A Study of FolateScan in Patients With Knee Osteoarthritis

Study participants underwent a one-time evaluation by FolateScan which entailed a single intravenous injection of 99mTc-EC20 (total volume of 1.0 to 2.0 ml administered over a period of 30 seconds with radioactive dose between 20 and 25 mCi). A total of three imaging scans were acquired: an early phase (at \~1 minute) SPECT/CT of both knees; a late phase (at \~60 minutes) SPECT/CT image of both knees; and a late phase (at \~80 minutes) planar image of the whole body was performed (anterior-posterior, and postero-anterior).