Related Experiment Video
Updated: Oct 3, 2026
Destabilization of the Medial Meniscus and Cartilage Scratch Murine Model of Accelerated Osteoarthritis
Published on: July 6, 2022
Early and Delayed 99mTc-MDP SPECT/CT Findings in Rheumatoid Arthritis and Osteoarthritis
Yasser G Abdelhafez1, Rosalie J Hagge, Ramsey D Badawi
1From the *Department of Radiology, University of California, Davis, Davis, CA; †Nuclear Medicine Unit, South Egypt Cancer Institute, Assiut University, Assiut, Egypt; and ‡Department of Rheumatology, University of California, Davis, Davis, CA.
Abstract:
We report the case of a 74-year-old man with seropositive rheumatoid arthritis (RA) and radiographic osteoarthritis (OA) who underwent dual-phase high-resolution Tc-MDP SPECT/CT. Early radiotracer enhancement was noted in 2 RA joints of the right hand, both presenting with a ring-like uptake pattern around the joint, consistent with synovitis. Insignificant early enhancement was noted at the first carpometacarpal joint, despite presentation of CT features of OA. The delayed-phase enhancement patterns were distinct, showing asymmetry in RA joints, but a symmetric, joint-centered pattern for the OA joint.
