title: Quality control and assurance.
authors: Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, PA 19111.
authors: G E
authors: GE
authors: Hanks
mesh_terms: D008495:Medical Oncology; D011785:Quality Assurance, Health Care; D011786:Quality Control; D011871:Radiology / Q000592:standards*; D011878:Radiotherapy / Q000706:statistics & numerical data* / Q000639:trends; D012042:Registries; D012107:Research Design; D014481:United States