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Method and device for correcting artefacts during X-ray imagery, especially computer tomography, with a moving modulator field
专利权人:
Matthias Goldammer
发明人:
Matthias Goldammer,Karsten Schörner
申请号:
US14009189
公开号:
US09263164B2
申请日:
2012.03.23
申请国别(地区):
US
年份:
2016
代理人:
摘要:
A method and a device produce X-ray images of objects, according to which artifacts caused by scattered radiation are corrected. To this end, a modulator field is used, that can be moved from a first position to a second position, thereby enabling modulator field areas with small and relatively large X-ray attenuation coefficients to be interchanged. An initial amplitude-modulated projection of the object is respectively produced in each of the two positions, and a scattered image associated with the projection is respectively calculated. This is especially suitable for rapid CT scans.
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