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Doctor insights on: Thyroid Scan With Technetium 99m

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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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How+is+thyroid+ scintigraphy +uptake+imaging+with+technetium+99m+calculated+and+performed+technically+patient+preparation ?

How+is+thyroid+ scintigraphy +uptake+imaging+with+technetium+99m+calculated+and+performed+technically+patient+preparation
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Thyroid uptake/scan: Is a nuclear medicine test performed to evaluate the structure and function of the thyroid. Technetium 99m pertechnetate is a radioactive material that is taken up (like iodine) in the thyroid. The radiotracer is injected into the bloodstream and a detector is used to measure the uptake. A special camera is used to generate a picture of the thyroid to assess the structure. ...Read more

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I'm being injected with technetium-99m for a hida scan, what to expect?

I'm being injected with technetium-99m for a hida scan, what to expect?

Gall bladder test: The patient is injected intravenously with tc99m hida (radiotracer).The patient lies on table with scaning camera over anterior abdomen. First part of study shows extracction of tracer from blood stream, visualization of gb and bowel.(30-40 min) patient receives slow injection of cck to stimulate gall bladder contraction. (60 min more imaging).Sometimes discomfort possibly related to gb disease. ...Read more

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Hida scan shows 17% function @ 20 min. No pain during exam 4.3 m of technetium 99m of choletec. 1.5mcg of cck. Bilirubin is 1.5 enzymes good.

Hida scan shows 17% function  @ 20 min. No pain during exam 4.3 m of technetium 99m of choletec. 1.5mcg of cck. Bilirubin is 1.5 enzymes good.

Not sure of results: Most laboratories determine ejection fraction, percentage of emptying at 30 or 60 minutes after injection of cck. I am not sure meaning of ejection fraction at 20 minutes. ...Read more

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What are the benefits of using technetium-99m for medical tracing instead of x-rays?

What are the benefits of using technetium-99m for medical tracing instead of x-rays?

Funct. vs. anatomic: Nuclear medicine involves using internal irradiation in order to define function of various organ systems of body, . Some isotopes are injected iv, inhaled, and some ingested. Most diagnostic nuclear medicine procedures involve low doses of radiation. The isotopes of higher doses are used to treat thyroid diseases or cancer. Benefits are from diagnosis of abnormality that can be detected/ treated. ...Read more

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Do I need to stop methimazole before thyroid technetium scan?

Do I need to stop methimazole before thyroid technetium scan?

YES!: You need to be off methimazole at least 4-7 days before the scan. Check w/your doctor before stopping the anti-thyroid drugs and with the nuclear medicine doc before scheduling the scam. ...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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How expensive is it to get a thyroid scan?

How expensive is it to get a thyroid scan?

Depends: Usually this is covered by your insurance. If you get a radioiodine thyroid scan it will be more expensive than a tc99m pertechnetate scan. Are you getting a scan alone or scan plus uptake? That will affect costs. I am estimating that you are looking at costs in the range of a hundred to several hundred dollars but these costs are generally set by the administration / management and not physician. ...Read more

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What do I have to do before my thyroid scan?

What do I have to do before my thyroid scan?

If hyperthyroidism: If you are having a diagnostic dose of i-123 (usually 200 microci), you should stop taking anti-thyroid medications (methimazole and ptu) and make sure you didn't have iodine-based IV contrast (used in ct scans) in the prior 6-8 weeks. For a diagnostic study a low-iodine diet is not require, unless you are going to received i-131 treatment shortly after the test. ...Read more

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What should I have to do after my thyroid scan?

What should I have to do after my thyroid scan?

Resume daily life: If thyroid scan was performed with iodine 123 or technetium 99m pertechnetate involves a low amount of radiation. The half lives are short enough (13 and 6 hours) that most irradiation will have dissipated by 24-48 hours. Whatever i123 does not accumulate in thyroid gland are excreted via kidneys, saliva, and sweat. Tc 99m usually exits via kidneys, GI tract, and saliva. I131 involves higher dose. ...Read more

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Dr. Jeffrey Stevens
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