[Gate-users] bremsstrahlung

Delpon Gregory g-delpon at nantes.fnclcc.fr
Tue Apr 17 12:01:50 CEST 2007

hi all,

do you know how to take into account the anisotropic distribution of bremsstrahlung emission when using an energy spectrum as input?

we have tried to use bias but it does not seem easy to use up to now...

thanks for your help.

Grégory Delpon

Medical Physicist, PhD
Medical Physics Department
CLCC Nantes Atlantique
Bd Jacques Monod, 44805 Saint-Herblain, France
tel : + ; fax : +
e-mail : g-delpon at nantes.fnclcc.fr

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Today's Topics:

   1. voxelised phantom  (Dr.ssa Roberta Matheoud)


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Date: Mon, 16 Apr 2007 13:39:00 +0200
From: "Dr.ssa Roberta Matheoud"
	<roberta.matheoud at maggioreosp.novara.it>
Subject: [Gate-users] voxelised phantom 
To: <Gate-users at lists.healthgrid.org>
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I am trying to define a voxelised phantom and I need to set the range of the materials that are present in my phantom.

How shall I define the attenuation ranges of the materials ? To follow the example shown in Clermont-Ferrand last month:


range 0: imagevalue in [0,1000] à material 1

range 1: imagevalue in [1001, 2800] à material 2

range 2: imagevalue in [2801, 9000] à material 3


Does the value in brackets are the HU of my TC file ? If so, how shall I translate this information in the *.dat file ?

Moreover, if a new material has been added in the GateMaterial.db file, this is enough for the range translator ? Does it already knows it or it should be defined somewhere else ?



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