Another application of X-nuclei imaging of metabolism is found with deuterium imaging, which can be used to map glucose metabolism. In addition to the ability to map glucose metabolism as opposed to glucose uptake, deuterium metabolic imaging (DMI), has the additional advantage over positron emission tomography (PET), of using non-radioactive substrates [11]. The increased sensitivity of deuterium at UHF, makes DMI a viable alternative to PET.