MRIs are good if you know what you’re looking for, and usually with contrast, which in a situation like cancer where you need to do them often can result in all

MRIs are good if you know what you’re looking for, and usually with contrast, which in a situation like cancer where you need to do them often can result in allergic reactions. In a full body situation, they are looking for mets, and the uptake of radioactive sugar by the tumors will let a PET scan find them.