X-ray computed tomography apparatus and multi-spectra correction using a radiation pre-filter

   
   

An X-ray computed tomography apparatus has a beam filter arrangement with regions of different filter material or/and different thickness profile of the filter material. This beam filter arrangement is disposed in the beam path preceding an examination subject. For multi-spectra beam hardening correction with estimation of the base material lengths, the computed tomography apparatus is fashioned for implementing projections of the examination subject with different effective material thickness or/and different effective material of the beam filter arrangement.

Um instrumento do tomography computado do raio X tem um arranjo do filtro do feixe com regiões do material diferente do filtro or/and perfil diferente da espessura do material do filtro. Este arranjo do filtro do feixe é disposto no trajeto de feixe que precede um assunto da examinação. Para multi-multi-spectra irradie endurecer a correção com estimation dos comprimentos do material baixo, o instrumento do tomography computado é formado executando projeções do assunto da examinação com espessura material eficaz diferente or/and do material eficaz diferente do arranjo do filtro do feixe.

 
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