Frequency of Each PET/CT Indication in Different Cancer Types

Indication no.Clinical indicationBCNHLHDCRCMelanomaLung cancer
18F-FDG PET/CT for diagnosis of tumor recurrence
 1Prior clinical suspicion of tumor recurrence15196475
 2Prior rising tumor markers or abnormal laboratory tests suggesting tumor recurrence1410802
 3Prior suggestive imaging (CT or MRI) for tumor recurrence236623726
 4Prior indeterminate or suggestive PET/CT scan for tumor recurrence17218251941
18F-FDG PET/CT before starting therapy for tumor recurrence
 5Restaging after confirmation of tumor recurrence502272
 6If the extent of disease will alter therapy or if a new baseline was needed before change in therapy13641238
18F-FDG PET/CT to assess therapy response for tumor recurrence
 7Therapy response assessment of recurrence383035704053
 8Intratreatment assessment of recurrence38339364747
 9Follow-up scan to assess the previous equivocal response1011676
Follow-up 18F-FDG PET/CT after completion of treatment for tumor recurrence
 10Follow-up for stable disease961734111
 11Follow-up for disease progression6273211217
 12Follow-up of disease in remission or per clinical trial protocol9597757512168
  • BC = breast cancer; NHL = non-Hodgkin lymphoma; HD = Hodgkin disease; CRC = colorectal cancer.