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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> maikol salas ramirez <mmsalas@gmail.com><br>
<b>Sent:</b> Monday, 26 June 2017 8:46 p.m.<br>
<b>To:</b> Emmanuel Marfo<br>
<b>Subject:</b> Re: 02 [Gate-users] Dose Actor shows empty results</font>
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<div>Hi Emmanuel<br>
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I think, I found the reason, the problem is resolved when you attach the phantom to the scanner, instead to the world.
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Also I found in the actor a typing error with the pixel size.<br>
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I did many changes, in the very beginning I try many things because I never expect that the error was related with the attached volume. But in the other hand I improved your physics library to have a better Dose quantification.<br>
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I did some clean and order just to help me to understand. I change your matrix to image file, you can open it using Fiji-ImajeJ. In any case many something can help you to improve your code, I recommend you don use directly my code version, it is better that
you check and chose what can be useful.<br>
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If you have a question just ask me.<br>
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<div>Best regards<br>
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<div class="gmail_quote">2017-06-23 11:31 GMT+02:00 Emmanuel Marfo <span dir="ltr">
<<a href="mailto:emmanuel.marfo@postgrad.otago.ac.nz" target="_blank">emmanuel.marfo@postgrad.otago.ac.nz</a>></span>:<br>
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<p>Please Sir</p>
<p>Thanks for your quick response.</p>
<p> I have attached all files for your perusal. However, when I remove all my geometry (tubecase, anode, phantom, applied table and Detectorplane) from the gantry((scanner)(cylinder) and without any rotation o it I am able to score dose.</p>
<p>Best regards,</p>
<p>Emmanuel</p>
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<div id="m_496377782288431449divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> maikol salas ramirez <<a href="mailto:mmsalas@gmail.com" target="_blank">mmsalas@gmail.com</a>><br>
<b>Sent:</b> Friday, 23 June 2017 8:16:32 p.m.<br>
<b>To:</b> Emmanuel Marfo<br>
<b>Subject:</b> 02 [Gate-users] Dose Actor shows empty results</font>
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<div dir="ltr">Hi Emmanuel
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<div>As I told you, I work in nuclear medicine. But the principle is the same for your simulation and my simulation, the difference come from the energy spectrum and particles (in my case I simulate electron, photons and alphas). I think that maybe I can help
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<div>From my point of view, there are some possible problem:<br>
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<div>1- Few particles simulated.</div>
<div>2- Few particles reach the sensible volume (dose actor + phantom)</div>
<div>3- Your dose actor it is no well attached to your phantom (interaction medium - patient or water phantom). Something happen that they are not in the same position, and you have to shift your actor matrix.</div>
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<div>Can you share with me your actor and geometry files?</div>
<div>I think, it is a easy way to see in detail what is the problem.</div>
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<div>Best regards</div>
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<div class="gmail_quote">2017-06-23 6:47 GMT+02:00 Emmanuel Marfo <span dir="ltr">
<<a href="mailto:emmanuel.marfo@postgrad.otago.ac.nz" target="_blank">emmanuel.marfo@postgrad.<wbr>otago.ac.nz</a>></span>:<br>
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<p>Dear Gate-Users,</p>
<p>Please, I am dosimetry and I have imported x-ray energy spectrum and using it to score Dose on PMMA phantom. I placed my source in a rotating cylinder name scanner and is to rotate around the phantom where I have a dose Actor to it. The idea behind the rotating
cylinder is to simulate a rotating gantry. The rotation of the cylinder and the source and the simulation work successfully but the dose Actors shows empty results. </p>
<p>Please, has anyone experienced this kind problem before and is there something I can do to solve my problem. Thanks.</p>
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<p>Best regards,</p>
<p>Emmanuel Marfo</p>
<p>University of Otago</p>
<p>Student</p>
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