title: Perfecting the picture. Contrast agents to make ultrasound clearer, pricier.
authors.forename: S
authors.initials: S
authors.lastname: Hensley
mesh_terms: D003287:Contrast Media / Q000191:economics*; D016527:Drug Costs; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D014463:Ultrasonography / Q000639:trends*; D014481:United States