This research protocol makes pictures of brain tumors. The pictures are made with a positron
emission tomography (PET) scanner. PET scans use radioactivity to "see" cancer cells. We are
using a new kind of PET scan. The new PET scan is called [18F]-FACBC PET. We will compare
this to the standard PET scan. The standard PET scan is called [11C]-methionine PET.
We expect these pictures will give us information about your tumor. We also hope to collect
information about the amount of radioactivity exposure. We will measure radioactivity
exposure to your tumor, brain and other organs. The research study results will be used to
support the submission of an investigational new drug (IND) application to the Food and Drug
Administration (FDA).