I am unable to recommend medical testing or management without performing a complete history and physical examination. Testing with computerized tomography (CT) scanning or magnetic resonance imaging (MRI) is done for specific reasons. I suggest that you consult with your physician to see which imaging test will be most likely to yield the best information. CT scanning can be done without iodinated contrast and could yield some information. MRI scanning sometimes is done with contrast that does not contain iodinated contrast and could be helpful if contrast is needed to get the appropriate information.