title: Payment for Ultrasound Services in the Emergency Department.
mesh_terms: D004636:Emergency Service, Hospital / Q000191:economics; D018588:Fee-for-Service Plans / Q000191:economics*; D005102:Health Expenditures; D006801:Humans; D010820:Physicians; D011872:Radiology Department, Hospital / Q000191:economics* / Q000706:statistics & numerical data; D014463:Ultrasonography / Q000191:economics* / Q000706:statistics & numerical data; D014481:United States