Fig. 2From: Comparison of 2D Fat Suppressed Proton Density (FS-PD) and 3D (WATS-c) MRI pulse sequences in evaluation of chondromalacia patellaeForty-five-year-old woman with knee pain, 3D WATS-c (a) showing linear areas of low signal intensity in lateral patellar articular facet and its surface less than 50% of articular thickness in keeping with grade 2A, FS-PD (b) show corresponding high signal intensityBack to article page