<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div style="margin: 0px; text-align: justify; line-height: normal; -webkit-text-stroke-color: rgb(0, 0, 0); -webkit-text-stroke-width: initial;" class=""><span style="-webkit-font-kerning: none;" class="">Hello,</span></div><div style="margin: 0px; text-align: justify; line-height: normal; -webkit-text-stroke-color: rgb(0, 0, 0); -webkit-text-stroke-width: initial; min-height: 13px;" class=""><span style="font-kerning: none" class=""></span><br class=""></div><div style="margin: 0px; text-align: justify; line-height: normal; -webkit-text-stroke-color: rgb(0, 0, 0); -webkit-text-stroke-width: initial;" class=""><span style="font-kerning: none" class="">I’m using VV software for Positron Emission Tomography image processing. I have DICOM PET images with the associated ROIs (= RT-Struct DICOM format). I wanted to use the clitkDicomRTStruct2Image command to export the ROIs in binary image (nifty format), and I met two problems:</span></div><div style="margin: 0px; text-align: justify; line-height: normal; -webkit-text-stroke-color: rgb(0, 0, 0); -webkit-text-stroke-width: initial; min-height: 13px;" class=""><span style="font-kerning: none" class=""></span><br class=""></div><div style="margin: 0px; text-align: justify; line-height: normal; -webkit-text-stroke-color: rgb(0, 0, 0); -webkit-text-stroke-width: initial;" class=""><span style="font-kerning: none" class="">1. I used 2 different versions of vtk (vtk5 and vtk6) for this work, and the result was not the same according to the versions. There is a shift of one slice between the two output binary images (for the exact same input image (PET + RT-Struct)).</span></div><div style="margin: 0px; text-align: justify; line-height: normal; -webkit-text-stroke-color: rgb(0, 0, 0); -webkit-text-stroke-width: initial;" class=""><span style="font-kerning: none" class="">I visualized and compared the 3 ROIs images (the RT-Struct and the two nifty images) on the 3DSlicer software, and the offset remains: the binary image made with the vtk5 version matches with the RT-Struct DICOM image, but the binary image made with vtk6 is shifted compare to the others. </span></div><div style="margin: 0px; line-height: normal; -webkit-text-stroke-color: rgb(0, 0, 0); -webkit-text-stroke-width: initial; min-height: 13px;" class=""><br class=""><span style="font-kerning: none" class=""></span></div><div style="margin: 0px; line-height: normal; -webkit-text-stroke-color: rgb(0, 0, 0); -webkit-text-stroke-width: initial;" class=""><span style="font-kerning: none" class="">2. Moreover, comparing the ROIs images on 3DSlicer, I also noticed that the shape was not the same between the RT-Struct and the binary images converted with the clitk tool. </span></div><div style="margin: 0px; line-height: normal; -webkit-text-stroke-color: rgb(0, 0, 0); -webkit-text-stroke-width: initial; min-height: 13px;" class=""><span style="font-kerning: none" class=""></span><br class=""></div><div style="margin: 0px; line-height: normal; -webkit-text-stroke-color: rgb(0, 0, 0); -webkit-text-stroke-width: initial;" class=""><span style="font-kerning: none" class="">Have you got any idea why I have such differences ?</span></div><div style="margin: 0px; line-height: normal; -webkit-text-stroke-color: rgb(0, 0, 0); -webkit-text-stroke-width: initial;" class=""><span style="font-kerning: none" class="">You can find the PET Image with the RT-Struct associated and the resulting binary ROI images on this download link: <a href="https://cloud.u-bourgogne.fr/index.php/s/IV9t9ksgMTHjhxD" class="">https://cloud.u-bourgogne.fr/index.php/s/IV9t9ksgMTHjhxD</a> .</span></div><div style="margin: 0px; line-height: normal; -webkit-text-stroke-color: rgb(0, 0, 0); -webkit-text-stroke-width: initial; min-height: 13px;" class=""><span style="font-kerning: none" class=""></span><br class=""></div><div style="margin: 0px; line-height: normal; -webkit-text-stroke-color: rgb(0, 0, 0); -webkit-text-stroke-width: initial;" class=""><span style="font-kerning: none" class="">Thank you in advance for your help,</span></div><div style="margin: 0px; line-height: normal; -webkit-text-stroke-color: rgb(0, 0, 0); -webkit-text-stroke-width: initial;" class=""><span style="-webkit-font-kerning: none;" class="">Regards,</span></div><div class=""><span style="font-kerning: none" class=""><br class=""></span></div><div class="">
<div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">Nérée PAYAN</div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">PhD Student, University of Burgundy<br class=""><br class="">LE2i Laboratory, Health and Medical Imaging Department,<br class="">UFR Sciences et Techniques,<br class="">Allée Alain Savary, </div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">21000 Dijon, France<br class=""><br class=""><a href="mailto:nerea.payan@u-bourgogne.fr" class="">nerea.payan@u-bourgogne.fr</a><br class="">Tel : +33 (0)6 68 82 54 67</div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><br class=""></div><br class="Apple-interchange-newline"></div><br class="Apple-interchange-newline">
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