I feel that label is actually deserved. Yes, some cancer types are easier to detect with MRI, in particular inside of a body, but at the same time MRI in and by itself isn't great at predicting all cancer types. How could it help with regards to leukemia, for instance? What exactly could MRI detect here better than other diagnostic tools? One has to keep in mind that diagnosis also takes time - plus the cost; and the overdiagnosis problem which means that some cancer that are not really relevant, are hyped up by MRI to be the end of the world for a patient. So there is a trade-off.

IMO MRI needs to become cheaper; and more reliable too.