Radionuclide Safety Guideline for Ge-68

-Physical Data

  • Radiation: EC
  • Gamma & Xray: 9.22 keV (13.1%), 9.25 keV (25.6%), 10.3 keV (5.46%)
  • Gammas: from daughter Ga-68

Half-life

  • Physical: 271 days

External Hazard

  • Exposure rate at 1 cm from 1 mCi is 5375 mR/hr.
  • 10 mCi generator should be shielded with 1.5 cm thickness of lead in order to reduce the exposure to 5mR/hr at 1 foot.
  • 0.3 cm of lead will reduce the exposure to 0.5 mR/hr at 1'

Shielding

  • work behind lead shielding.

Safety Guidelines

  • Use shielding lead or leaded Plexiglas to minimize exposure while handling mCi quantities
  • Whole body and ring dosimeters are required.
  • Wear a lab coat and disposable gloves.
  • Accelerator produce
  • Ge68 generators function similar to Tc-99m generators

updated 1/2013