Comparative analysis of small shadow morphology between chest CT and DR images of patients with occupational pneumoconiosis
10.20001/j.issn.2095-2619.20240610
- VernacularTitle:职业性尘肺病患者胸部CT与DR影像小阴影形态对比分析
- Author:
Zhongxue LI
1
;
Xiazi ZHAO
;
Yongzhong TANG
;
Qianchang LI
;
Shiwen HUANG
;
Feifei LI
;
Xiaoping LI
;
Kunhai QIU
Author Information
1. Guangxi Zhuang Autonomous Region Institute of Occupational Disease Prevention and Control, Nanning, Guangxi 530021, China
- Publication Type:Journal Article
- Keywords:
Pneumoconiosis;
Small shadow;
Morphology;
Digital radiography;
Computed tomography;
Consistency
- From:
China Occupational Medicine
2024;51(3):303-307
- CountryChina
- Language:Chinese
-
Abstract:
Objective To compare the morphology differences in small shadows of occupational pneumoconiosis (hereinafter referred to as "pneumoconiosis") between computed tomography (CT) and digital radiography (DR) imaging. Methods A total of 1 010 pneumoconiosis patients were selected as the research subjects using a judgment sampling method. Chest DR imaging and CT imaging were performed on patients, and the differences in small shadow morphology between the two images were compared. Results In both DR and CT images of patients, circular small shadows identified as p, q, and r shapes accounted for 76.2%, 11.5%, and 1.3%, respectively, while irregular small shadows were identified in 1.8% of cases. There was medium high consistency between DR and CT in detecting these four types of small shadow morphology (Kappa=0.72, P<0.01). The detection rate of irregular small shadows (including interlobular septal thickening, ground-glass opacity, and/or centrilobular emphysema) by CT images was 54.0% (545/1 010), with 88.6% (483/545) of these cases also showing small circular shadows. Irregular small shadows in CT images were mostly identified as p small circular shadows in DR images, accounting for 88.8% (484/545). The results of DR and CT images for p/p, p/q, q/p, q/q, q/r, r/q and r/r in small circular shadows showed medium high consistency (Kappa =0.52, P<0.01). Conclusion The results of CT and DR imaging for pneumoconiosis with small shadow were of medium high consistency, with CT demonstrating advantages in detecting irregular small shadow morphology of pneumoconiosis. CT images can be used to describe the shape of circular small shadow as DR images, and irregular small shadow can be described as interlobular septal thickening, ground-glass opacity, and/or centrilobular emphysema.
