Is T2 mapping reliable in evaluation of native and repair cartilage tissue of the knee?

Journal of Experimental Orthopaedics

Table 5 Interobserver agreement

	ROI 1	ROI 2	ROI 3	ROI 4	ROI 5
Native^a	0.76 (0.56 – 0.90)	0.27 (0.11 – 0.46)	0.33 (0.14 – 0.53)	0.46 (0.20 – 0.73)	0.70 (0.57 – 0.82)
ACI^a	0.51 (0.18 – 0.72)	0.01 (0.00 – 0.39)		0.01 (0.00 – 0.39)	0.84 (0.64 – 0.96)
DEB^a	0.79 (0.51 – 0.94)	0.23 (0.02 – 0.52)		0.60 (0.24 – 0.87)	0.59 (0.37 – 0.79)
MFX^a	0.72 (0.38 – 0.95)	0.19 (0.00 – 0.61)		0.31 (0.00 – 0.80)	0.56 (0.24 – 0.86)
Rad	0.90 (0.41 – 0.97)	0.65 (0.41 – 0.81)	0.66 (0.46 – 0.80)	0.78 (0.47 – 0.92)	0.62 (0.38 – 0.79)
Orth	0.66 (0.26 – 0.87)	0.44 (0.14 – 0.67)	0.23 (0.00 – 0.49)	0.40 (0.00 – 0.75)	0.75 (0.57 – 0.86)

Overall interobserver agreement (^a) for T2 measurements of native cartilage, ACI (Autologous Chondrocyte Implantation, DEB (Debridem ent) and MFX (Microfracture)
ROI (Region of interest) 1 and 2: sagittal plane, medial and lateral condyles, respectively. ROI 3: mid-sagittal, patella. ROI 4 and 5: coronal plane, medial and lateral condyles, respectively. Interobserver agreement for radiologists (Rad.) and orthopaedic surgeons (Orth.) is presented in the two lower rows