<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
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--></style></head><body lang=EN-US link=blue vlink="#954F72"><div class=WordSection1><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Sent from <a href="http://go.microsoft.com/fwlink/?LinkId=550986">Mail</a> for Windows 10</p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman",serif'><o:p> </o:p></span></p><div style='mso-element:para-border-div;border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;border:none;padding:0in'><br><b>From: </b><a href="mailto:ghostcz@hotmail.com">louie L</a><br><b>Sent: </b>Monday, December 14, 2015 04:38<br><b>To: </b><a href="mailto:lihanwei_1500@126.com">Freyman li</a><br><b>Subject: </b>RE: [Rtk-users] Rtk Detector Displacemets</p></div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman",serif'><o:p> </o:p></span></p><p class=MsoNormal>Hi,</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Can you post your geometry file to the mail list? Your problem sounds like a result of wrong geometry settings.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Best regards,</p><p class=MsoNormal>Louie</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Sent from <a href="http://go.microsoft.com/fwlink/?LinkId=550986">Mail</a> for Windows 10</p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman",serif'><o:p> </o:p></span></p><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><br><b>From: </b><a href="mailto:lihanwei_1500@126.com">Freyman li</a><br><b>Sent: </b>Monday, December 14, 2015 04:25<br><b>To: </b><a href="mailto:Rtk-users@public.kitware.com">Rtk-users@public.kitware.com</a><br><b>Cc: </b><a href="mailto:rtk-users@openrtk.org">rtk-users@openrtk.org</a><br><b>Subject: </b>[Rtk-users] Rtk Detector Displacemets<o:p></o:p></p></div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman",serif'><o:p> </o:p></span></p><p class=MsoNormal>Dear rtk-users,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have generated the geometry XML file by using the geometry calibration in my CBCT system. And I want to reconstruct the volume from 360 raw projections data.</p><p class=MsoNormal>But after running the rtkfdk.cxx, I get an output message that "Cannot account for too large detector displacements, a part of space must be covered by all projections."</p><p class=MsoNormal>And I try to use the addprojection function to generate a simple geometry structure using only SID and SDD, this problem did not happen but the reconstruction result is not correct.</p><p class=MsoNormal>How can I solve this problem? Is there any limitation about the detector weighting?</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I really appreciate any help you can provide.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>With regards,</p><p class=MsoNormal>Freyman li</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>