电子束CT在共同动脉干诊断中的应用

目的探讨电子束CT(EBCT)在共同动脉干(TA)诊断中的应用价值。方法全组共10例TA患者，年龄2个月至24岁。EBCT检查采用美国Imatron C-150型扫描机进行对比剂增强扫描并做出诊断。将同一患者EBCT检查结果和超声心动图(UCG)(10例)、心血管造影(3例)检查结果及手术所见(1例)进行比较分析。结果EBCT对10例TA均做出定性诊断和分型诊断。UCG对9例做出定性诊断，5例与EBCT分型诊断一致。EBCT对TA并发畸形显示优于UCG。3例行心血管造影的患者中，1例造影诊断与EBCT诊断一致，2例分型诊断有误。1例根据EBCT和右心导管检查结果完成手术。结论EBCT作为1种无创检查技术，完全能够完成TA的诊断及分型，结合UCG和必要的右心导管检查的结果，可以指导手术。

Clinical application of electron beam computed tomography in diagnosis of truncus arteriosus

Objective To evaluate value of electron beam computed tomography (EBCT) in diagnosis of truncus arteriosus (TA). Methods Ten cases of TA with age ranging from 2-month to 24 years were studied. All cases were examined and diagnosed with Imatron C-150 scanner using contrast media. The results of EBCT were analyzed and compared with the results of echocardiography (in 10 cases), cardiovascular angiography (in 3 cases) and surgery findings (in 1 case). Results EBCT yielded qualitative diagnosis and classification in all 10 cases. Echocardiography revealed qualitative diagnosis in 9 cases, however its classification was accordant to EBCT just!in 5 cases. The concomitant abnormalities of TA were found more with EBCT than that with echocardiography. Cardiovascular angiography was performed in 3 cases, yielding inaccurate classification 2 cases. One case of TA was operated just based on the results of echocardiography, EBCT and catheterization. Conclusion As a noninvasive method, EBCT could yield qualitative diagnosis of TA as well as classification. The results of EBCT examination combining echocardiography and catheterization could guide the operations.