question archive What helps the FNP decided whether to use contrast or not when ordering a CT scan or MRI?  

What helps the FNP decided whether to use contrast or not when ordering a CT scan or MRI?  

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What helps the FNP decided whether to use contrast or not when ordering a CT scan or MRI?

 

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What helps the FNP decided whether to use contrast or not when ordering a CT scan or MRI?

Radiologist or FNP uses both CT and MRI to detect and monitor cancer but each imaging methods have different strengths that make an appropriate for a particular reasons. Mostly , many people do not understand the difference in use of CT and MRI . The following are some of the reasons why an FNP may decide to use CT and MRI.

 

CT scan uses X-ray to create detailed pictures of organs ,bones, and other tissues . One lies on a flat table and moves through a scanning ring . Data is then collected in three dimensions images where the images reveal the abnormalities in both bone and soft tissues such as pneumonia, tumors and bone fractures. On the other hand MRI also creates detailed pictures of the inside body parts but uses radio waves and magnet to generate the pictures. Same way, one lies on a table and moves through a device which is much thicker than the CT scan . The pictures can only show the difference between normal and diseased tissues in the body.

 

With the use of CT scan one can create an image of almost the entire body in a few seconds. They are incredibly useful for diagnosing and staging cancer, checking whether it has come back, and monitoring whether a treatment is working. It's very effective for surveying the entire body to look for places where the cancer has spread, such as the lungs, liver, or bone hence become the first choice to stage cancer. On the other hand MRI excels in showing certain diseases that CT scan can not detect. It is easy to detect , prostate cancer, uterine cancer, certain liver cancer which are not shown when using a CT scan. MRA is useful as a substitute for CT angiography when iodinated contrast material cannot be used.

 

MRI takes long time like 30 minutes while a typical CT scan may take only 5 minutes. In addition , CT is great for looking at a tiny bone fracture or an organ while MRI is better for looking at soft tissue like your brain.