title: X-rays: HVT range 0.5-3.0 mm of Cu. Diaphragm-limited fields.
mesh_terms: D000388:Air; D003300:Copper; D006801:Humans; D008954:Models, Biological; D011879:Radiotherapy Dosage / Q000592:standards*; D014001:Tin
chemical_list: D014001:Tin; D003300:Copper