally 22 lower limb arterial occlusive disease patients were randomly selected, and then underwent TRANCE and DSA examinations. The arteries from the abdomen to the lower limb were divided into abdominal aorta, common iliac artery, external iliac artery, internal iliac artery, superficial femoral artery, deep femoral artery, popliteal artery, anterior tibial artery, posterior tibial artery and peroneal artery. Totally337 sections displayed clearly were chosen to go through examinations by TRANCE and DSA. Results Of the 337 sections there were 312 ones with the same stenoses found by TRANCE and DSA, TRANCE found 16 sections with worse stenoses and 9 milder ones than by DSA. There were 153 sections with the same moderate stenoses（≥50%） displayed by TRANCE and DSA; Of the 153 sections, there were 15 ones with worse stenoses and 6 ones with milder stenoses found by TRANCE than by DSA. Kappa value of the two methods was 0.905. Conclusion TRANCE technology is a non-invasive, safe and nonradiative diagnosing method for the lower limb arterial occlusive disease.