彩超、DSA、CTA及MRA在检测兔创伤性动脉瘤中的价值比较

Value comparison of color doppler ultrasound,DSA,CTA and MRA in the detection of the tramatic aneurysm of rabbit

目的:比较彩超、DSA、CTA及MRA在检测兔创伤性动脉瘤中的价值。方法:新西兰兔20只,应用显微外科手术建立兔股动脉动脉瘤(Pseudoaneurysm,PA)模型,于术后12d(术后7～11d股部形成搏动性包块)行彩超、DSA、CTA及MRA检查,比较其检查结果,并与尸检结果对照。结果:20只兔16只建模成功,尸检显示11个瘤体伴血栓形成。彩超、DSA、CTA及MRA检查,瘤体显示率均为100%,供养动脉显示率彩超为81.25%(13/16),另3种均为100%,瘤颈显示率分别为81.25%(13/16)、87.5% (14/16)、37.50%(6/16)及31.25%(5/16),血栓显示率分别为81.82%(9/11)、18.18%(2/11)、18.18%(2/11)及36.36%(4/11)。结论:在创伤性兔股动脉PA瘤体及供养动脉的显示上,彩超、DSA、CTA及MRA间差异无显著性意义,在瘤颈的显示上,彩超、DSA优于CTA及MRA,在瘤体内附壁血栓的显示上,彩超优于MRA、DSA及CTA。

Objective：To compare the value of color Doppler ultrasound（CDU）,DSA,CTA and MRA in the detection of the tramatic femoral pseudoaneurysm（PA） of rabbit. Methods：Femoral pseudoaneurysms were tried established in 20 New Zealand rabbits by mierosurgical technique. CDU,DSA,CTA and MRA were performed in all rabbits on 12 days after surgery and the findings of them were compared with the results of autopsy. Results：Models were made successfully in 16 rabbits. Eleven out of the 16 rabbits had developed thrombus in PA. The shown rates of the PA-body in CDU,DSA,CTA and MRA were all 100%. The shown rate of the PA-supply artery was 81.25%（13/16） in CDU and was 100% in all other three methods. The shown rates of the PA-neek were 81.25%（13/16）、87.5%（14/16）,37.50%（6/16）and 31.25%（5/16）while the shown rates of the lhrombus in PA were 81.82%（9/11 ）, 18.18%（2/11 ）, 18.18%（2/11 ） and 36.36%（4/11 ） in CDU,DSA,CTA and MRA, respectively. Conclusions：There are no significant difference in showing the PA-body and PA-supply artery in CDU,DSA, CTA and MRA. In showing the PA-neck,CDU and DSA are superior to CTA and MRA,while CDU is superior to DSA,CTA and MRA in showing the thrombus in PA. In addition,the blood dynamic changes of PA-body,PA-neck and PA-supply artery can be studied timely by CDU,so CDU has high value in the follow up of the patient with PA.