PET scans are this way.
Yes, my husband had a number of PET scans. They are much more expensive than MRIs. Organs that normally have high sugar content can't be assessed to have cancer by a PET scan. The kidneys, for instance, will light up whether or not there is cancer there due to the usual sugar that is in the kidneys. When we would see the PET scans, organs normally with sugar were always lit up.
I was going to say the same-how would this be different than a PET scan? Other than PET scans use radioactive materials—there’s probably more overhead with handling.
PET scans use labeled 2-fluorodeoxy-D-glucose and expose you to ionizing radiation.