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目的:探讨能谱CT成像定量分析在鉴别诊断周围型肺癌和肺炎性肿块中的价值。方法:研究对象选择2011年7月至2015年2月在我院进行治疗的肺部孤立肿块患者共84例,将其分为周围型肺癌组38例和肺炎性肿块组46例,对所有患者进行能谱CT成像定量分析,观察其检查结果,分析其诊断价值。结果:静脉期下周围型肺癌在不同ke V的CT值均明显高于肺炎性肿块组,两组比较具有显著差异(P<0.05),动脉期下周围型肺癌在不同ke V的CT值均明显高于肺炎性肿块组,两组比较具有显著差异(P<0.05),周围型肺癌的碘浓度与能谱斜率在动静脉期与肺炎性肿块具有显著差异(P<0.05),而水浓度无显著差异(P>0.05)。结论:采用能谱CT成像定量分析对于周围型肺癌和肺炎性肿块的鉴别诊断准确性较高,具有良好的临床价值。
Objective: To investigate the value of quantitative CT imaging in the differential diagnosis of peripheral lung cancer and pneumonia. Methods: A total of 84 patients with isolated lung lumps treated in our hospital from July 2011 to February 2015 were selected and divided into 38 cases of peripheral lung cancer group and 46 cases of pneumococcal tumor group. All patients Performing spectrum CT imaging quantitative analysis, observing the test results, analysis of its diagnostic value. Results: The CT values of the peripheral venous phase of the lower venous phase at different keV were significantly higher than those of the pneumonia group (P <0.05). The CT values of the lower circumferential venous wall of the arterial phase at different keV were (P <0.05). The iodine concentration and energy spectrum slope of peripheral lung cancer were significantly different between the arteriovenous phase and pneumonia (P <0.05), while the water concentration No significant difference (P> 0.05). Conclusions: Quantitative analysis with energy dispersive X-ray computed tomography has a high accuracy in differential diagnosis of peripheral lung cancer and pulmonary inflammatory mass and has good clinical value.