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. 3B —Effects of provocative maneuvers on flow in vertebral artery (A) and internal carotid artery (ICA) (B) in 72-year-old asymptomatic man with innominate artery stenosis. Waveform from right ICA is initially dampened and shows typical systolic spike followed by a subtle midsystolic deceleration. Flow never crosses baseline. After release of blood pressure cuff, there is minimal change, with mild generalized decrease in velocity during first cardiac cycle, but no overall change in waveform appearance.