[Gate-users] bremsstrahlung

[Delpon Gregory]

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 : +33.2.40.67.99.52 ; fax : +33.2.40.67.97.52
e-mail : g-delpon at nantes.fnclcc.fr


-----Message d'origine-----
De : gate-users-bounces at lists.healthgrid.org
[mailto:gate-users-bounces at lists.healthgrid.org]De la part de
gate-users-request at lists.healthgrid.org
Envoyé : mardi 17 avril 2007 12:00
À : gate-users at lists.healthgrid.org
Objet : Gate-users Digest, Vol 11, Issue 14


Send Gate-users mailing list submissions to
	gate-users at lists.healthgrid.org

To subscribe or unsubscribe via the World Wide Web, visit
	http://lists.healthgrid.org/mailman/listinfo/gate-users
or, via email, send a message with subject or body 'help' to
	gate-users-request at lists.healthgrid.org

You can reach the person managing the list at
	gate-users-owner at lists.healthgrid.org

When replying, please edit your Subject line so it is more specific
than "Re: Contents of Gate-users digest..."


Today's Topics:

   1. voxelised phantom  (Dr.ssa Roberta Matheoud)


----------------------------------------------------------------------

Message: 1
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>
Message-ID: <006301c7801b$d3f9bc20$d5216e0a at dmnmst.aomc>
Content-Type: text/plain; charset="iso-8859-1"

Hi,

 

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 ?



Thanks,



Roberta

 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.healthgrid.org/archives/gate-users/attachments/20070416/6bdd60fb/attachment-0001.html

------------------------------

_______________________________________________
Gate-users mailing list
Gate-users at lists.healthgrid.org
http://lists.healthgrid.org/mailman/listinfo/gate-users


End of Gate-users Digest, Vol 11, Issue 14
******************************************