16层螺旋CT肺动脉造影对肺栓塞诊断的应用价值

目的探讨16层螺旋CT在肺动脉栓塞中临床应用价值。方法选择肺动脉栓塞患者36例,所有患者均接受胸部CT及肺动脉造影检查,分析16排螺旋CT对肺动脉显影及肺栓塞显示情况,观察肺动脉栓子的类型、分布和数量。结果1.16排螺旋CT共显示肺动脉干、左/右肺动脉、肺叶、段、亚段及以下动脉1787支,肺动脉栓塞429支,栓塞率为24.01%,其中肺叶动脉比例最高,为38.79%,肺动脉干比例最低,为7.50%。在肺动脉栓塞栓子类型方面,Ⅱ型栓子数量最多,为202处,其次为Ⅳ型,共118处,Ⅲ型数量最少,为31处。其直接征象为充盈缺损,间接征象包括肺纹理稀疏、肺梗死、westemark征及肺动脉高压、胸腔积液、心包积液及胸膜增厚等。结论 16排螺旋CT能够清晰显示肺动脉栓塞的特点,在其诊断和鉴别诊断中具有较高的应用价值。

Clinical value of 16-slice spiral CT in the diagnosis of pulmonary embolism

Objective To investigate the value of 16 - slice CT in the diagnosis of pulmonary embolism. Methods 36 patients with pulmonary embolism were selected in this study. They were all given chest CT and pulmonary angiography to analyze the influence of 16-slice spiral CT to pulmonary developing and pulmonary embolism. The type, distribution and quantity of pulmonary cmbali were ob- served between the two groups. Results 16-slice spiral CT showed 1787 rami of pulmonary trunk, left/right pulmonary artery, lung lobe, segment and sub-segment and the following arterial, and 429 rami of pulmonary embolism. The rate of embolism was 24.01% , which lo- bar arteries took the highest proportion of 38.79% and pulmonary trunk took the lowest percentage of 7.50%. The pulmonary embolism emboli type included 202 type Ⅱ emboli, followed by 118 type Ⅳ cmboli, 31 type Ⅲ emboli. Its direct sign was filling defects, and its indirect signs included sparse lung markings, pulmonary infarction, Wcstemark sign and pulmonary hypertension, pleural effusion, peri- cardia｜ effusion, and pleural thickening. Conclusion 16-slice spiral CT can clearly show the characteristics of pulmonary embolism, which has a higher value in the diagnosis and differential diagnosis of patients with pulmonary embolism.