BACKGROUND፡ The thyroid, along with the breast, lung, and bone marrow, is among most radiosensitive organs. This study aims to assess rate of unnecessary radiation exposure thyroid gland in patients who had chest Computed Tomography (CT) at a large teaching hospital. 
 METHOD: Hospital-based retrospective cross-sectional on 1,306 underwent CT from July 2018 January 2019. Thyroid inclusion ...