关键词: 肺部超声, 诊断, 间质性肺病, 高分辨率CT, 一氧化碳弥散量

Abstract: This paper discussed the value of pulmonary ultrasound in the diagnosis of interstitial diseases, and analyzed the difference between ultrasonography and high-resolution CT (HRCT) and its clinical application value. All patients received lung ultrasonography and HRCT examination.A total of 127 patients with connective tissue diseases were selected for clinical research. According to the clinical diagnosis results, the patients were divided into the interstitial lung disease group (97 cases) and the non-interstitial lung disease group (30 cases). The detection rate of B-line, pleural thickening and pleural surface roughness in the interstitial lung disease group was significantly higher than that in the non-interstitial lung disease group, and the difference was statistically significant (P<0.05). The sensitivity of lung ultrasound in diagnosing patients with interstitial lung disease was 85.57%, the specificity was 80.70%,and the AUC value was 0.831.The sensitivity of HRCT in the diagnosis of patients with interstitial lung disease was 93.81%, the specificity was 87.72%, and the AUC value was 0.908.The value of lung ultrasonography in diagnosing interstitial diseases is similar to that of HRCT, but it has the advantages of simple operation and good consistency in evaluating the condition of patients.

Key words: lung ultrasound, diagnosis, interstitial diseases, high-resolution CT, carbon monoxide diffusion