PET Tumor Survey 1. An imaging procedure using F-18 FDG to identify the presence of a tumor or to assess regional or metastatic spread of tumor.   2. Indications a. Differentiation of malignant and benign masses. b. Assessment of regional and/or metastatic spread of tumor. c. Evaluation of tumor recurrence vs. radiation necrosis or post surgical changes. d. Assessment of tumor response to therapy. e. Determination of biopsy site(s).   3. Procedure a. Consultation with Nuclear Medicine/P.E.T. staff is required. b. An I.V. Line will be placed by P.E.T. Center personnel. c. An arterial line will be placed for blood sampling by P.E.T. Center personnel if a quantitative study is requested. d. The patient must be fasting (except for water) a minimum of 6 hours prior to the study. e. The patient should not receive I.V. dextrose solutions for a minimum of 4 hours prior to the study. f. A urinary catheter may be placed if imaging of the pelvic region is required. g. Length of study is 1-3 hours depending on how much of the body is to be included in the survey. h. Blood glucose level will be checked prior to the injection of F-18 FDG. i. Glucose regulation may be required prior to the study if the patient is a diabetic.   Other Studies Myocardial_Metabolism Myocardial_Perfusion PET_Bone_Survey Cerebral_Blood_Flow Regional_Cerebral Metabolism

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