PET / CT with Ga-68-HA-DOTATATE for Neuroendocrine Tumours

Diagnostic procedure

In a detailed interview you will discuss with one of our doctors your symptoms, examinations conducted previously, along with treatments, as well as the procedures used in the scheduled examination.

Following this, an intravenous injection will be made into a vein in your arm containing a trace of a radioactively labelled substance that  attaches to the somatostatin receptors of the tumour tissue. Therefore, an exposure time of about 1 hour is necessary before the images can be created. The substance used is very well tolerated. Allergic reactions are not documented. The radiation exposure is about 4-6 mSv, about the same as a diagnostic CT of the spine.

After that, you can relax in our waiting room. You should drink at least 1 litre of mineral water and frequently empty your bladder. This improves the quality of the imaging. Mineral water is readily available at our office.

The imaging is performed while lying down and will take about 45 min. It is done with a so-called PET scanner. This device has no closed tube, but two separate ring systems which are arranged one behind the other with some spacing. In between these the unit is open. Therefore, the imaging is usually well tolerated even for people who are claustrophobic. Throughout the investigation you will be looked after by one of our medical technicians, who will be in permanent earshot.

The results of the examination are evaluated by the attending physician on a monitor, individual images are printed out on paper and  the entire record of the investigation is archived onto a CD-ROM.

In a conversation afterwards, the attending physician will discuss the findings with you. As a rule, you will receive the doctor's report, the images taken, and the CD-ROM.


On the day of the examination, it is not necessary to abstain from food and drinks.

Medications containing the active ingredient "octreotide" (Bendatreotid, Sandostatin, Octreotid) must be discontinued 24 hours before the examination.

The radiopharmaceutical is prepared individually for patients and can not be stored. Therefore, punctuality is absolutely essential.