Krug B, Fischbach R, Herrmann S, Dietlein M, Küpper T, Dölken W, Harnischmacher U
Institut und Poliklinik für Radiologische Diagnostik, Universität zu Köln.
Rofo. 1993 Feb;158(2):133-40. doi: 10.1055/s-2008-1032618.
175 matched skeletal x-ray examinations were carried out by digital luminescent radiography (DLR) and conventional screen-film system combinations. In digital luminescent radiography (DLR) two differently postprocessed images were obtained from one x-ray exposure: A display with low spatial frequency enhancement was opposed to a second display with high edge enhancement. Conventional and digital images were evaluated randomly and separately by four radiologists using a questionnaire. DLR proved to be diagnostically equivalent to the conventional technique except for a diminished visibility of subtle erosions and fissures. As major advantages of DLR maybe pointed out that faulty exposures were avoided by the automatic adjustment of image brightness and that the soft tissue margins could be more easily delineated in displays with high edge enhancement than in conventional radiography. However, digital displays with high edge enhancement did not provide additional diagnostic information and led to artifacts at the edges of metal prostheses.
采用数字荧光放射成像（DLR）和传统屏-片系统组合进行了175次匹配的骨骼X线检查。在数字荧光放射成像（DLR）中，一次X线曝光可获得两幅经过不同后处理的图像：一幅是具有低空间频率增强的显示图像，另一幅是具有高边缘增强的显示图像。四位放射科医生使用问卷对传统图像和数字图像进行随机、单独评估。结果表明，除了细微侵蚀和裂隙的可视性降低外，DLR在诊断上与传统技术相当。DLR的主要优点可能在于，通过自动调整图像亮度可避免曝光错误，并且在具有高边缘增强的显示图像中比在传统放射摄影中更容易勾勒软组织边缘。然而，具有高边缘增强的数字显示图像并未提供额外的诊断信息，并且会在金属假体边缘产生伪影。
