The following table or figure may be downloaded to PowerPoint for personal use in teaching and presentations. This feature is available to all subscribers to the journal.

You MUST read and follow the guidelines at Request to Reproduce AJR Content if you are distributing or using AJR content beyond academic use (limited distribution, non-revenue producing, or educational purposes).

(Downloading may take up to 30 seconds.
If the slide opens in your browser, select File -> Save As to save it.)

Fig. 2A. —63-year-old man with dyspnea for 24 hr. Chest radiograph revealed loss of volume in middle and lower lobes and small right pleural effusion. Left lung was normal. Perfusion lung scintigram reveals perfusion defect in right lung base (solid arrow) and smaller defect in left lung base (open arrow).