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🌱 來自: Approach to suspected Cushing’s syndrome

somatostatin scan

• An octreotide scan is a type of SPECT scintigraphy used to find carcinoid, pancreatic neuroendocrine tumors, and to localize sarcoidosis.
• It is also called somatostatin receptor scintigraphy (SRS).
• Octreotide, a drug similar to somatostatin, is radiolabeled with indium-111, and is injected into a vein and travels through the bloodstream.
• The radioactive octreotide attaches to tumor cells that have receptors for somatostatin (i.e. gastrinoma, glucagonoma, etc.).
• A gamma camera detects the radioactive octreotide, and makes pictures showing where the tumor cells are in the body, typically by a SPECT technique.
• A technetium-99m based radiopharmaceutical kit is also available.

Octreotide scan - Wikiwand