This is most poorly written section, in my opinion.  There are too many loose ends, which creates problems for the medical physicist.  Unfortunately, unless it is mandated by regulation and/or accreditation requirements, facilities do not like what we have to say.  The QC program for CT must conform with the ACR accreditation program.  Decision also needs to be made if there should be a different set of requirements for CT units solely used for radiation oncology simulation, only.