<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> </head> <body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "> Hi Leo, <div><br> </div> <div>I'm not sure what you mean. Gate can create a cylindrical annulus: a cylinder with a different inner and outer radius. This can be used for either a phantom or a source.</div> <div><br> </div> <div>For example, if you want your source to be inside the phantom, you just have to define your source to be exactly the same shape as the phantom.</div> <div><br> </div> <div>Am I missing something?</div> <div><br> <div apple-content-edited="true"><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; border-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "> <div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "> <div>Marc</div> <div><br> </div> <div><br> </div> <div><br> </div> <div>__________________________</div> <div><br> </div> <div>Marc Chamberland, MSc</div> PhD candidate<br> Department of Physics<br> Carleton University<br> Ottawa (ON)</div> </span></div> <br> <div> <div>On 2013-06-28, at 7:56 AM, Leo Read <<a href="mailto:leoread@gmail.com">leoread@gmail.com</a>></div> <div> wrote:</div> <br class="Apple-interchange-newline"> <blockquote type="cite"> <div dir="ltr"> <div>Hello all,<br> <br> I'm new to Gate (using version 6.2) and it seems like there isn't a simple solution to model the commonly used annulus cylindrical phantom with the source embedded inside. Could somebody please help?<br> <br> Thank you all for your time and assistance.<br> <br> </div> Best regards,<br> Leo<br> </div> _______________________________________________<br> Gate-users mailing list<br> <a href="mailto:Gate-users@lists.opengatecollaboration.org">Gate-users@lists.opengatecollaboration.org</a><br> http://lists.opengatecollaboration.org/mailman/listinfo/gate-users</blockquote> </div> <br> </div> </body> </html>