5 doctors weighed in:
Brain MRI without contrast - what kinds of things might be missed without contrast?
5 doctors weighed in

Dr. Thomas Foster
Radiology
3 doctors agree
In brief: Tumors and anuerysms
A tumor may not be seen unless contrast is administered.
Also, any abnormality of the arteries or veins of the brain may not be visible without contrast.. Contrast improves specificity and sensitivity of the MRI and should be used when possible.

In brief: Tumors and anuerysms
A tumor may not be seen unless contrast is administered.
Also, any abnormality of the arteries or veins of the brain may not be visible without contrast.. Contrast improves specificity and sensitivity of the MRI and should be used when possible.
Dr. Thomas Foster
Dr. Thomas Foster
Thank
1 comment
Dr. Philip Chao
and also infections, meningitis, arteriovenous malformations, stroke, blod clots and more. Basically giving contrast during an MRI study improves its accuracy and changes the diagnosis about 25% of cases. Thats what the package insert for contrast says. It increases detection of lesions, and can significantly change the value of the test. Thats why I am always puzzled by so many doctors ordering non contrast MRI exams. If the patient has to come back for a second exam with contrast this can sometimes double the cost of the exam. if they ordered the test with contrast in the beginning it might add 200 dollars to the test.
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