Perfusion lung scan with technetium-99m macroaggregated albumin. The 8 standard views are anterior, posterior, left anterior oblique (LAO), right posterior oblique (RPO), right anterior oblique (RAO), left posterior oblique (LPO), and right (RT) and left (LT) lateral. This perfusion scan is abnormal, showing multiple peripheral perfusion defects in both lungs. In the presence of a normal chest x-ray or normal ventilation scan, this perfusion scan indicates high probability for acute pulmonary embolism.
By permission of the publisher. From Kucher N, Goldhaber S, Sewell J, et al. In Bone's Atlas of Pulmonary and Critical Care Medicine . Edited by J Crapo. Philadelphia, Current Medicine, 2005.