JPNM Physics

511 keV Collimated Imaging

Radiation Safety Issues

Document created May 30, 1996; Last modified June 3, 1996

The imaging room environment has been surveyed during a hot activity phantom measurement involving about 70 mCi of F-18. The following table highlights the exposures of interest with the activity normalized to a 5 mCi F-18 FDG injection:

LocationExposure Rate
per 5 mCi F-18

1 meter640
4 meters68
1 floor down11


We must be concerned with both the occupational workers, the technologists who admisister the nuclide and attend to the patient during image acquisition, and the non-occupatonal workers who reside in the offices below the imaging room.

Douglas J. Wagenaar, Ph.D.,