双源CT低管电压联合高级迭代重建技术对肺癌的诊断价值分析

目的 评价双源CT低管电压联合高级迭代重建技术(advanced modeled iterative reconstruction algorithm,AD-MIRE)的图像质量及辐射剂量,探讨该技术对肺癌的诊断价值.方法 选取我院行胸部双源CT检查的肺癌患者共42例,分为实验组及对照组各21例.实验组采用管电压为90...

Analysis of the diagnostic value of dual-source CT low-tube voltage combined with advanced iterative reconstruction technique in lung cancer

Objective To evaluate the image quality and radiation dose of dual-source CT low-tube voltage combined with advanced iterative reconstruction technique(advanced modeled iterative reconstruction algorithm,ADMIREEE),and to explore the diagnostic value in lung cancer.Methods All of 42 patients with lung tumors who underwent chest dual source CT examination in our hospital from December 2019 to June 2020 were selected,with 21 cases in the experimental group and 21 cases in the control group.The experimental group was scanned with 90 kV tube voltage and the image was reconstructed by ADMIREE,while the control group was scanned by conventional 120 kV,and the image was reconstructed by conventional inverse filter projection.The noise,signal-to-noise ratio and radiation dose of the two groups were compared,and the sensitivity,specificity,positive predictive value,negative predictive value and Jordan index of lung cancer were compared between the two groups(P<0.05).Results There was no significant difference in image quality between the experimental group and the control group,but the radiation dose decreased significantly in the experimental group.There was no significant change in the diagnostic accuracy,sensitivity and specificity of lung cancer between the experimental group and the control group.Conclusion Dual-source CT low tube voltage combined with advanced iterative reconstruction technique can reduce the radiation dose of patients without affecting image quality and diagnostic confidence.