<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Dear Hadi<div class="">It is very general question but if you want to know if a coincidence is random or not, you should consider definition of random coincidences. If gamma quanta which has been detected within time window, are from different annihilation or different sources, we call them random coincidences. By this definition you can have a look to your trees to see if 2 gamma quanta emitted from same source position, then the coincidence is true. If the source position for those gamma quanta are different, then they are random coincidences. For more information I suggest you have a look into this link :</div><div class=""><a href="http://www.opengatecollaboration.org/Materials2015/PracticalExercises2015/VoxelizedSources&Phantoms" class="">http://www.opengatecollaboration.org/Materials2015/PracticalExercises2015/VoxelizedSources%26Phantoms</a></div><div class=""><br class=""></div><div class="">Best regards</div><div class="">MD<br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On 20 Jun 2020, at 18:03, Hadi Rezaei <<a href="mailto:hrezaei.m.ph@gmail.com" class="">hrezaei.m.ph@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">Dear users <div class="">How do random coincidences obtain from ROOT object browser or anyway from root output?</div><div class="">Thank you</div><div class=""><br class=""></div></div>
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