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. 1. —Illustration of CT system geometry shows intersection of X-ray beam with dosimetry phantom. Insert indicates idealized dose profile measured along line AB. (Courtesy of Shope TB, Food and Drug Administration's Center for Devices and Radiological Health, Gaithersburg, MD)