[Gate-users] Converting MU to number of particles

[Grevillot Loic]

Dear Mrs Poráková,

In the latest GATE version (8.1), the calibration in MU has been made more generic and you can either provide a plan in number of particles per spot or insert your own calibration curve in number of particles per MU – see documentation<http://wiki.opengatecollaboration.org/index.php/Users_Guide:Source#TPS_Pencil_Beam_source>. I strongly encourage you to migrate to this Gate version or to the GATE-RTion<http://www.opengatecollaboration.org/GateRTion> release.

Best,
Loïc


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From: Gate-users [mailto:gate-users-bounces at lists.opengatecollaboration.org] On Behalf Of Uwe.Pietrzyk
Sent: Thursday, September 27, 2018 9:11 AM
To: Kateřina Poráková <porakovak at seznam.cz>
Cc: gate-users <gate-users at lists.opengatecollaboration.org>
Subject: Re: [Gate-users] Converting MU to number of particles

Dear Mrs Poráková,

I am forwarding your eMail to the gate-users-list, since I am not
an expert in this matter concerning radiation therapy, but I am
sure you will receive an answer from expert users of the GATE
community.

Kind regards and best wishes,

U. Pietrzyk

---------------------------------------
Prof. Dr. Uwe Pietrzyk
Diplom-Physiker
Am Anger 18
50374 Erftstadt
Tel: +49-2235-922038
Fax: +49-2235-922039
Mobil: +49-172-213-2155
eMail: Uwe.Pietrzyk at web.de<mailto:Uwe.Pietrzyk at web.de>
---------------------------------------

On 26. Sep 2018, at 19:25, Kateřina Poráková <porakovak at seznam.cz<mailto:porakovak at seznam.cz>> wrote:

Dear Mr. Pietrzyk,

I would like to ask something about GATE. I am working on my Research task/master thesis and I am using GATE for simulation of radioterapeutic plans. I would like to know, how is number of monitor units (MU) converted to number particles according to stopping power in air. So if you can explain how does the GATE calculate this number. In Gate Users Guide I only found this: "In the "plan description file", each single spot is characterized by its position at treatment isocenter and also by its weight (intensity). By default, the weight corresponds to the number of Monitor Units (MU) delivered and is converted into a number of particles according to the proton stopping power in air."

Thanks in advance,
Kateřina Poráková

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