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Doctor insights on: Side Effects Of A Thyroid Scan With Radioiodine

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Thyroid Scan (Definition)

The patient ingests radioactive iodine or has intravenous injection of radiotracer technetium to define structure, size, and function of thyroid gland. Overactive ( hyperthyroid) normal, and underactive thyroid glands are determined. Sometimes autoimmune conditions and tumors of the gland can be suspected. Correlative imaging ultrasound, mr imaging, and blood tests ...Read more


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When getting a thyroid scan, what's the procedure?

When getting a thyroid scan, what's the procedure?

Thyroid scan..: There are two types of nuclear thyroid scan. One involves IV injection of a tracer. The other involves ingestion of a radioactive iodine pill. The pill is more common....Usually you will be told not to consume foods with high iodine content for a few days before scan. 1st day you ingest the pill and you come back the next day for images of the neck on a gamma camera and calculation of uptake. ...Read more

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What is the definition or description of: thyroid scan with i 123?

What is the definition or description of: thyroid scan with i 123?

Thyroid evaluation: The isotope iodine 123 is ingested by patient. It is absorbed into blood stream and accumulates in the thyroid gland.The function of gland is determined by uptake of isotope by gland, increased (hyper), normal, or decreased (hypo). The structure of the gland is visualized showing size, location, and texture (homogeneous or nodular).. Nodules can be hypo- or hyperfunctioning, benign or malignant. ...Read more

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Whats the low iodine diet for the thyroid scan?

Whats the low iodine diet for the thyroid scan?

Preparation: Some diagnostic centers ask patients to undergo a 2 week low-iodine diet prior to a thyroid uptake and scan. This is because the study uses radioactive iodine (i-123 or low i-131) for the test. The iodine contained in food (seafood, table salt, etc.) may compete with the iodine used for the study, and thus results may be biased.Ideally, for the study your thyroid gland should be "hungry" for iodine. ...Read more

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Cn thyroid scan diffrentiate between benign n malignant follicular neoplsm?

Cn thyroid scan diffrentiate between benign n malignant follicular neoplsm?

NO : Hi. Nope, you need tissue (cells). Either an FNA for cytology (which may be non-diagnostic) or a surgical biopsy. Scan adds nothing to the diagnostic evaluation ...Read more

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Would a thyroid scan rule out everything no matter what the blood test resuslts were?

Would a thyroid scan rule out everything no matter what the blood test resuslts were?

No: Thyroid scan is only part of thyroid dysfunction workup. Thyroid scan usually shows functioning or nonfunctioning nodules, thyroid gland enlargement, decreased function, or goiter. Laboratory blood testing is extremely important in determining function of thyroid gland, hypo-, hyper-, or normal. Sometimes scan and blood tests differ in findings. ...Read more

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I'm due to have a thyroid scan in 3 days. Yesterday, I took two 25 mg antihistamine pills. Will this affect the results?

I'm due to have a thyroid scan in 3 days.  Yesterday, I took two 25 mg antihistamine pills.  Will this affect the results?

No, it should not.: The half life of most antihistamines should be less than 24 hrs and should be out of the system by then. I would check with the radiology center to confirm their policy. I would also avoid any more antihistamines until the time of testing. ...Read more

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What type of doctor can order a thyroid scan?

What type of doctor can order a thyroid scan?

Many: A thyroid scan gives info about metabolic activity in the thyroid gland. Almost any doctor involved in general medical care would be able to order this test if the patients history or physical findings supported the need. Depending on test results you may require follow up with an endocrinologist or a surgeon. ...Read more

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Is a thyroid scan and raidioactive throid treatment the same?

No: A thyroid scan is a study that exposes you to a small amount of radiation and allows the radiologist to see images of the thyroid. A radioactive thyroid treatment is when you are given very large amounts of radiation in order to "kill" the overactive thyroid or thyroid cancer. ...Read more

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What does a thyroid scan do?

Thyroid scan: It's a nuclear medicine scan use to evaluate how well your thyroid is working. The result will give information on the size, shape, location and the overall activity of the gland. It can also tell you if a thyroid nodule is functioning or non-functioning and help your doctor determine whether a nodule biopsy is needed. More info with the link below: http://www.Webmd.Com/a-to-z-guides/thyroid-scan. ...Read more

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Dr. Austina Cho
13 doctors shared insights

Thyroid (Definition)

The thyroid is an endocrine gland that sits in the lower part of the neck. It produces thyroid hormone - which ...Read more