Gallium (GA-67) can be injected intravenously, with images taken at 24 hrs, 48 hrs and 72 hrs after the injection.  Or GA-67 will be injected intravenously, and images taken at 48 hrs and 72 hours after the injection.
There are many factors which determine the proper procedure for you. 

There are many diagnostic applications for a gallium scan  Gallium scans can be done to assess the extent of involvement in malignancies such as Hodgkin’s disease, non-Hodgkin’s lymphoma, hepatoma, lung cancer and melanoma.  It is also used for patients with non-Hodgkin’s lymphoma or Hodgkin’s disease to determine the effectiveness of therapy. 

• Because the doses of radiopharmaceutical administered are very small, nuclear medicine procedures result in exposure to a small dose of radiation. Nuclear medicine has been used for more than five decades, and there are no known long-term adverse effects from such low-dose studies. 

• As with all radiologic procedures, be sure to inform your physician if you are pregnant. In general, exposure to radiation during pregnancy should be kept to a minimum. 

• Allergic reactions to the radiopharmaceutical can occur, but are extremely rare.