title: Use of a gradient intensifying screen for scoliosis radiography.
abstract: A gradient intensifying screen composed of rare earth phosphors and calcium tungstate was developed. It provides uniform film density when there is a graded increase in subject density. Use of this screen for scoliosis radiography provides an improved image and reduces radiation exposure.
mesh_terms: D015502:Absorptiometry, Photon; D002648:Child; D005260:Female; D006801:Humans; D007811:Lanthanum; D011187:Posture; D011856:Radiographic Image Enhancement / Q000379:methods; D011859:Radiography / Q000295:instrumentation / Q000379:methods*; D012600:Scoliosis / Q000000981:diagnostic imaging*; D014414:Tungsten
chemical_list: D007811:Lanthanum; D014414:Tungsten