PET/CT is a hybrid imaging procedure combining positron emission tomography (PET) and computer tomography (CT). In the Ga-68 DOTATOC PET/CT examination, a radioactive compound, consisting of the diagnostic positron emitter Gallium-68 and the peptide "DOTATOC", is used to detect neuroendocrine tumors and metastases. It is an obligatory procedure to assess whether a patient is suitable for PRRT. Furthermore, it also plays an important role in the follow-up after PRRT.
What should be considered before a PET/CT examination is performed?
First of all, it is important that your attending physician completes the registration form for PET/CT examinations (Download form) and returns it to us.
How is a PET/CT examination performed?
The radiopharmaceutical (Ga-68 DOTATOC) is injected via an intravenous access. After the injection, there is an approx. 60-minute waiting period. During this time, you will be given an oral contrast medium to drink so that the bowel can be demarcated. The actual PET/CT examination lasts about 20 minutes in total, whereby first, the radioactivity is measured using PET, followed by the CT examination with possible administration of contrast medium via the vein.
What do I have to consider as a patient?
For the Ga-68 DOTATOC PET/CT examination, you must be fasting for about four hours due to the possible administration of a CT contrast medium during the study. If you are undergoing therapy with somatostatin analogues (Somatuline, Sandostatin etc.), please contact us in advance by telephone, as it may be necessary to pause this medication. Please bring along (if not submitted in advance) all reports (histology, surgery report, doctor's letters, tumor markers, etc.) and, if applicable, the CT/MRI images (on a CD) with you. Please also let us know if you have a thyroid disease, kidney disease or an allergy to contrast media.
Registration form for Ga-68 DOTATOC-PET/CT examination: (Download form)