<html><body><div style="font-family: arial, helvetica, sans-serif; font-size: 12pt; color: #000000"><div>Dear Gate users, <br></div><div><br data-mce-bogus="1"></div><div>I have converted my phantom file into unint16 with ImageJ, but I still get the same error message.</div><div>I think it is the native image that is not suitable, it would require CT images coded in UH.<br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><div>Does someone know where I could find a mouse phantom coded in hounsfield unit ?<br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><div>Thank your for your help,<br data-mce-bogus="1"></div><div>Regards,<br data-mce-bogus="1"></div><div>Sarah Blind<br data-mce-bogus="1"></div><div><br></div><hr id="zwchr" data-marker="__DIVIDER__"><div data-marker="__HEADERS__"><b>De: </b>"Sarah Blind" <sarah.blind@univ-lorraine.fr><br><b>À: </b>"gate-users" <gate-users@lists.opengatecollaboration.org><br><b>Envoyé: </b>Lundi 25 Avril 2022 11:27:51<br><b>Objet: </b>problem with voxelized mouse phantom<br></div><div><br></div><div data-marker="__QUOTED_TEXT__"><div style="font-family: arial, helvetica, sans-serif; font-size: 12pt; color: #000000"><div>Dear Gate users,<br></div><br><div>I'm trying to use the mouse phantom from <a href="https://neuroimage.usc.edu/neuro/Digimouse_Download" target="_blank">https://neuroimage.usc.edu/neuro/Digimouse_Download</a>.</div><div>So I have my phantom of the form mouse.hdr , mouse.img and here is my code:<br></div><br><div>1. I name my phantom, open the file and choose the algorithm to track particles from voxel to voxel<br></div><div>2. I convert my image grayscales into material definitions with an units to materials conversion descriptor<br></div><br><blockquote><div>/gate/world/daughters/name mouse<br>/gate/world/daughters/insert ImageRegularParametrisedVolume<br>/gate/mouse/geometry/setImage ../data/mouse.hdr<br><br>/gate/HounsfieldMaterialGenerator/SetMaterialTable ../data/Schneider2000MaterialsTable.txt<br>/gate/HounsfieldMaterialGenerator/SetDensityTable ../data/Schneider2000DensitiesTable.txt<br>/gate/HounsfieldMaterialGenerator/SetDensityTolerance 0.1 g/cm3<br>/gate/HounsfieldMaterialGenerator/SetOutputMaterialDatabaseFilename ../data/patient-HUmaterials.db<br>/gate/HounsfieldMaterialGenerator/SetOutputHUMaterialFilename ../data/patient-HU2mat.txt<br></div></blockquote><br><div>I get the following error message<br></div><blockquote><br><div>GateVImageVolume.cc (l.739): I find R=0 in the image, while range stop at -1<br><br>### WARNING ### setSkipEqualMaterials at false !! The Geant4 method is not safe since the release 9.5 - Need to be fixed<br>Error opening file.<br><br></div></blockquote><div>Does someone has an idea how to solve this problem ?<br></div><br><div>Thank you in advance for your help,<br></div><div>Regards,<br></div><br><div>Sarah Blind</div></div><br></div><div><br></div><div data-marker="__SIG_POST__">-- <br></div><div>Sarah Blind<br>Ingénieure de recherche - CNRS<br>Centre de Recherche en Automatique de Nancy (CRAN) <br>Département Biologie, Signaux et Systèmes en Cancérologie et Neurosciences (BioSiS)<br>Site de la faculté de médecine <br>9, Avenue de la Forêt de Haye <br>54505 Vandoeuvre les Nancy <br>Tél : 03.72.74.61.13</div></div></body></html>