<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body dir="auto">
<span style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); font-family: -webkit-standard; font-size: medium; -webkit-text-size-adjust: auto;">Hello Xinjie,</span>
<div style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); -webkit-text-size-adjust: auto;">
<br>
</div>
<div style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); -webkit-text-size-adjust: auto;">
As long as there’s no overlapping and every daughter volume is contained within its mother volume, I think things should be fine. In my understanding, the daughters of a volume should not intersect (overlap) with each other. </div>
<div style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); -webkit-text-size-adjust: auto;">
<br>
</div>
<div style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); -webkit-text-size-adjust: auto;">
In your case, is there an overlap? Have you chosen the right mother volume for your air phantom?</div>
<div style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); -webkit-text-size-adjust: auto;">
<br>
</div>
<div style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); -webkit-text-size-adjust: auto;">
Regards</div>
<div style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); -webkit-text-size-adjust: auto;">
<br>
</div>
<div style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); -webkit-text-size-adjust: auto;">
Omar </div>
<div style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); -webkit-text-size-adjust: auto;">
</div>
<br>
<div dir="ltr"><br>
<blockquote type="cite">On Jul 31, 2020, at 3:37 PM, Xinjie Cao <xinjie.cao@stonybrook.edu> wrote:<br>
<br>
</blockquote>
</div>
<blockquote type="cite">
<div dir="ltr">
<div dir="ltr">Dear all,
<div><br>
</div>
<div>I used to implement the hole drilling on a phantom as followed,</div>
<div>```</div>
<div>/gate/world/daughters/name phantom1<br>
/gate/world/daughters/insert cylinder<br>
/gate/phantom1/placement/setTranslation 0.0 0.0 0.0 mm<br>
/gate/phantom1/geometry/setRmax 100. mm<br>
/gate/phantom1/geometry/setHeight 500 mm<br>
/gate/phantom1/setMaterial Polyethylene<br>
#/gate/phantom/vis/forceWireframe<br>
#/gate/phantom/vis/setColor green<br>
/gate/phantom1/attachPhantomSD<br>
<br>
/gate/world/daughters/name phantom2<br>
/gate/world/daughters/insert cylinder<br>
/gate/phantom2/placement/setTranslation 0.0 -25.0 0.0 mm<br>
/gate/phantom2/geometry/setRmax 3.0 mm<br>
/gate/phantom2/geometry/setHeight 500 mm<br>
/gate/phantom2/setMaterial Air<br>
#/gate/phantom/vis/forceWireframe<br>
#/gate/phantom/vis/setColor green<br>
/gate/phantom2/attachPhantomSD<br>
</div>
<div>```</div>
<div>But I have been always thinking whether the air phantom I insert works as the drilled hole? Or does it work as a cylinder mixed with polyethylene and air? </div>
<div>Another way to say is whether a new phantom placed within the other phantom volume will take the place of the original material or mix with it?</div>
<div>Any answer would be highly appreciated! Thanks!</div>
<div><br>
</div>
<div>Best,</div>
<div>Xinjie</div>
</div>
<span>_______________________________________________</span><br>
<span>Gate-users mailing list</span><br>
<span>Gate-users@lists.opengatecollaboration.org</span><br>
<span>http://lists.opengatecollaboration.org/mailman/listinfo/gate-users</span></div>
</blockquote>
</body>
</html>