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.)
Click on image to view larger version.

Fig. 1A. Positive, negative, and indeterminate pulmonary CT
angiograms. Pulmonary angiogram of 56-year-old man shows filling defect and
surrounding contrast material at segmental branching of right lower lobe
pulmonary artery. Thrombus is also present in medial right middle lobe
segmental pulmonary artery.