<html xmlns:v="urn:schemas-microsoft-com:vml" 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><!--
/* Font Definitions */
@font-face
{font-family:宋体;
panose-1:2 1 6 0 3 1 1 1 1 1;}
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:微软雅黑;
panose-1:2 11 5 3 2 2 4 2 2 4;}
@font-face
{font-family:"\@宋体";
panose-1:2 1 6 0 3 1 1 1 1 1;}
@font-face
{font-family:"\@微软雅黑";
panose-1:2 11 5 3 2 2 4 2 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 72.0pt 72.0pt 72.0pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=ZH-CN link=blue vlink="#954F72"><div class=WordSection1><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt'>Thanks for your help! I attached the geometry settings to this email. And my detector size is 768*960 with a pixel size 0.254mm.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span style='font-family:"微软雅黑",sans-serif'>发件人<span lang=EN-US>:</span></span></b><span lang=EN-US style='font-family:"微软雅黑",sans-serif'> louie L [mailto:ghostcz@hotmail.com] <br></span><b><span style='font-family:"微软雅黑",sans-serif'>发送时间<span lang=EN-US>:</span></span></b><span lang=EN-US style='font-family:"微软雅黑",sans-serif'> 2015</span><span style='font-family:"微软雅黑",sans-serif'>年<span lang=EN-US>12</span>月<span lang=EN-US>14</span>日<span lang=EN-US> 11:38<br></span><b>收件人<span lang=EN-US>:</span></b><span lang=EN-US> Freyman li; rtk-users@public.kitware.com<br></span><b>主题<span lang=EN-US>:</span></b><span lang=EN-US> RE: [Rtk-users] Rtk Detector Displacemets<o:p></o:p></span></span></p></div></div><p class=MsoNormal><span lang=EN-US><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><o:p> </o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>Sent from <a href="http://go.microsoft.com/fwlink/?LinkId=550986">Mail</a> for Windows 10<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US 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 0cm 0cm 0cm'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US><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<o:p></o:p></span></p></div><p class=MsoNormal><span lang=EN-US style='font-size:12.0pt;font-family:"Times New Roman",serif'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Hi,<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>Can you post your geometry file to the mail list? Your problem sounds like a result of wrong geometry settings.<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>Best regards,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Louie<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>Sent from <a href="http://go.microsoft.com/fwlink/?LinkId=550986">Mail</a> for Windows 10<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US 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 0cm 0cm 0cm'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US><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></span></p></div><p class=MsoNormal><span lang=EN-US style='font-size:12.0pt;font-family:"Times New Roman",serif'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Dear rtk-users,<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>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.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>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."<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>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.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>How can I solve this problem? Is there any limitation about the detector weighting?<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>I really appreciate any help you can provide.<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>With regards,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Freyman li<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><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p></div></body></html>