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Doctor insights on: How Long Does Iodine Stay In Body When Had With Ct Scan

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Dr. Shontae Buffington
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Dr. Louis Gallia
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Computed Tomography (Definition)

Computed tomography is also known as CT scan. Ct uses xrays taken an 360 degrees combined with a computer to see"inside" the body. The table moves as the xray tube and detectors spin around the patient 10 times a second or more! the image shows excellent soft tissue detail, enhanced with injection of intravenous contrast or oral contrast. This way the body is shown in slices, in any plane, usually axially, but ...Read more


Dr. Shontae Buffington
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After CT scan what is duration of contrast medium (iodine) in body?

Are you sure.: If radio active iodine is used it is i-131 which has half life of less than 9days, then calculate every 9 days half of it will be eliminated in the body with i -131. Not bad if we did not synthesize i- 131 imagine if it is i- 129 which had half life of 15.7 million years. ...Read more

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I'll need radioactive iodine therapy in 2 weeks for my thyroid cancer.How can I get rid faster of the iodine in my body from a CT scan i had yesterday?

Not likely to work: If you received IV contrast with the ct scan, you will not be able to receive radioactive iodine in 2 weeks. It can take months for the iodine from the contrast to be excreted. You may be able to increase the rate slightly by taking a diuretic, but the best thing will be to wait at least 2 months. ...Read more

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Dr. Shontae Buffington
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If I am allergic to topical iodine, can I have intrevenous iodine for a CT scan with no reaction?

If I am allergic to topical iodine, can I have intrevenous iodine for a CT scan with no reaction?

Maybe: Ct contrast agents is usually iodinated and are classifed as either ionic or non-ionic. Some are more allergy-prone than others. Ct scan contrast is totally different than MRI contrast. In contrast, MRI contrast agents usually contains chelated gadolinium. Tell the radiologist about your previous ct scan contract allergic symptoms when getting your mri. ...Read more

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Hi, can iodine CT scan miss 2 CM aneurysm ? I guess it can seem a weird question with a obvious no but i d like to be sure. Thanking you in advance.

Hi, can iodine CT scan miss 2 CM aneurysm ? I guess it can seem a weird question with a obvious no but i d like to be sure. Thanking you in advance.

Brain Aneurysm: I assume you mean brain aneurysm, in which case the answer is no. A 2cm aneurysm is very large and will be easily detected by contrasted ( or non/contrast) ct scan. If by chance you are mistaken and mean 2millimeter, not centimeter, it is very easy for a ct to miss. ...Read more

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Did my CT scan said to drink 6-8 glasses of water for the next 3 days to clear my system from iodine, what happens if i don't? Not a water person..

Did my CT scan said to drink 6-8 glasses of water for the next 3 days to clear my system from iodine, what happens if  i don't? Not a water person..

Xray "dye" & water: Any time u have an imaging study like ct scan where contrast ("dye") is used it is recommended to flush the kidneys with plenty of water for next few days to prevent damage to the kidney filtering system. ...Read more

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Can you be allergy tested for iodine constrast dye before CT scan?

Not aware of testing: The risk of an adverse reaction to non ionic IV contrast dye is very low, less than 1 in 100 injections. Most of the reactions are mild and easily treated. Severe reactions occur in 1-2 per 10, 000 injections of IV non ionic contrast. If a person was severely allergic to many different things, perhaps a consultation with an allergist could be obtained. ...Read more

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Dr. Michael Korona
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Ct Scan (Definition)

Ct scan uses data from a beam of xrays and reconstructs a cross sectional image of your body. It is a high dose of xrays and used only when the benefits outweigh the risk. Cancer risk is 1 in 500 in children. Also using iodinated contrast might cause transient renal failure in about 5% of patients. (contrast induced nepropathy) most do not explain this to the patient as ...Read more


Dr. Michael Kleerekoper
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Thyro Block (Definition)

Thyro-Block is a thyroid ...Read more


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Dr. Shontae Buffington
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