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目的:研究16排螺旋CT在肺动脉栓塞诊断中的应用价值;方法:选择2014年6月-2015年5月在我院行16排螺旋CT诊断的肺动脉栓塞患者30例,男21例,女9例,以16排螺旋CT检查,观察肺动脉栓塞的影像学特征;结果:肺段以上动脉内存在位置不同的充盈缺损22例,其中14例患者表现为高密度造影剂将栓子包绕在中央,当扫描层面与血管的走行方向平行时,呈现较为明显的“双轨征”。8例患者肺段以上动脉不规则变窄,不光滑的一面是低密度栓子,光滑的一面是高密度造影剂。4例患者表现为管腔闭塞,其特征为血管内的高密度造影剂突然中断,并且近端的管腔明显扩张。6例患者出现附壁血栓,主要征象为高密度造影剂与低密度栓子相伴出现,且动脉无显著变化。10例患者存在肺动脉高压,其主要征象为肺动脉主干显著价款,直径>29mm。19例患者伴有胸腔积液。6例患者出现“马赛克”征,其征象为肺纹理局限性稀疏;结论:16排螺旋CT可准确诊断肺动脉栓塞,具有较高的应用价值,值得应用于临床。
Objective: To study the value of 16-slice spiral CT in the diagnosis of pulmonary embolism. Methods: Thirty patients with pulmonary embolism diagnosed by 16-slice spiral CT in our hospital from June 2014 to May 2015 were selected. There were 21 males and 9 females Cases, 16-slice spiral CT examination to observe the imaging features of pulmonary embolism; Results: there are 22 different filling defects in the artery above the pulmonary artery segment, of which 14 patients showed high-density contrast agent emboli around the center , When the scan level and the blood vessels parallel to the direction of travel, showing a more obvious “double-track sign.” Eight patients had irregular narrowing of the artery above the pulmonary artery, low-density emboli on the non-smooth side, and high-density contrast on the smooth side. Four patients manifested as lumen occlusion, which was characterized by a sudden interruption of high-density intravascular contrast agents and a marked expansion of the proximal lumen. 6 cases of patients with mural thrombus, the main signs of high density contrast agents and low density emboli appear accompanied by no significant change in the arteries. 10 patients with pulmonary hypertension, the main signs of pulmonary artery significant price, diameter> 29mm. 19 patients with pleural effusion. 6 patients showed “Mosaic ” signs, signs of sparse lung texture limitations; Conclusion: 16-slice spiral CT can accurately diagnose pulmonary embolism, has high value, it is worth to apply in clinical.