title: Proton therapy faces high hurdles to general use.
authors.forename: L
authors.initials: L
authors.lastname: Castellucci
mesh_terms: D002986:Clinical Trials as Topic; D003362:Cost-Benefit Analysis; D017721:Hospital Costs; D006801:Humans; D009369:Neoplasms / Q000191:economics* / Q000532:radiotherapy*; D061766:Proton Therapy; D011878:Radiotherapy / Q000191:economics / Q000379:methods; D014481:United States; D011522:Protons
chemical_list: D011522:Protons