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</o:shapelayout></xml><![endif]--></head><body lang=DE link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-US>Hello,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Would you please tell me what is the purpose of the iterative fdk filter in RTK?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>How does this work and what is the idea behind ?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>As I can see it begins with a usual fdk backprojection. What are the next steps<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>during one iteration ? Is there a paper that covers the iterative fdk filter ?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>kind regards & nice weekend,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Robert<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p></div></body></html>