Meiler J
Rontgenblatter. 1978 Jul;31(7):388-94.
The article discusses the effects on tomographic results exercised by uniform exposure distribution in linear direction, as well as by larger exposure fractions in the internal half of the pathway and outer pathway sections. Predominance of the interior exposure fraction may yield a tomogram which is equally significant as obtained with constant blurring, although the angle of the pendular movement must be considerably greater. Transferring the medium exposure to the outer pathway sections yields faulty images. Uniform exposure distribution produces the most favorable results. In multidirectional layers, spiral blurring with control-led intensity was found to be most appropriate. This requires the smallest pendular angle compared with other tomograms of equal contrast, and also avoids faulty images.
本文讨论了线性方向上均匀曝光分布以及路径内部一半和外部路径部分较大曝光分数对断层扫描结果的影响。内部曝光分数占主导可能会产生与恒定模糊度下获得的断层图像同样显著的图像，尽管摆锤运动角度必须大得多。将中等曝光转移到外部路径部分会产生错误图像。均匀曝光分布产生的结果最有利。在多方向层面中，发现强度可控的螺旋模糊最为合适。与具有相同对比度的其他断层图像相比，这需要最小的摆锤角度，并且还可避免错误图像。
