Fig. 2From: Added value of hyperdense lumen sign in prediction of acute central and peripheral pulmonary embolism on non-contrast CT chesta Axial CTPA image. b Axial non-contrast image shows a case of acute pulmonary embolism with hyperdense thrombus seen at right distal main pulmonary artery (white arrows).and left lower sub-segmental peripheral branch (yellow arrows) with corresponding filling defect at CTPABack to article page