High Resolution CT (HRCT) is used to determine the size of the bronchus to the adjacent pulmonary artery in cases with bronchiectasis. HRCT scanning also helps in finding the status of the surrounding lung tissue and excludes other lesions such as neoplasms.Multi-detector helical CT imaging is more advanced technique than High Resolution CT imaging in detecting the presence and extent of Bronchiectasis.CT and HRCT images of the lungs visualize cylindrical, varicoid, and cystic pathological grades of bronchiectasis. The bronchus must be imaged on CT in the long axis to distinguish cylindrical from varicoid.The CT helps to visualize lack of tapering of the bronchial lumen, bronchial wall thickening, bronchial dilation, peripheral bronchi and mucus plugging. Angiography combined with MSCT is used in cases with hemoptysis.