Application of CT radiomics in investigating the anatomical basis of chronic dacryocystitis
Objective:To explore the relevant anatomical factors in the pathogenesis of chronic dacryocystitis based on CT radiomics.Methods:A retrospective analysis was conducted on the general data and sinus CT materi-als of 85 patients with chronic dacryocystitis(case group)admitted to our department from December 2020 to De-cember 2023,and 85 individuals undergoing physical examination(control group)during the same period.The differences in anatomical parameters between the two groups were compared to study the morphological character-istics of the nasolacrimal duct in patients with chronic dacryocystitis.Univariate and multivariate logistic regres-sion analyses were used to explore the relevant anatomical factors in the pathogenesis of chronic dacryocystitis.Results:There were statistically significant differences(P＜0.05)in the proportion of combined nasal septal devia-tion,the distance between the anterior and posterior ridges of the lacrimal fossa,the angle between the long axis of the nasolacrimal duct and the projection on the midsagittal plane,the maximum transverse diameter of the bony nasolacrimal duct,the maximum cross-sectional area of the bony nasolacrimal duct,and the thickness of the fron-tal process of the maxilla between the two groups.There were no statistically significant differences(P＞0.05)in whether there was a combined high-position nasal septal deviation,whether there was a combined non-high-posi-tion nasal septal deviation,and whether there was a combined pneumatized middle turbinate.Multivariate analysis showed that nasal septal deviation,the distance between the anterior and posterior ridges of the lacrimal fossa,the angle between the long axis of the nasolacrimal duct and the projection on the midsagittal plane,and the maximum cross-sectional area of the bony nasolacrimal duct are independent anatomical factors affecting the pathogenesis of chronic dacryocystitis.Conclusion:Nasal septal deviation,a large distance between the anterior and posterior rid-ges of the lacrimal fossa,a large angle between the long axis of the nasolacrimal duct and the projection on the midsagittal plane,and a small maximum transverse diameter of the bony nasolacrimal duct are important anatomi-cal bases for the pathogenesis of chronic dacryocystitis,providing a basis for an in-depth understanding of the dis-ease occurrence.
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