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<p style="margin-bottom: 0in;">Dear Gate Users,</p><br>Somebody know how we can mimic the
patient move during acquisition? We would like to do this for
demonstrate artifacts by movements. We tried with the wobbling
function but we don't have successful because the source wasn't
confine with phantom during movement.
<p style="margin-bottom: 0in;">Could you help us?<br></p><p style="margin-bottom: 0in;">Thanks,
</p><p style="margin-bottom: 0in;">Davi François<br>
</p>
<br><br><br><hr id="stopSpelling">From: davifrancois@hotmail.com<br>To: gate-users@lists.healthgrid.org<br>Date: Mon, 15 Dec 2008 18:23:31 +0000<br>Subject: [Gate-users] Woobling movement error<br><br>
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<p style="margin-bottom: 0in;"><span lang="en-US">Dear Gate Users</span><span lang="en-US">,</span></p><span lang="en-US"><br>We</span><span lang="en-US">
were run a script with confine source function and it’s doesn’t
work when we confine this source with a phantom (attenuation’s
object) when these move with the wobbling function. We liked to use
the wobbling function for mimic the patient motion for product
artifacts in x plane. The script with this is show below:</span><br><br><p style="margin-bottom: 0in;" lang="en-US"># PHANTOM</p>
<p style="margin-bottom: 0in;" lang="en-US"># Create the phantom
volume</p>
<p style="margin-bottom: 0in;" lang="en-US">/gate/world/daughters/name
Phantom</p>
<p style="margin-bottom: 0in;" lang="en-US">/gate/world/daughters/insert
cylinder</p><br><p style="margin-bottom: 0in;" lang="en-US"># Define the dimensions of
the phantom volume</p>
<p style="margin-bottom: 0in;" lang="en-US">/gate/Phantom/geometry/setRmax
5. cm</p>
<p style="margin-bottom: 0in;" lang="en-US">/gate/Phantom/geometry/setRmin
0. cm</p>
<p style="margin-bottom: 0in;" lang="en-US">/gate/Phantom/geometry/setHeight
20. cm</p><br><p style="margin-bottom: 0in;" lang="en-US"># Define the position of
the phantom volume</p>
<p style="margin-bottom: 0in;"><span lang="en-US">/gate/Phantom/placement/setTranslation
0. 0. 0. cm</span></p><br><p style="margin-bottom: 0in;"><span lang="en-US">/gate/ </span><span lang="en-US">Phantom
/moves/insert osc-trans</span></p>
<p style="margin-bottom: 0in;"><span lang="en-US">/gate/ Phantom
/osc-trans/setAmplitude 10. 0. 0. cm</span></p>
<p style="margin-bottom: 0in;"><span lang="en-US">/gate/ Phantom
/osc-trans/setFrequency 50 Hz</span></p>
<p style="margin-bottom: 0in;"><span lang="en-US">/gate/ Phantom
/osc-trans/setPeriod 1 s</span></p>
<p style="margin-bottom: 0in;"><span lang="en-US">/gate/ Phantom
/osc-trans/setPhase 90 deg</span></p><br><p style="margin-bottom: 0in;" lang="en-US"># Set the material
corresponding to the phantom volume</p>
<p style="margin-bottom: 0in;" lang="en-US">/gate/Phantom/setMaterial
Water</p>
<p style="margin-bottom: 0in;" lang="en-US">#/gate/Phantom/setMaterial
Air</p><br><p style="margin-bottom: 0in;" lang="en-US"># Define some
visualisation options</p>
<p style="margin-bottom: 0in;" lang="en-US">/gate/Phantom/vis/setColor
blue</p>
<p style="margin-bottom: 0in;" lang="en-US">/gate/Phantom/vis/forceWireframe</p><br><p style="margin-bottom: 0in;" lang="en-US"># Attach PhantomSD to
record Compton interactions in the phantom volume</p>
<p style="margin-bottom: 0in;" lang="en-US">/gate/Phantom/attachPhantomSD</p><br><p style="margin-bottom: 0in;" lang="en-US"># SOURCE</p>
<p style="margin-bottom: 0in;" lang="en-US"># Add an extra object for
source confinement</p>
<p style="margin-bottom: 0in;" lang="en-US">/gate/Phantom/daughters/name
movsource</p>
<p style="margin-bottom: 0in;" lang="en-US">/gate/Phantom/daughters/insert
cylinder</p><br><p style="margin-bottom: 0in;" lang="en-US"># Define the dimensions of
the source volume</p>
<p style="margin-bottom: 0in;" lang="en-US">/gate/movsource/geometry/setRmax
2. cm</p>
<p style="margin-bottom: 0in;" lang="en-US">/gate/movsource/geometry/setRmin
0. cm</p>
<p style="margin-bottom: 0in;" lang="en-US">/gate/movsource/geometry/setHeight
5. cm</p>
<p style="margin-bottom: 0in;"><span lang="en-US">/gate/movsource/placement/setTranslation
0. 0. 0. cm</span></p><br><p style="margin-bottom: 0in;" lang="en-US">When we confined the
source with the phantom and then we input the woobling movement with
10 cm for amplitude, the phantom moves well but the source was in the
same local.
</p>
<p style="margin-bottom: 0in;"><span lang="en-US">Do you have idea
about what is wrong? Or this function doesn´t work with
confinement.</span></p><br>Regards<br><br>Davi Ezequiel François<br> <br>NIMed - Núcleo de Pesquisas em Imagens Médicas<br>Pontifícia Universidade Católica do Rio Grande do Sul<br>Av. Ipiranga 6681 Prédio 96A - sala 220 - Porto Alegre - RS - Brasil CEP 90619-900 - Fone: (55) (51) 3320.3682 R. 7813<br><a href="http://www.pucrs.br/fisica/pesquisas/nimed/index.htm">http://www.pucrs.br/fisica/pesquisas/nimed/index.htm</a><br><a href="http://www.pucrs.br/">http://www.pucrs.br/</a><br><br><br><br><hr>Conheça já o Windows Live Spaces, o site de relacionamentos do Messenger! <a href="http://www.amigosdomessenger.com.br">Crie já o seu!</a><br /><hr />Instale a Barra de Ferramentas com Desktop Search e ganhe EMOTICONS para o Messenger! <a href='http://www.msn.com.br/emoticonpack' target='_new'>É GRÁTIS!</a></body>
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