Ritter E M, Wright C E, Fritz S L, Kirchmer N A, De Smet A A
Radiology. 1980 Apr;135(1):230-2. doi: 10.1148/radiology.135.1.7360970.
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.
开发了一种由稀土磷光体和钨酸钙组成的梯度增强型增感屏。当被检体密度呈梯度增加时，它能提供均匀的胶片密度。将这种增感屏用于脊柱侧弯放射摄影可提供更好的图像并减少辐射暴露。
