title: Medicare to expand coverage of positron emission tomography.
mesh_terms: D001943:Breast Neoplasms / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D019458:Insurance Coverage; D006278:Medicare / Q000331:legislation & jurisprudence*; D014055:Tomography, Emission-Computed / Q000191:economics*; D014481:United States