The study investigated the possibilities of spiral CT with advanced multiplanar reconstruction in determining the stage of pneumoconiosis. The research included 65 patients with confirmed pneumoconiosis divided into three groups according to severity (42 patients in stage I, 16 in stage II and 7 in stage III). The researchers measured three parameters: the ratio of bronchial wall thickness to diameter (WT/D), vascular bifurcation angle variation index (AVI) and peribronchial fractal dimension (FD). Combining all three parameters achieved a high diagnostic efficiency with a sensitivity of 92.3% and a specificity of 88.6%, thus surpassing the individual parameters. The group of patients in stage III showed significantly higher values of all three measured parameters compared to the group in stage I. The reliability of the measurements was high, with the intraclass correlation coefficient for WT/D measurements reaching 0.923 and the diagnostic agreement for stage III was 100%. The conclusion of the study states that multiplanar reconstruction technology can objectively quantify structural changes in the lungs in pneumoconiosis and provide a reliable basis for clinical staging.