title: ALUMINUM WEDGE FILTERS FOR 220 TO 300 KILOVOLTAGE ROENTGEN RAYS.
mesh_terms: D000535:Aluminum; D003300:Copper; D005374:Filtration; D006801:Humans; D011878:Radiotherapy; D011879:Radiotherapy Dosage; D014965:X-Rays
chemical_list: D003300:Copper; D000535:Aluminum
keywords: ALUMINUM; COPPER; FILTRATION; RADIOTHERAPY; RADIOTHERAPY DOSAGE