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A 24-year-old female asked:

why does a high amount of radiation in ct scan not cause more damage than a lower amount of natural radiation over two year time? doesn't the natural smaller amount of damage overtime give cells a chance to fix damage more than a ct scan?

1 doctor answer1 doctor weighed in
Dr. John Berryman
Obstetrics and Gynecology 54 years experience
CT radiation ?'s: The level of radiation exposure is cumulative over time (hence the use of radiation detection badges in employees doing the various radiation imaging), so a higher exposure (as in CT scans) over time can cause mutations in the cell DNA which can become cancerous.

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What does acat scanshow?

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It depends: It depends on what part you are examining. A brain ct scan scan show tumors or bleeding, while an abdominal ct scan can show infections such as diverticulitis or obstructions such as small bowel volvulus.
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What is computerized tomography (ct)

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Imaging...: A 'ct' scan is a very sophisticated imaging procedure designed at taking detailed pictures of one's bodies; to help the doctors better pinpont the causes of what ails you.
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What is a cat scan?

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Computed Tomography: Ct scans are special xray tests to look inside the body to look for things such as cancer, abdominal or thoracic infections, or strokes in the brain.
A 32-year-old member asked:

Which are the limitations of CT scanning of the head?

3 doctor answers5 doctors weighed in
Dr. Marcel Hungs
Neurology 26 years experience
Low resolution: A ct has advantages and disadvantages: a ct is cheap, fast done and gives a great information about blood, bone and calfifications. However, it is done with x- ray, and has low resolution of tissue such as the brain. An MRI might be at time better, depending on the goal of the exam.
A 41-year-old member asked:

What's the difference between CT scanning and pet scanning?

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Dr. Felix Brizuela
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Radiation: Pt scan uses radioactive glucose that is injected. The glucose is taken up by organs for energy, and we measure how active the tissue is. Dead tissue, like a stroke takes up no glucose. Cancer takes up too much. Ct only takes a picture.

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Last updated Feb 26, 2020

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