The thyroid uptake neck phantom is used to check the proper performance of uptake measuring devices by simulating a thyroid in its anatomic position with respect to realistic absorption and scattering conditions in tissue. The phantom consists of a polyethylene cylinder (130 mm diameter by 120 mm height) and two inserts. Polyethylene with a density of 0.96 g/cm3 imitates the absorption and scattering conditions more realistically than acrylic material. The eccentric hole in the phantom cylinder accommodates two inserts to measure the initial pulse rate of radioactive material in a vial, a test tube or a capsule.
