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A CT scan immediately after a stroke is usually looking to see if the stroke caused any bleeding. ( a hemorrhagic stroke ) If the dye were given it might hide any trace of blood. There are protocols in place as to how to treat a stroke and if bleeding is seen it changes what is done to help the patient recover from the stroke.

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Q: Why is a ct scan after a stroke done with out contrast?
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Related questions

What does it mean unenhanced on a ct scan?

Done with out contrast


What medications should not be taken after a Contrast CT Scan?

There are no generally contraindicated medications after a contrast enhanced Ct Scan.


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In which case contrast is not given in ct scan?

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It can


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About 48 hrs.


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A CT scan, computed tomography, is a medical test performed to diagnose a malady. The CT scan will allow the doctor to see internal injuries not shown on an X-ray picture.


What is a non-contrast CT scan?

There are two types of contrast used in CT, oral and IV. The oral contrast is usually a thin barium sulfate suspension and is used to distend and coat the stomach and intestines. IV contrast is usually a nonionic iodinated liquid injected into your arm. This highlights anatomy with blood flow. A noncontrast ct scan usually refers to NOT using the IV contrast, oral may still be used.


What does a ct scan of brain non contrast pick up?

A non contrast brain CT scan can pick up bleeds in or around the brain. It can also detect skull fractures and calcifications within the brain. Certain tumours can also be seen without the use of contrast.


How should I prepare for a CT scan?

If a contrast medium must be administered,the patient may be asked to fast from about four to six hours prior to the procedure.Pregnant women or those who could possibly be pregnant should not have a CT scan unless the diagnostic benefits outweigh.risks


Does a ct scan use a contrast medium?

Some CT exams are done w/contrast, some w/o contrast and some are done first w/o and then w/contrast. The body organs show up well w/o contrast. If the Dr. needs to see vasculature then IV contrast would be used. Contrast kind of "highlights" vessels. For instance, tumors need a great deal of blood to grow and if one is suspected a CT w/o may be done first and then a CT of the same area done W/ contrast to verify increased vasculature. The Kidneys and liver and heart all have allot of blood running thru them so these organs can yield more info when done w/ and then w/o contrast. There is also Oral contrast that a patient would drink to "highlight" the stomach and bowels for several different reasons/diagnoses.