Ivanov V S, Zhukov E M, Kozlovskiĭ E B, Mazurov A I
Med Tekh. 1975 Mar-Apr(2):16-9.
The frequency and contrast characteristics of the unit of the shadow image formation point to a material weakening of the high-frequency components in the spectrum of spatial frequencies already during the formation of the X-ray image. To compensate for this weakening that also takes place in other subassemblies of the television X-ray installation the introduction of an aperture corrector is necessary. As such a corrector in transmitting an image of little mobile objects a bidimensional aperture corrector set up on the transmitting television tube can be effectively used.
阴影图像形成单元的频率和对比度特性表明，在X射线图像形成过程中，空间频率谱中的高频成分已出现实质性减弱。为补偿在电视X射线设备的其他组件中也会出现的这种减弱，必须引入孔径校正器。作为传输小移动物体图像的这种校正器，可以有效地使用设置在传输电视管上的二维孔径校正器。
