title: Maintenance of Certification (Part IV): practice quality improvement update.
authors.forename: Thomas H
authors.initials: TH
authors.lastname: Berquist
mesh_terms: D002568:Certification; D006801:Humans; D011361:Professional Competence; D058996:Quality Improvement; D011871:Radiology / Q000592:standards*; D012955:Societies, Medical; D013044:Specialty Boards; D014481:United States