<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hello, <div><br></div><div>don't know if you've fixed your problem already. Don't have that much time to go deeper in your files but at first look, you should probably: </div><div><br></div><div>- complete your beta spectrum. The data you use (density probably) seem correct but you're missing the end of the spectrum at higher energy (check the maximum b energy for 131I). </div><div>- the intensity should correspond to the number of particle that is emitted by each type of particle (around 1 for beta,0.76 for monoenergetic electrons and 1.8 for photons, I think). The value itself is not important. Only the ratio matters. </div><div>- you may also wanna change the position according to you own phantom if this has not been already done. </div><div><br></div><div><br></div><div>What i usually do when i create a new source file is to check the total energy that is deposited in a large high density phantom. If you didn't do all wrong, you should obtain about the same energy as the one that is theoretically emitted (mean). I do it for each source type separately. </div><div><br></div><div>Hope this helps. </div><div><br></div><div>Best regards </div><div><br></div><div>Thibault </div><div><br></div><div><br></div><div>Le 12 nov. 2012 à 19:13, juan camilo bedoya tobon a écrit :</div><div><div><br class="Apple-interchange-newline"><blockquote type="cite"><br><div class="gmail_quote"><div class="gmail_quote"><div><div><div class="gmail_quote"><br>Good afternoon<div><span style="color:rgb(34,34,34);font-size:13px;white-space:nowrap;font-family:arial,sans-serif"><br>
</span></div><div><div class="im"><div style="font-family:arial,sans-serif;font-size:13px"><span style="color:rgb(34,34,34)">My name is Juan Camilo Bedoya, in the moment i am realizing a simulation of the source de 131 I in Gate V 6.1, I was watching the example of internal dosimetry; but i do not undestand how to build a source type histogram.</span><br>
<div><font color="#222222" face="arial, sans-serif"><span style="white-space:nowrap"><br></span></font></div></div></div><div class="im"><div style="font-family:arial,sans-serif;font-size:13px"><div><font color="#222222" face="arial, sans-serif"><span style="white-space:nowrap"> i want I would like to ask your help again, because I still do not understand how to make my source.</span></font></div>
<div><font color="#222222" face="arial, sans-serif"><span style="white-space:nowrap"><br></span></font></div><div><font color="#222222" face="arial, sans-serif"><span style="white-space:nowrap"><div>I send an attached scheme as make the source of I-131; with the data of Nudat (I131.mac), but still I have some doubts:</div>
<div><br></div><div><ol><li style="margin-left:15px">what parameters should I use to build the <span style="white-space:normal"> density probability </span> function in the case of beta decay.</li><li style="margin-left:15px">
I do not understand how to define the parameter setIntensity.</li></ol></div><div><br></div><div>I would like to give me your opinion on this attachment, to correct it if necessary.</div><div><br></div><div>Additionally attached internal dosimetry example I mentioned above. (mac.tar.gz)</div>
<div><br></div><div>I hope I can help.</div><div><br></div><div>thank you very much.</div></span></font></div></div></div></div><div><span style="color:rgb(34,34,34);font-size:13px;white-space:nowrap;font-family:arial,sans-serif"><br>
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<span><I131.mac></span><span><Source Nudat.ods></span><span><mac.tar.gz></span></blockquote></div><br></div></body></html>