AIMS AND OBJECTIVES • To diagnose interstitial lung diseases using HRCT and Chest X–Ray. • To study and compare the different radiographic patterns evident in both conventional chest radiography and HRCT MATERIAL AND METHOD • The present study was a prospective and observational (non interventional) type of study. This study aims evaluating patients coming to the radiology department of Dhiraj general hospital, by using X–RAY and CT scan so as to achieve aims and objectives outlined. CONCLUSION In our study 48 patients were radiologically evaluated with X Ray and CT–Scan • Chest x– ray is a primary modality used to screen patients with lung pathologies, being cheap, easy to perform and requires less radiation. • HRCT is the modality of choice for diagnosis of interstitial lung diseases.