Objective Explore the preliminary judgment of small pulmonary nodules by direct digital X-ray photography(digital radiography;DR)examination.Methods A total of 93 patients with pulmonary disease with nod-ule diameter＜20 mm from February 2023 to February 2024 were selected.All patients were diagnosed with DR diag-nosis,DR double subtraction(dual energy subtraction;DES),and CT and CT guided biopsy results as the gold stan-dard to compare the detection rate of the two diagnostic methods,the diagnostic efficacy of benign and malignant nod-ules,and the image quality.Results The detection rate of DES diagnosis diameter 10mm were higher than that of DR diagnosis,statistically significant(P＜0.05).The sensitivity,specificity,accuracy,positive predictive value and neg-ative predictive value of DES differentiation diagnosis between benign and malignant nodules were all higher than DR diagnosis.DR diagnosis Kappa value=0.37 and DES diagnosis Kappa value=0.86.The image quality of DES diagno-sis and rib overlapping nodules was higher than DR diagnosis,statistically significant(P＜0.05);DES diagnosis com-pared with DR diagnosis(P＞0.05).Conclusion Compared with DR,DES can diagnose small pulmonary nodules,which can not only improve the diagnostic accuracy,but also contribute to the differential diagnosis of benign and ma-lignant nodules.
关键词
直接数字化X射线摄影/肺部小结节/图像质量/双能减影技术
Key words
Direct digital X-ray photography/Small pulmonary nodules/Image quality/Dual-energy sub-traction technique
维普
万方数据