<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif;font-size:12px">Hello users,<div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif; font-size: 12px;"><div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif; font-size: 16px;"><div class="y_msg_container"><div id="yiv6058843836"><div><div style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif;font-size:12px;"><div dir="ltr">I am simulating a system using 'scanner' system type.</div><div dir="ltr">I defined a box as phantom and one sphere+ one cylinder+ one box inside it.</div><div dir="ltr">a point source of gamma is out of the phantom and not moving but phantom and her 3 daughters are moving.</div><div dir="ltr">strange thing is that
when i add fourth daughter to phantom the source will not work and will not produce any particle!!!!!</div><div dir="ltr">what is wrong?, I ran the CT example and everything was ok. Is it because of 'scanner' system type?</div><div dir="ltr">Thanks for any hint.</div><div dir="ltr">Mohsen<br></div></div></div></div><br><br></div> </div> </div> </div></body></html>