What is a technetium thyroid scan?

Abstract. Technetium 99m pertechnetate (99mTcO4−) is a useful radioactive label for thyroid scanning. It is of particular merit when emphasis is placed upon a low dose of thyroid radiation, optimal resolution, and scanning of thyroid glands in which function is decreased or partly blocked.

Why is iodine used for thyroid imaging?

An RAIU evaluates the function of the thyroid gland. When your thyroid absorbs the radioactive iodine, it processes the iodine to make thyroid hormones. By measuring the amount of radioactive iodine in your thyroid gland, your doctor can evaluate the way you’re producing thyroid hormones.

Which scan is best for thyroid?

Computed tomography (CT) scan One problem using CT scans is that the CT contrast dye contains iodine, which interferes with radioiodine scans. For this reason, many doctors prefer MRI scans for differentiated thyroid cancer.

What to expect in a thyroid scan?

A normal thyroid scan would show no abnormalities in the size, shape, and location of the thyroid gland. Your thyroid will have an even green color on the image. Red spots on the image indicate abnormal growths in the thyroid.

What can thyroid scans detect?

A thyroid scan can be used to evaluate abnormalities found in a physical exam or laboratory test. The images from this test can be used to diagnose: lumps, nodules (cysts), or other growths. inflammation or swelling. an overactive thyroid, or hyperthyroidism . an underactive thyroid, or hypothyroidism.

What is a nuclear medicine thyroid uptake and scan?

A nuclear medicine thyroid uptake and scan is a 2-day test that studies the structure and function of the thyroid gland. Read this handout to learn how to prepare for the test, how it works, how it is done, what you may feel during the test, and how to get your results.

What is a nuclear test for thyroid?

A nuclear medicine thyroid scan is a diagnostic tool used to determine a patient’s thyroid function. The test is necessary to detect a number of conditions, including hyperthyroidism , goiter and thyroid cancer. The test requires a patient to ingest a small amount of radioactive iodine many hours before testing.

https://www.youtube.com/watch?v=0KzRKay6S3g