IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-12-3-46966 Original Research Paper An Analogy of HRCT Chest and Antigen Assay with RT- PCR Test in the Diagnosis of COVID-19 Janani Moorthy Dr. Dr. Vinoth Thangam Dr. Dr. Saranya Ayyadurai Dr. Dr. Rajani Dr. March 2023 12 3 01 02