ROLE OF HIGH RESOLUTION COMPUTED TOMOGRAPHY IN THE EVALUATION OF INTERSTITIAL LUNG DISEASES

Abstract

Background: Interstitial lung diseases are classified into those with known causes and with unknown causes. Those with known causes include Connective tissue disease associated ILD, Pneumoconiosis, Drug-induced, Smoking-related ILD, Radiation-induced and Toxic inhalation–induced ILD. Those with unknown causes include Idiopathic pulmonary fibrosis, Sarcoidosis, Pulmonary lymph a goalie myomitosis and pulmonary alveolar protein sis. Amis: To utilize HRCT in evaluation of pulmonary interstitium in patients having clinical features of interstitial lung diseases. To compare the accuracies of chest radiography and HRCT in the prediction of specific diagnosis of interstitial lung disease. Material and methods: Hospital based observational study. CT section at Dept. Of Radio diagnosis, Medical College Kolkata (Philips brilliance 16 slice) and EKO diagnostics at Medical College, Kolkata. Dept. Of Radio diagnosis, Medical College, Kolkata. January 2018 to June 2019. Result: 2(4.0%) patients had ≤30 years of age, 9(18.0%) patients had 31-40 years of age, 15(30.0%) patients had 41-50 years of age, 18(36.0%) patients had 51-60 years of age, 3(6.0%) patients had 61-70 years of age and 3(6.0%) patients had >70 years of age. Conclusion: HRCT is the most accurate non-invasive imaging modality for evaluation of lung parenchyma in the cases of interstitial lung diseases. The cross sectional perspective and high spatial resolution makes HRCT superior to chest radiography.