Research Article

Radiomics Feature Analysis of Cartilage and Subchondral Bone in Differentiating Knees Predisposed to Posttraumatic Osteoarthritis after Anterior Cruciate Ligament Reconstruction from Healthy Knees

Figure 1

Cartilage and subchondral bone range of interest (ROI) of different compartments. (a) Lateral femur and tibia ROI of a healthy control; (b) medial femur and tibia ROI of the control; (c) lateral femur and tibia ROI of an ACLR patient; (d) medial femur and tibia ROI of the patient. The ROI of cartilage was segmented by a radiologist, representing T2 values (blue for 0 ms and red for 100 ms). The ROI of subchondral bone, which is a 5 mm-wide band-like structure below the subchondral bone plate covered by cartilage, was calculated according to the cartilage ROI and illustrated with a grey border.
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