title: Computed tomography--a controversy revisited.
mesh_terms: D006285:Health Planning; D006801:Humans; D009682:Magnetic Resonance Spectroscopy / Q000706:statistics & numerical data; D013675:Technology, High-Cost; D014057:Tomography, X-Ray Computed / Q000191:economics / Q000706:statistics & numerical data*; D014481:United States