This is the ValueSet that contains all the codes in Effective Dose Units (http://hl7.eu/fhir/imaging-r5/ValueSet/im-effective-dose-units) and Effective Dose Units (http://hl7.eu/fhir/imaging-r5/ValueSet/im-effective-dose-units). E.g. what you have to deal with if you get resources containing codes in either of them