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目的 探讨联合应用多层螺旋CT肺动脉造影(MSCTPA)和间接CT静脉造影(CTV)诊断静脉血栓栓塞症 (VTE)的价值。资料与方法 对临床疑似VTE的87例患者,联合应用MSCTPA和间接CTV进行检查,在胭静脉至 股总静脉水平,比较间接CTV与多普勒血管超声(DVUS)诊断深静脉血栓形成(DVT)的价值,计算间接CTV的敏感 性、特异性、阴性预测值和阳性预测值。结果 87例患者中,MSCTPA扫描肺血栓栓塞症(PTE)和DVT均显示32 例,显示DVT未显示PTE 8例,显示PTE未显示DVT 22例。DVUS检查中,DVT 42例。与DVUS相比,下肢间接CTV 诊断DVT的敏感性95．5％、特异性99．2％、阳性预测值97．7％、阴性预测值98．5％。结论 联合应用MSCTPA和 间接CTV实现了一次检查同时诊断PTE和DVT,并能显示胸部和下肢的其他异常。
Objective To investigate the value of multi-slice spiral CT pulmonary angiography (MSCTPA) and indirect CT venography (CTV) in the diagnosis of venous thromboembolism (VTE). Materials and Methods Eighty-seven patients with clinically suspected VTE were enrolled in this study. MSCTPA and indirect CTV were used in combination to detect deep venous thrombosis (DVT) in indirect venous thrombosis and intravenous CTV compared with indirect CTV and Doppler ultrasound. The sensitivity, specificity, negative predictive value and positive predictive value of indirect CTV were calculated. Results Of 87 patients, MSCTPA scan of pulmonary thromboembolism (PTE) and DVT showed 32 cases, showing that DVT did not show PTE in 8 cases, showing PTE did not show DVT in 22 cases. DVUS examination, DVT 42 cases. Compared with DVUS, the indirect CTV diagnosis of lower extremity DVT sensitivity 95.5%, specificity 99.2%, positive predictive value 97.7%, negative predictive value 98.5%. Conclusions The combined use of MSCTPA and indirect CTV enabled a single examination to simultaneously diagnose PTE and DVT, as well as reveal other abnormalities in the chest and lower extremities.