64排螺旋CT下肢血管成像技术与DSA评估动脉狭窄的效果对比研究

目的探讨64排螺旋CTA评估下肢动脉狭窄闭塞性疾病的效果。方法对43例下肢动脉闭塞性疾病患者行64排螺旋CTA扫描，18例一周后行双下肢DSA检查，将每侧下肢血管分成8段，动脉狭窄程度分为：正常、轻度狭窄、中度狭窄、重度狭窄、闭塞5个级别。并以DSA为标准来评估。结果对18例患者双侧下肢共288段血管进行研究，CTA与DSA对血管狭窄程度显示一致的有275段，被CTA高估有ll段血管，低估有2段血管。结论64排螺旋CTA是下肢动脉狭窄硬化性疾病可靠的评估方法。

Comparative Assessment on Artery Stenosis of Lower Extremity Vascular with 64 -slice Spiral CT Angiography and DSA

Objective To investigate the 64 - slice spiral CTA for assessment on lower extremity arterial occlusive disease narrowly. Methods 43 patients with lower extremity arterial occlusive disease were received 64 - slice spiral CTA scan, 18 of them received DSA examination of both lower extremities a week later, lower limb blood vessel on each side were be divided into 8 segment, the degree of arterial stenosis is divided into： normal, mild stenosis, moderate stenosis, severe stenosis, blocking , 5 level, look DSA as a standard to assess. Results Study on 18 cases of patients with bilateral lower limb a total of 288 segment vessels, CTA and DSA of the blood vessels narrow extent show the same paragraph 275 segments, 11 segment blood vessels have been over - estimated by CTA, 2 segment blood vessel have been underestimated by CTA. Conclusion The 64 - slice spiral CTA is reliable method of assessment on the lower extremity artery stenosis sclerosis disease.