Study on suitability of chest CT post-processing images for diagnosis of pneumoconiosis
LIU Chang
YANG Ming
WANG Qiang
BAI Jing
ZHANG Ningning
DUAN Zheng
DONG Huitai
Abstract：Objective To select the chest CT image pattern suitable for the diagnosis of pneumoconiosis.Methods 74 cases of pneumoconiosis with DR and MSCT data(67 cases with small circular shadow and 6 cases with small irregular shadow)were selected as research objects.The 1.5 mm and 5.0 mm axial reconstructed CT images,1.0 mm and 5.0 mm coronal MPR im-ages,5.0 mm coronal MIP images,and DR images were compared and analyzed.Results Among the 5 chest CT modes,the coronal MPR image of 5.0 mm chest CT was more advantageous.There was no statistical significance in the size and profusion of small circular shadow between 5.0 mm coronal MPR image and DR image(P>0.05),and the Kappa values of consistency test were 0.70 and 0.64,respectively,showing general consistency.There was no significant difference in the detection rate of Class B large shadow(P>0.05),and the Kappa value of consistency test was 0.92,indicating a good consistency.Conclusion 5.0 mm coronal MPR image is suitable and feasible as chest CT image for diagnosis of pneumoconiosis.GBZ70-2015 can not be di-rectly used to determine the degree of small circular shadow set in chest CT.
Keywords：PneumoconiosisSmall round shadowsProfusionDigital radiographyTomographyX-ray computed
Publication Date：2025-02-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 39-42,47 )