X-RAY EXAMINATION APPARATUS WITH X-RAY FILTER

摘要

The X-ray examination apparatus comprises an X-ray filter for locally attenuating the X-ray beam. The X-ray filter includes a plurality of filter elements. The X-ray absorptivity of each filter element is controlled by the amount of X-ray absorbing liquid with which the filter element is filled. The filling of filter elements is controlled by a voltage. The X-ray absorbing liquid contains a suspension of very small X-ray absorbing particles.