Fig. 5

7-T MRI of a patient (mean age of subjects included: 49 years old; interquartile range, 44–55) 8 years after osteochondral treatment at the medial femoral condyle. a Morphologic proton-density fast spin-echo image. b Graphical overlay with T2 map. Colour bar represents relaxation times (ms) (higher values, more water and disturbed collagen architecture). c Graphical overlay with glycosaminoglycan chemical exchange saturation transfer (gagCEST) image. Colour bar represents gagCEST asymmetries in % (lower values, less proteoglycan content). d Graphical overlay with sodium image. Colour bar represents the sodium signal-to-noise ratio values (lower values, less proteoglycan content).

Reprinted with permission from: Krusche-Mandl et al., Osteoarthr Cartil 2012 (reference [31])