title: Effect of scanners on nation's health bill remains undecided.
mesh_terms: D002567:Certificate of Need; D005102:Health Expenditures; D006296:Health Services / Q000191:economics* / Q000331:legislation & jurisprudence; D006278:Medicare; D014057:Tomography, X-Ray Computed / Q000191:economics* / Q000706:statistics & numerical data; D014481:United States