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目的:探讨多层螺旋CT对尘肺患者不同分期中主肺动脉血流动力学变化的评估价值。方法:选取我院收治的100例尘肺患者作为研究组,同时选取30例健康人群作为对照组。对所有人员进行X线胸片及多层螺旋CT检测,对比分析不同分期尘肺患者及健康人群的主肺动脉直径、平均流速、血流峰值和单位时间内流量等参数。结果:健康人群的肺动脉平均流速、血流峰值及单位时间内流量明显高于尘肺患者,且尘肺患者的肺动脉平均流速、血流峰值及单位时间内流量与尘肺分期成反比,差异具有统计学意义(P<0.05),健康人群的主动脉直径明显低于尘肺患者,且尘肺患者动脉直径尘肺分期成正比,差异具有统计学意义(P<0.05);多层螺旋CT的阳性检出率明显高于X线胸片,差异具有统计学意义。结论:多层螺旋CT扫描可有效检测不同分期尘肺患者主肺动脉血流动力学变化情况,可为尘肺分期提供有效参考资料。
Objective: To evaluate the value of multislice spiral CT in evaluating the hemodynamic changes of the main pulmonary artery in patients with pneumoconiosis. Methods: 100 cases of pneumoconiosis admitted to our hospital were selected as the research group, and 30 healthy people were selected as the control group. All patients were examined by X-ray and multi-slice spiral CT. Parameters such as diameter of pulmonary artery, mean flow velocity, peak blood flow and flow rate per unit time were compared among pneumoconiosis patients and healthy population. Results: The average velocity of pulmonary artery, peak blood flow and the flow rate per unit time in healthy population were significantly higher than those in patients with pneumoconiosis. The average velocity of pulmonary artery, peak flow and unit flow in pneumoconiosis were inversely proportional to pneumoconiosis stage, the difference was statistically significant (P <0.05). The diameter of aorta in healthy population was significantly lower than that in patients with pneumoconiosis, and the diameter of pneumoconiosis was proportional to pneumoconiosis (P <0.05). The positive rate of MSCT was significantly higher In X-ray, the difference was statistically significant. Conclusion: Multi-slice spiral CT scan can effectively detect hemodynamic changes of main pulmonary artery in patients with different stages of pneumoconiosis, which can provide effective reference data for pneumoconiosis stage.