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. 2009 Sep;29(5):1433–1449. doi: 10.1148/rg.295095034

Figure 8a.

Figure 8a

Pigmented villonodular synovitis. (a) Sagittal multiplanar GRE MR image (MPGR; GE Healthcare) (400/15; flip angle, 30°; bandwidth, 122 Hz/pixel; voxel size, 0.51 × 0.67 × 4.0 mm; FOV, 130 × 130 mm) of the knee joint shows moderate to severe joint effusion and a Baker cyst (arrowhead). Synovium shows irregular nodular thickening with dark areas of hemosiderin deposition (arrows). (b) Sagittal contrast-enhanced T1-weighted spin-echo fat-saturated MR image (Philips) (500/10; flip angle, 90°; bandwidth, 108.5 Hz/ pixel; voxel size, 0.57 × 1.1 × 4 mm; FOV, 220 × 220 mm) shows diffuse irregular enhancement of the synovium.