多层螺旋CT在肺动脉栓塞中的诊断价值

目的：探讨多层螺旋CT在肺动脉栓塞中的诊断价值。方法16例肺动脉栓塞患者均使用多层螺旋CT行平扫以及造影增强扫描，采集图像。结果图像显示患者有栓塞肺动脉98支，其中肺动脉干及左、右肺动脉4支，叶肺动脉26支，段肺动脉28支以及亚段肺动脉40支；直接征象为中心型充盈缺损有7支，占7.1%，偏心型充盈缺损有79支，占80.6%，附壁环型充盈缺损有8支，占8.2%，闭塞型充盈缺损有4支，占4.1%；间接征象为双肺见斑片状渗出灶及实变影2例，纤维条索影11例，伴胸腔少量积液3例，患者的间接征象表现为肺灌注不均。结论多层螺旋CT在肺动脉栓塞的诊断中效果显著，同时具有快速、有效及无创伤等特点，在临床诊断中具有重要意义。

Diagnostic value of multi-slice spiral CT in pulmonary embolism

Objective To investigate the diagnostic value of multi-slice spiral CT in pulmonary embolism.Methods A total of 16 patients with pulmonary embolism all received multi-slice spiral CT and contrast enhancement scan to collect images.Results Images showed that there were 98 embolism pulmonary arteries, including 4 pulmonary trunks and left and right pulmonary arteries, 26 leaf pulmonary arteries, 28 segmental pulmonary arteries, and 40 sub-segmental pulmonary arteries. There were 7 center type filling defects shown by direct signs accounting for 7.1%, 79 eccentric type filling defects accounting for 80.6%, 8 wall attached ring filling defects accounting for 8.2%, and 4 block type filling defects accounting for 4.1%. There were 2 cases with patchy exudation and consolidation shadows in both lungs shown by indirect signs, 11 cases with ribbon epitomes, and 3 cases with a small amount with pleural effusion, which shown the uneven perfusion by indirect signs.Conclusion Multi-slice spiral CT has remarkable effect in the diagnosis of pulmonary embolism, and has rapid, effective and non-invasive characteristics. It has important significance in clinical diagnosis.