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Doctor insights on: Ct Scan

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Dr. Michael Korona
1,613 doctors shared insights

Ct Scan (Overview)

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 it is an estimate.


Dr. Philip Chao
Board Certified
32 years in practice
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Dr. Michael Korona
1,613 doctors shared insights

Ct Scan (Overview)

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 it is an estimate.


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If I am now about to have my third CT scan in 3 months. Is that safe?

If I am now about to have my third CT scan in 3 months. Is that safe?

Risk vs. benefit: It likely won't cause any long term effects. Your doctor feels the radiation risk is less than the risk of not following up. ...Read more

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Dr. Philip Chao
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32 years in practice
1M people helped
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I had a CT scan last thursday, its monday shouldn't i know something by now?

I had a CT scan last thursday, its monday shouldn't i know something by now?

Probably: Most likely the ct was read already. Depending on the ordering physician, some radiology sites may not be clinically integrated with the ordering docs electronic record and may mail them the results. In that case a simple phone call by the ordering office could get the results via phone or faxed to them. Call your dr's office and ask for the results. Best wishes. ...Read more

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Is a CT scan without contrast less accurate than one with contrast?

Depends: This depends on why the scan is being done, or what question the scan is trying to answer. In many/most instances the addition of contrast will provide additional information but this isn't always needed. For example, a ct scan being done to evaluate for bleeding in the head after a fall etc would not require contrast. ...Read more

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What is the best process for getting a referral for a CT scan?

Ask your doctor: Just about the only way i know of getting a ct scan is if the doctor feels it is necessary they will give you a presciption for one. Without a doctor's precription, i don;t think you can get one. ...Read more

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Dr. Philip Chao
Board Certified
32 years in practice
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Will taking a CT scan help determine if pe that was diagnosed in april 2012 has disappeared?

Not a great idea: If you had a pe in april but no longer have any symptoms, there is no need for a ct scan. Your body has a natural way of handling and dissolving clots. The point of hospital treatment is just to avoid short-term (first 7 days) recurrence or progression. Unnecessary ct scans should be avoided because of false positives (which trigger unnecessary tests) and because of high-dose ratiation -> cancer. ...Read more

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What does hypodensity on a CT scan mean?

It depends: A hypodensity on a CT an area where the tissue is less dense. It depends on what part of the body was imaged and where the hypodensity is seen. ...Read more

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Cost of CT scan without health insurance? Any options for me?

Cost of CT scan without health insurance? Any options for me?

Depending: Depending on the type of ct scan ordered, they can cost several thousand dollars. But the costs vary widely from place to place, so it would be good to shop around your area and ask each site what they charge for the scan you are considering. You would typically have 2 separate bills: one for the scan itself and a separate bill for the interpretation. The interpretation bill is much smaller. ...Read more

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Dr. Jeffrey Stevens
1 doctor shared a insight

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


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Dr. Philip Chao
Board Certified, Radiology
32 years in practice
1M people helped
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