CLINICAL NUCLEAR MEDICINE: ENDOCRINE SYSTEM

5 mCi (185 MBq); 0.5 to 1.5 mCi 123I

THYROID SCAN

Radiopharmaceutical: The adult dose is____ of 99mT pertechnetate administered intravenously, or ___

patient's weight

THYROID SCAN

Radiopharmaceutical: The pediatric dose is adjusted according to the ____.

20 minutes

THYROID SCAN

Scanning: Scanning should start ___ after the injection

gamma camera; 6-inch (1 5-cm)

THYROID SCAN

Scanning: A ____ with a pinhole collimator is used to obtain anterior, left oblique, and right anterior oblique thyroid image and a ____ anterior neck image.

thyroid gland

131 THYROID UPTAKE MEASUREMENT

Principle: 131l uptake is used to estimate the function of the ___ by measuring its avidity for administered radioiodine

higher; lower

131 THYROID UPTAKE MEASUREMENT

Principle: The ___ the uptake of 131l, the more active the thyroid; conversely, the ___the uptake, the less functional the gland

orally.

131 THYROID UPTAKE MEASUREMENT Radiopharmaceutical and Scanning: All doses of 131l sodium iodide (1311-NaCl) are administered ___

3 to 5 micro Ci (148 to 222 kBq)

131 THYROID UPTAKE MEASUREMENT Radiopharmaceutical and Scanning: The adult dose for a standard uptake test is ___ of 131I.

patient's weight.

131 THYROID UPTAKE MEASUREMENT Radiopharmaceutical and Scanning: The pediatric dose is adjusted according to the ___

2 X 2 inch (5 X 5 cm) sodium iodide/photomultiplier tube

131 THYROID UPTAKE MEASUREMENT Radiopharmaceutical and Scanning: Measurements are obtained using an uptake probe consisting of a ____ assembly fitted with a flat-field lead collimator