Hemoptysis is the expectoration of blood that originates from the lower respiratory tract. Itis usually a self-limiting event but in fewer than 5% of cases it may be massive, representingalifethreateningconditionthatwarrantsurgentinvestigationsandtreatment.Multidetectorcomputed tomography (MDCT) angiography is a useful examination to detect the source ofthebleedinginpatientswithhemoptysis. TheaimofthestudywastostudytheroleofMDCTaortograminevaluationofpatientswithmild,moder ateorseverehemoptysis