Somatostatin Receptor Scintigraphy

**Semantic type:** Diagnostic Procedure

**Definition:** A type of radionuclide scan used to find carcinoid and other types of tumors. Radioactive octreotide, a drug similar to somatostatin, is injected into a vein and travels through the bloodstream. The radioactive octreotide attaches to tumor cells that have receptors for somatostatin. A radiation-measuring device detects the radioactive octreotide, and makes pictures showing where the tumor cells are in the body.

**Synonyms:** - SRS - octreotide scan - somatostatin receptor scintigraphy