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Hi Tahereh, </div>
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Have you included a file to convert between the voxel values in your image and the materials? I get the same error message if I miss the line </div>
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<div style=""><span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">/gate/patient/PHANTOM_NAME/setHUToMaterialFile </span><span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">PhantomHU2mat.txt,</span></div>
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<div style=""><span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">or if there is a problem with the HU2mat file. The HU2mat file should be a list of voxel value ranges and their corresponding material in your
material file. There are some examples on the GATE Github, e.g. in <a href="https://github.com/OpenGATE/GateContrib/tree/master/dosimetry/doseactor/voxelized-phantom" id="LPlnk353075">https://github.com/OpenGATE/GateContrib/tree/master/dosimetry/doseactor/voxelized-phantom</a></span></div>
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<div style=""><span style=""><span style="">Best wishes, </span></span></div>
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<div style=""><span style=""><span style="">Sophia </span></span></div>
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<b>Subject:</b> Gate-users Digest, Vol 185, Issue 7</font>
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Today's Topics:<br>
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1. Voxelized phantom and source (tahereh zare)<br>
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Message: 1<br>
Date: Fri, 8 Oct 2021 07:29:40 +0200<br>
From: tahereh zare <taherehzare.2965@gmail.com><br>
To: gate-users@lists.opengatecollaboration.org<br>
Subject: [Gate-users] Voxelized phantom and source<br>
Message-ID:<br>
<CACgif-eXFBo82_jLc0S=BiT8qOE+3b-ivt+jz1G9WUsrMDEkqg@mail.gmail.com><br>
Content-Type: text/plain; charset="UTF-8"<br>
<br>
Dear Gate users;<br>
<br>
I'm using Gate version 7.2 on an Oracle VM virtual box machine and I<br>
am trying to simulate a PET scan. I have followed the user's guide<br>
instructions to define the voxelized phantom and source. But I get<br>
this error when running the mac file:<br>
since the release 9.5 - Need to be fixed<br>
Header read from 'hoffman_phantom.h33'<br>
Data file name 'hoffman_phantom.i33'<br>
Nb of planes: 19<br>
Nb of pixels per plane: 196 196<br>
Pixel size: 1.25 1.25<br>
Slice thickness: 10<br>
Matrix size: 245 245<br>
Data type: UNSIGNED INTEGER<br>
Bytes per pixel: 2<br>
Data byte order: LITTLEENDIAN<br>
Machine byte order: LITTLEENDIAN<br>
<br>
[Core-0] "LoadImageMaterialsFromRangeTable" = [<br>
LoadImageMaterialsFromRangeTable ]<br>
GateVImageVolume.cc (l.637): I find R=0 in the image, while range stop at -1<br>
<br>
Error opening file.<br>
LITTLEENDIAN<br>
<br>
Can anyone help me?<br>
Thanks so much<br>
T. Zare<br>
<br>
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