Radiology departments take green approach with silverless film.
D003952:Diagnostic Imaging / Q000379:methods; D004787:Environmental Pollution / Q000517:prevention & control*; D007834:Lasers / Q000706:statistics & numerical data; D011872:Radiology Department, Hospital / Q000458:organization & administration*; D014481:United States; D014962:X-Ray Film / Q000639:trends*