18F-Sodium Fluoride (Na18F) PET imaging is a nuclear medicine procedure, and its principal radiopharmaceutical, Na18F, has been used for scanning the skeleton for the spread of cancer for more that 30 years, but has not been approved by Health Canada because less expensive alternate drugs have been available (99mTc diphosphonates). Given the sudden and drastic change in the availability of 99mTc, an acceptable alternative for 99mTc-diphosphonates is needed as soon as possible.