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<span style="margin: 0px; font-size: 10pt; color: rgb(50, 49, 48); background-color: white;">Dear Zhengzhi,</span><br>
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<span style="margin: 0px; font-size: 10pt; color: rgb(50, 49, 48); background-color: white;">You can simulate whatever geometry you want as long as you follow the system architecture of your GATE scanner.</span></div>
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<span style="margin: 0px; font-size: 10pt;">Based on your exemple, you should use the "scanner" type system instead of the "cylindricalPET". </span></div>
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<span style="margin: 0px; font-size: 10pt;">Doing so, you will be able to define your boxes as you want.</span></div>
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<span style="margin: 0px; font-size: 14.67px"><span style="margin: 0px; background-color: white; font-size: 10pt;">Be</span><span style="margin: 0px; background-color: white"><span style="margin: 0px; font-size: 10pt;"> </span></span><span style="margin: 0px; background-color: white; font-size: 10pt;">careful</span><span style="margin: 0px; background-color: white; font-size: 10pt;"> to
define your volumes correctly (daughter) and</span></span><span style="margin: 0px; font-size: 10pt;"> to attach them in the corresponding level (up to five level). </span></div>
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<span style="margin: 0px; font-size: 10pt;">Examples can be find in the documentation here:</span></div>
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<span style="margin: 0px; font-size: 14.67px"><a href="https://opengate.readthedocs.io/en/latest/defining_a_system_scanner_ct_pet_spect_optical.html#how-to-connect-the-geometry-to-a-system" target="_blank" rel="noopener noreferrer" style="margin: 0px"><span style="font-size: 10pt;">https://opengate.readthedocs.io/en/latest/defining_a_system_scanner_ct_pet_spect_optical.html#how-to-connect-the-geometry-to-a-system</span></a></span></div>
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<span style="font-size: 10pt;">Émilie</span></div>
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