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 —Sagittal dynamic contrast-enhanced MR images of albumin-injected knee showing unenhanced (A, F, K) and contrast-enhanced (B-D, G-I, L-N) images obtained on days 0 (before induction, A-D), 1 (after induction, F-I), and 28 (after induction, K-N) of arthritis. G, (day 1 of arthritis), Evidence of synovial inflammation with joint effusion and synovial enhancement (arrows) noted in suprapatellar (long arrow) and posterior recess (short arrow) of knee. Although level of synovial inflammation decreased in interval between days 1 and 28 of arthritis, persistent synovial reaction is identified (arrowheads, L) in chronic stage of arthritis. D, I, and N, Regions-of-interest used to delineate the perisynovial region to derive time-intensity curves for that joint on days 0 (E), 1 (J) and 28 (O) of arthritis. Note the increased signal slope seen in the acute stage of arthritis (day 1, J) as compared with the slopes obtained on days 0 (E) and 28 (O) of arthritis.