title: The application of photographic subtraction in longitudinal cephalometric growth studies.
mesh_terms: D002508:Cephalometry / Q000379:methods*; D006801:Humans; D008445:Maxillofacial Development; D011856:Radiographic Image Enhancement; D011861:Radiography, Dental; D013382:Subtraction Technique; D014963:X-Ray Intensifying Screens