<html><body><div style="font-family: arial, helvetica, sans-serif; font-size: 12pt; color: #000000"><div>Dear Gate users,<br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><div>I'm trying to use the mouse phantom from <a data-mce-href="https://neuroimage.usc.edu/neuro/Digimouse_Download" href="https://neuroimage.usc.edu/neuro/Digimouse_Download">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 data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><div>1. I name my phantom, open the file and choose the algorithm to track particles from voxel to voxel<br data-mce-bogus="1"></div><div>2. I convert my image grayscales into material definitions with an units to materials conversion descriptor<br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><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 data-mce-bogus="1"></div></blockquote><div><br data-mce-bogus="1"></div><div>I get the following error message<br data-mce-bogus="1"></div><blockquote><div><br data-mce-bogus="1"></div><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 data-mce-bogus="1"></div></blockquote><div>Does someone has an idea how to solve this problem ?<br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><div>Thank you in advance for your help,<br data-mce-bogus="1"></div><div>Regards,<br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><div>Sarah Blind<br data-mce-bogus="1"></div></div></body></html>