FIELD: physics.
SUBSTANCE: invention relates to x-ray radiation filtration means. To generate multi-energetic x-ray radiation x-ray tube (10) is developed to generate multi-energetic x-ray radiation, containing anode (12) and filtering unit (14). Anode has, at least, first (16) and second positions (18) of focal point, which are shifted relative to each other in displacement direction (20), transverse to x-ray radiation projection direction. Filtering unit comprises first plurality (22) of first sections (24) with first x-ray radiation filtration parameters and second plurality (26) of second sections (28) with second x-ray radiation filtration parameters, wherein filtering unit is directed filter adjusted so, that, at least, first part of first x-ray beam (30), emitted from focal point first position, at least, partially passes through filtering unit through first sections, and, at least, second part of second x-ray beam (32), emitted from focal point second position, passes through second sections when passing through filtering unit. Second part of second x-ray beam is greater than first part of first x-ray beam.
EFFECT: technical result is enabling of multi-energetic x-ray radiation generation with required parameters.
14 cl, 21 dwg
