Helical CT for Diagnosis of Aortic Dissection

本文的目的是在評估螺旋式電腦斷層攝影在診斷急性主動脈剝離的應用。在過去三年內，總共有102病人，因胸痛或在胸部素片有縱隔腔擴大，疑有主動脈剝離的現象而接受對比劑後的螺旋式電腦斷層攝影檢查。電腦掃描方法是切面厚度為5毫米或7釐米，切面間隔為5毫米，以注射器輔助靜脈注入70毫升（Hypaque 76%；78個病人）或100毫升（Conray 60%; 24個病人）顯影劑。檢查範圍是由胸部上緣切致橫隔膜，當胸部掃描完後，以螺旋式或傳統式掃描腹部以評估主動脈剝離的下緣。在102個病人中，根據手術結果，血管攝影，電腦斷層或經食道超音波檢查，有50個病人有主動脈剝離。分析結果，電腦斷層影像提供正確報告有100個病例，兩個不正確報告；有18人是”A”型主動脈剝離，有32人是”B”型主動脈剝離，CT對主動脈剝離診斷敏感性為100%，特殊性96%。因此，我們認為，高品質螺旋式電腦斷層攝影可以當成第一線影像評估急性主動脈剝離的病人。

關鍵字

主動脈，剝離；電腦斷層攝影，螺旋式

並列摘要

To assess the value of contrast- enhanced helical CT scanning in the diagnosis of acute aortic dissection, 102 patients who were suspected of acute aortic dissection and were underging helical CT scanning because of chest pain or an abnormal chest radiograph were studied. Immediately after completion of helical chest CT, non-helical or helical scans of the abdomen were also obtained to determine the inferior extent of the dissection. Of the 102 patients, 50 had aortic dissections based on findings from surgery, angiography, CT scans or transesophageal echocardiography. CT findings provided 100 correct reports and 2 incorrect reports. Eighteen patients had type A dissections and 32 patients had type B dissections. The sensitivity of CT scanning for acute aortic dissection was 100% and specificity was 96%. From this study, we believe that high-quality helical CT techniques can be useful as the primary imaging modality in the evaluation of acute aortic dissection.

並列關鍵字

Aorta, dissection ； Computed tomography CT, helical

國際替代計量

Helical CT for Diagnosis of Aortic Dissection

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