<div dir="ltr"><br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div class="gmail-adn gmail-ads" style="border-left:none;padding:0px;display:flex;font-family:"Google Sans",Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:medium"><div class="gmail-gs" style="margin:0px;padding:0px 0px 20px;width:2628px"><div class="gmail-"><div id="gmail-:n0" class="gmail-ii gmail-gt" style="direction:ltr;margin:8px 0px 0px;padding:0px;font-size:0.875rem"><div id="gmail-:lv" class="gmail-a3s gmail-aiL" style="font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:small;line-height:1.5;font-family:Arial,Helvetica,sans-serif;overflow:hidden"><div dir="ltr">Hi All <div><br></div><div>I have use the CudaFDKConeBeamReconstructionFilter  algorithm to reconstruct a set of CBCT images, </div><div>1. )but I found that each slices contains blurry image area , because I was using a flat panel detector   , so I tried to adjust the source offset , inofplaneangle and outofplaneangle , but the blurry image area  still at there, could this be due to detector motion blur effect? Or is there a suggested way to correct it?</div><div><br></div><div>2). From the reference <a href="http://www.openrtk.org/Doxygen/DocGeo3D.html" target="_blank">http://www.openrtk.org/Doxygen/DocGeo3D.html</a> I can know that adjusting the source offset and inofplaneangle / outofplaneangle can ensure that the detector remains parallel to the source, But how can I make sure that the Z-axis of the ISO, the detector and the source are also kept parallel at the same time, Can I achieve this by adjusting any parameters or using any method?</div><div><br>The picture below is my result  for Question 1.</div><div><img src="cid:ii_ldyf0f2j0" alt="圖片1.png" width="400" height="400"><br><div><div dir="ltr"><div dir="ltr"><div><br></div><div>thanks for your reply,</div><div>BR,<div class="gmail-yj6qo"></div><div class="gmail-adL"><br></div></div></div></div></div></div></div><div class="gmail-adL"></div></div></div><div class="gmail-hi" style="border-bottom-left-radius:1px;border-bottom-right-radius:1px;padding:0px;width:auto;background:rgb(242,242,242);margin:0px"></div></div></div><div class="gmail-ajx" style="clear:both"></div></div><div class="gmail-gA gmail-gt gmail-acV" style="font-size:0.875rem;padding:0px;width:auto;border-bottom-left-radius:0px;border-bottom-right-radius:0px;border-top:none;margin:0px;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;font-family:"Google Sans",Roboto,RobotoDraft,Helvetica,Arial,sans-serif"><div class="gmail-gB gmail-xu" style="border-top:0px;padding:0px"><div class="gmail-ip gmail-iq" style="clear:both;margin:0px;padding:16px 0px;border-top:none"><div id="gmail-:mz"><table class="gmail-cf gmail-wS" role="presentation" style="border-collapse:collapse"><tbody><tr><td class="gmail-amq" style="padding:0px 16px;vertical-align:top;width:44px"><img id="gmail-:la_2" name=":la" src="https://lh3.googleusercontent.com/a/AEdFTp62JxvX9loEXx7_baRHm0clax6rdoy1Fu_kMhy1=s40-p-mo" class="gmail-ajn gmail-bofPge" style="display: block; width: 40px; height: 40px; border-radius: 50%;"></td><td class="gmail-amr" style="padding:0px;width:2628px"><div class="gmail-nr gmail-wR" style="box-sizing:border-box;border-radius:1px;padding:0px;border:none;margin:0px"><div class="gmail-amn" style="color:inherit;height:auto;padding:0px;display:flex;line-height:20px"><span id="gmail-:m0" role="link" tabindex="0" class="gmail-ams gmail-bkH" style="border:1px solid rgb(116,119,117);display:inline-flex;font-size:0.875rem;background:none;border-radius:18px;box-sizing:border-box;color:rgb(68,71,70);height:36px;outline:none;padding:0px 16px 0px 12px;min-width:104px;margin-right:8px">回覆</span><span id="gmail-:ly" role="link" tabindex="0" class="gmail-ams gmail-bkG" style="border:1px solid rgb(116,119,117);display:inline-flex;font-size:0.875rem;background:none;border-radius:18px;box-sizing:border-box;color:rgb(68,71,70);height:36px;outline:none;padding:0px 16px 0px 12px;min-width:104px;margin-right:8px">轉寄</span></div></div></td></tr></tbody></table></div></div></div></div></div></div></div></div>