<div dir="ltr">Hi Chole,<div><br></div><div>--proj_iso_x and  --proj_iso_y use the same unit as in other geometrical parameters, so in your case those should be in mm not in pixels.<br></div><div><br></div><div>Regards,</div><div>Chao</div></div><div class="gmail_extra"><br><div class="gmail_quote">2018-04-26 15:30 GMT+02:00 dagetuo <span dir="ltr"><<a href="mailto:1874415034@qq.com" target="_blank">1874415034@qq.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><span style="font-family:微软雅黑">Dear RTK-users,</span></div><div><div style="font-family:微软雅黑;font-variant-numeric:normal;font-variant-east-asian:normal;line-height:21px"><div><br>I have been trying to run the rtkfdk code for CBCT reconstruction but the result was not quite right.<br>I have attached a drawing of my setup and projections could be downloaded from: </div><div><div style="line-height:21px;font-variant-numeric:normal;font-variant-east-asian:normal"><a href="https://drive.google.com/drive/folders/1J0am5Hw67O8b5dmKNlEno4MOnbBZvsM0?usp=sharing" target="_blank">https://drive.google.com/<wbr>drive/folders/<wbr>1J0am5Hw67O8b5dmKNlEno4MOnbBZv<wbr>sM0?usp=sharing</a></div></div><div><br></div><div><div style="line-height:21px;font-variant-numeric:normal;font-variant-east-asian:normal">Description of our CBCT setup:</div><span style="font-variant-numeric:normal;font-variant-east-asian:normal;line-height:21px">1. The distance from Source to Isocenter is 602.00mm</span><br style="font-variant-numeric:normal;font-variant-east-asian:normal;line-height:21px"><span style="font-variant-numeric:normal;font-variant-east-asian:normal;line-height:21px">2. The distance from Isocenter to Imaging Surface of the Detector is 403.84mm</span><br style="font-variant-numeric:normal;font-variant-east-asian:normal;line-height:21px"><span style="font-variant-numeric:normal;font-variant-east-asian:normal;line-height:21px">3. Detector physical size: 434mm*434mm</span><br style="font-variant-numeric:normal;font-variant-east-asian:normal;line-height:21px"><span style="font-variant-numeric:normal;font-variant-east-asian:normal;line-height:21px">4. Image Resolution: </span>2816*2816<br style="font-variant-numeric:normal;font-variant-east-asian:normal;line-height:21px"><div style="line-height:21px;font-variant-numeric:normal;font-variant-east-asian:normal"><span style="font-size:10.5pt;line-height:1.5;background-color:window">5. angle step = 1 degree, angular covered is 205 degrees.</span><span style="background-color:window;font-size:10.5pt;line-height:1.5"> </span></div><br>The original size of projections was 2816*2816 and I resized them to (256,256) for faster calculation. </div><div><br>This is how I performed my reconstruction:<br>( rtksimulatedgeometry -n 205 -o I:\RTK140_build_git_for_test\<wbr>bin\Debug\geo.xml --sdd=1005.84 --sid=602.0 --proj_iso_y=-128.0 --proj_iso_x=-128.0 --arc=205.0</div><div><div><br>rtkfdk --verbose 1 --path=I:\RTK140_build_git_<wbr>for_test\bin\Debug\timo1 --regexp=DCM$ -o I:\RTK140_build_git_for_test\<wbr>bin\Debug\test3.mha --hardware="cuda" -g I:\RTK140_build_git_for_test\<wbr>bin\Debug\geo.xml --hann 1.0 --dimension 256,256,256<br></div>)<br><br>Could you please tell me if I am setting the geometry correctly?<br><br>Thank you in advance.<br></div></div><div style="font-family:微软雅黑;font-variant-numeric:normal;font-variant-east-asian:normal;line-height:21px"><br></div><div style="font-family:微软雅黑;font-variant-numeric:normal;font-variant-east-asian:normal;line-height:21px"><span style="background-color:window;font-size:10.5pt;line-height:1.5">Chole</span></div><div style="font-family:微软雅黑;font-variant-numeric:normal;font-variant-east-asian:normal;line-height:21px"><br></div><div style="font-family:微软雅黑;font-variant-numeric:normal;font-variant-east-asian:normal;line-height:21px"></div><br><div style="font-family:微软雅黑;font-variant-numeric:normal;font-variant-east-asian:normal;line-height:21px"><br></div><div style="font-family:微软雅黑;font-variant-numeric:normal;font-variant-east-asian:normal;line-height:21px"><br></div><div style="font-family:微软雅黑;font-variant-numeric:normal;font-variant-east-asian:normal;line-height:21px"></div></div><br>______________________________<wbr>_________________<br>
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