<div dir="ltr">Hello, <br><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Nov 3, 2014 at 12:47 PM, Jenny Nilsson <span dir="ltr"><<a href="mailto:jenny.nilsson@radfys.gu.se" target="_blank">jenny.nilsson@radfys.gu.se</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <div style="word-wrap:break-word"> <div style="margin:0px">Dear Gate-users,</div> <div style="margin:0px;min-height:14px"><br> </div> <div style="margin:0px">I have two questions about the PhaseSpaceActor. I’ve searched the mailing-list with no luck.</div> <div style="margin:0px;min-height:14px"><br> </div> <div style="margin:0px">Simulation set-up: A Co-60 point source in the centre of a water-filled sphere, radius 10 cm. Centre of sphere at (0,0,0). The Co-60 source is defined as an ion source and decays. The world is outside sphere and the PhaseSpaceActor is attached to the world. The table shows data extracted from the root file (the first 12 particle entries).</div> <div style="margin:0px;min-height:14px"><br> </div> <div style="margin:0px">1. At row 0 and 6, there is a particle with kinetic energy 1 MeV at position (0,0,0). Co-60 does not emit 1 MeV particles and the lack of decimals for Ekine and source position (X, Y, Z) makes me believe that this is not a usual particle entry. It seems like every decay starts with this particle. Does anyone know more about the origin of row 0 and 6? </div></div></blockquote><div><br></div><div>no idea, sorry.</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word"> <div style="margin:0px;min-height:14px"><br> </div> <div style="margin:0px">2. From the manual about the PhaseSpaceActor : ”This actor records information about particles entering the volume which the actor is attached to…x. The name of the particle, the kinetic energy, the position along the three axes, the direction along the three axes…” The positions (X, Y, Z) are both inside and outside the volume to which the PhaseSpaceActor is attached. Is the position in the root file the particle position from which it originates, before entering the volume to which the PhaseSpaceActor is attached?</div></div></blockquote><div><br></div><div>yes, by default, this is the location of the preStep, so for entering particle, it can be outside. You can look the exact behavior in the UserSteppingAction of the GatePhaseSpaceActor.cc file. This actor has a lot of options (storeOutgoingParticle, EnableAllStep, UseVolumeFrame etc). I am not sure why this is the preStep here and not the postStep. Maybe could it be interesting to let the user choose with an option ...</div><div><br></div><div>David </div><div><br></div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word"> <div><br> </div> <table border="0" cellpadding="0" cellspacing="0" width="697" style="border-collapse:collapse;width:697pt"> <colgroup><col width="21" style="width:21pt"><col width="66" style="width:66pt"><col width="33" style="width:33pt"><col width="66" span="6" style="width:66pt"><col width="62" style="width:62pt"><col width="63" style="width:63pt"><col width="56" style="width:56pt"></colgroup> <tbody> <tr height="15" style="height:15.0pt"> <td height="15" width="21" style="height:15pt;width:21pt;border:0.5pt solid black;background-color:rgb(217,217,217)"> <font size="3" style="font-family:Calibri"> </font><span style="font-size:12px">Row </span></td> <td width="66" style="width:66pt;border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> Ekine </span></td> <td width="33" style="width:33pt;border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px">Weight </span></td> <td width="66" style="width:66pt;border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> X </span></td> <td width="66" style="width:66pt;border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> Y </span></td> <td width="66" style="width:66pt;border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> Z </span></td> <td width="66" style="width:66pt;border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> dX </span></td> <td width="66" style="width:66pt;border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> dY </span></td> <td width="66" style="width:66pt;border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> dZ </span></td> <td width="62" style="width:62pt;border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> ParticleN </span></td> <td width="63" style="width:63pt;border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> Productio </span></td> <td width="56" style="width:56pt;border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> Productio </span></td> </tr> <tr height="15" style="height:15.0pt"> <td height="15" style="height:15pt;border:0.5pt solid black"> </td> <td style="border:0.5pt solid black"></td> <td style="border:0.5pt solid black"></td> <td style="border:0.5pt solid black"></td> <td style="border:0.5pt solid black"></td> <td style="border:0.5pt solid black"></td> <td style="border:0.5pt solid black"></td> <td style="border:0.5pt solid black"></td> <td style="border:0.5pt solid black"></td> <td style="border:0.5pt solid black"></td> <td style="border:0.5pt solid black"></td> <td style="border:0.5pt solid black"></td> </tr> <tr height="15" style="height:15.0pt"> <td height="15" style="height:15pt;border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px">0</span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px">1</span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px">1</span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px">0</span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px">0</span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px">0</span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> 0.8275845 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> -0.542834 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> -0.142950 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> Co60[0.0] </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> scanner_l </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> </span></td> </tr> <tr height="15" style="height:15.0pt"> <td height="15" style="height:15pt;border:0.5pt solid black"> <span style="font-size:12px">1</span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> 0.1966645 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px">1</span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> 0.0012719 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> -0.000834 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> -0.000219 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> -0.429716 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> 0.4251133 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> -0.796632 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> e- </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> scanner_l </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> Radioacti </span></td> </tr> <tr height="15" style="height:15.0pt"> <td height="15" style="height:15pt;border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px">2</span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> 0.1214847 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px">1</span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> 0.0012719 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> -0.000834 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> -0.000219 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> 0.5730408 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> 0.0333085 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> -0.818849 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> anti_nu_e </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> scanner_l </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> Radioacti </span></td> </tr> <tr height="15" style="height:15.0pt"> <td height="15" style="height:15pt;border:0.5pt solid black"> <span style="font-size:12px">3</span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> 2.727e-06 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px">1</span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> 0.0012719 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> -0.000834 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> -0.000219 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> 0.2551139 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> -0.384539 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> 0.8871561 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> Ni60[2505 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> scanner_l </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> Radioacti </span></td> </tr> <tr height="15" style="height:15.0pt"> <td height="15" style="height:15pt;border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px">4</span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> 1.1732176 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px">1</span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> 0.0012723 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> -0.000834 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> -0.000218 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> -0.960432 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> -0.261985 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> -0.094516 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> gamma </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> scanner_l </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> Radioacti </span></td> </tr> <tr height="15" style="height:15.0pt"> <td height="15" style="height:15pt;border:0.5pt solid black"> <span style="font-size:12px">5</span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> 1.3324921 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px">1</span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> 0.0012723 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> -0.000834 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> -0.000218 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> -0.083264 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> -0.878164 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> 0.4710559 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> gamma </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> scanner_l </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> Radioacti </span></td> </tr> <tr height="15" style="height:15.0pt"> <td height="15" style="height:15pt;border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px">6</span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px">1</span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px">1</span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px">0</span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px">0</span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px">0</span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> 0.8887608 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> 0.0749674 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> 0.4521991 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> Co60[0.0] </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> scanner_l </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> Radioacti </span></td> </tr> <tr height="15" style="height:15.0pt"> <td height="15" style="height:15pt;border:0.5pt solid black"> <span style="font-size:12px">7</span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> 0.0789978 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px">1</span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> 0.0013659 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> 0.0001152 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> 0.0006949 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> 0.0645403 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> -0.209042 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> -0.975774 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> e- </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> scanner_l </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> Radioacti </span></td> </tr> <tr height="15" style="height:15.0pt"> <td height="15" style="height:15pt;border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px">8</span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> 0.2391535 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px">1</span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> 0.0013659 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> 0.0001152 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> 0.0006949 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> 0.6967408 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> 0.5879607 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> 0.4109191 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> anti_nu_e </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> scanner_l </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> Radioacti </span></td> </tr> <tr height="15" style="height:15.0pt"> <td height="15" style="height:15pt;border:0.5pt solid black"> <span style="font-size:12px">9</span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> 6.863e-07 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px">1</span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> 0.0013659 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> 0.0001152 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> 0.0006949 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> -0.670755 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> -0.285273 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> 0.6846210 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> Ni60[2505 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> scanner_l </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> Radioacti </span></td> </tr> <tr height="15" style="height:15.0pt"> <td height="15" style="height:15pt;border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px">10</span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> 1.1732176 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px">1</span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> 0.0013653 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> 0.0001149 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> 0.0006956 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> 0.6809428 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> 0.4493534 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> -0.578271 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> gamma </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> scanner_l </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> Radioacti </span></td> </tr> <tr height="15" style="height:15.0pt"> <td height="15" style="height:15pt;border:0.5pt solid black"> <span style="font-size:12px">11</span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> 0.0083415 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px">1</span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> 50.464988 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> 33.301002 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> -42.85412 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> -0.179916 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> -0.516923 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> -0.836910 </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> e- </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> scanner_l </span></td> <td style="border:0.5pt solid black"><span style="font-size:12px"> Compton </span></td> </tr> <tr height="15" style="height:15.0pt"> <td height="15" style="height:15pt;border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px">12</span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> 1.3324921 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px">1</span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> 0.0013653 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> 0.0001149 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> 0.0006956 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> 0.7317848 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> 0.6797550 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> -0.049233 </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> gamma </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> scanner_l </span></td> <td style="border:0.5pt solid black;background-color:rgb(217,217,217)"> <span style="font-size:12px"> Radioacti </span></td> </tr> </tbody> </table> <div><font size="1"><br> </font></div> <div>Best regards,</div> <div>Jenny Nilsson</div> <div><br> </div> <div>======================================</div> <div> <div>Jenny Nilsson Ph. D.</div> <div>Institute of Clinical Sciences</div> <div>Department of Radiation Physics </div> <div>University of Gothenburg Sweden</div> <div><br> </div> </div> <div><br> </div> </div> <br>_______________________________________________<br> Gate-users mailing list<br> <a href="mailto:Gate-users@lists.opengatecollaboration.org">Gate-users@lists.opengatecollaboration.org</a><br> <a href="http://lists.opengatecollaboration.org/mailman/listinfo/gate-users" target="_blank">http://lists.opengatecollaboration.org/mailman/listinfo/gate-users</a><br></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr">David Sarrut, Phd<br>Directeur de recherche CNRS<br>CREATIS, UMR CNRS 5220, Inserm U 1044<div>Centre de lutte contre le cancer Léon Bérard<br>28 rue Laënnec, 69373 Lyon cedex 08<br>Tel : 04 78 78 51 51 / 06 74 72 05 42<br><a href="http://www.creatis.insa-lyon.fr/~dsarrut" target="_blank">http://www.creatis.insa-lyon.fr/~dsarrut</a><br>_________________________________</div><div> "2 + 2 = 5, for extremely large values of 2"<br>_________________________________</div></div></div> </div></div>