<div dir="ltr">Dear Gate Users and Experts,<div><br></div><div>I want to validate the Gamma camera intrinsic spatial resolution for which you know <a href="https://opengate.readthedocs.io/en/latest/source_and_particle_management.html#pencil-beam-source">PencilBeam </a>source is required.</div><div><br></div><div>I am using the below scripts for this source which seems to be inaccurate, please have a look on this script and guide me.</div><div><br><font color="#f1c232">/gate/source/addSource                         gps     PencilBeam<br>#/gate/source/gps/type                      PencilBeam<br>/gate/source/gps/setParticleType gamma<br>/gate/source/gps/setPosition 0 0 0 mm<br>/gate/source/gps/setEnergy  140.0 keV<br>/gate/source/gps/setActivity 3.7 MBq<br>/gate/source/gps/setSigmaX 2 mm<br>/gate/source/gps/setSigmaY 2 mm<br>/gate/source/gps/setSigmaTheta 3.3 mrad<br>/gate/source/gps/setSigmaPhi 3.8 mrad<br>/gate/source/gps/setEllipseXThetaEmittance 15 mm*mrad<br>/gate/source/gps/setEllipseXThetaRotationNorm negative<br>/gate/source/gps/setEllipseYPhiEmittance 20 mm*mrad<br>/gate/source/gps/setEllipseYPhiRotationNorm negative</font><br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><br><div><br></div><div><div>Regards</div><div>Khalid Hussain<br></div></div><div>PhD Student, UPM<br></div></div></div></div></div></div></div></div></div><div id="DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2"><br>
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