Principle: The examination is used to image tissue with somatostatin receptor expansion, especially tumors of neuroendocrine origin. The radiopharmaceutical, as a somatostatin analogue, binds to somatostatin receptors. Indications: neuroendocrine tumours carcinoid paraganglioma Patient Preparation: day before administration of radiopharmaceutical liquid diet fasting takeaway diet Duration of examination: approx. 4 hours. After the intravenous application of the radiopharmaceutical, which takes place without scanning, the examination takes about 1 hour, the second examination is in 3 hours after the application, the patient does not need to spend this time at the nuclear medicine workplace. The scan is repeated after 24 hours. Radiopharmaceutical: 99mTc – tectrotide Method of application: Intravenous Examination methodology: The patient is injected with the radiopharmaceutical and the first scan is performed approximately 60 minutes after application. The patient lies down on the gammacamera table and we perform a full-body scan. This is repeated identically 3 hours after application. To increase the sensitivity and specificity of the examination, targeted SPECT is added. At 24 hours after application, we take static images of the chest and abdomen.