How does somatostatin receptor scintigraphy work?
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.
What is an Octreoscan test?
An octreotide scan, also known as somatostatin receptor scintigraphy, is a test used to check the body for the presence of neuroendocrine tumor cells. This test is done in a Nuclear Medicine department, which is a type of radiology that uses radioactive materials to diagnose or treat diseases.
Is Octreoscan a PET scan?
Background: Clinicians may order Octreoscan or positron emission tomography (PET) scan for staging patients with neuroendocrine tumors (NETs).
What is the difference between a PET scan and an octreotide scan?
Conclusions Ga PET/CT is more accurate for staging and superior to Octreoscan SPECT in the detection of overall number of lesions in the body as well as organs and bones. Ga PET/CT also allows for calculation of standardized uptake value, has less whole body radiation, and is performed in less time versus Octreoscan.
How many somatostatin receptors are there?
5 receptors
The 5 receptors of the somatostatin receptor family belong to the G-protein coupled receptor superfamily (GPCR).
What is amyloid PET scan?
Positron Emission Tomography (PET) is a minimally-invasive diagnostic imaging procedure used to distinguish normal from diseased tissue in conditions such as cancer, ischemic heart disease, and some neurologic disorders.
Will a PET scan show carcinoid tumors?
This type of PET scan is useful in finding high-grade (grade 3) carcinoid tumors, but a newer type of PET scan, called a Gallium-68 PET/CT Dotatate scan is being used for low (grade 1) or intermediate-grade (grade 2) GI carcinoid tumors.
Does a PET scan show carcinoid tumors?
Do carcinoid tumors show up on a PET scan?
This type of PET scan is not very useful in finding atypical carcinoid tumors, but a newer type of PET scan called a gallium-68 dotatate PET/CT scan is being used more often for typical carcinoid tumors. It uses the radioactive agent 68Ga-dotatate which attaches to the somatostatin receptors on carcinoid cells.