Monochromatic polycapillary imaging utilizing a computed radiography system

抄録

A fundamental study on quasi-parallel radiography using a polycapillary plate and a copper-target x-ray tube is described. In the experiments, the tube voltage was regulated from 12 to 22 kV, and the tube current was regulated within 3.0 mA by the filament temperature. The exposure time was controlled in order to obtain optimum x-ray intensity, and the maximum focal spot dimensions were approximately 2.0 X 1.5 mm. The thickness and the inner capillary tube diameter of the polycapillary were 1.0 mm and 25 pm, respectively. Monochromatic x-rays were produced using a 10 pm-thick nickel filter with a tube voltage of 17 kV, and these rays were formed into quasiparallel beams by the polycapillary. The radiogram was taken using a computed