[Gate-users] pinhole collimator

[K.Alzimami at surrey.ac.uk]

Hello Gilberto,
 
I have not tried pinhole but I think it is possible by making one hole as cone shape. You can refer to creating volume section in GATE user guide, there is a table explaining cone shape.
 
Good luck
 
---------------------------------------------------------------
Khalid Alzimami
Department of Physics 
School of Electronics & Physical Sciences
University of Surrey
Guildford, 
GU2 7XH 
UK
tel. +44-1483-689423
fax. +44-1483-682724 

________________________________

From: gate-users-bounces at lists.healthgrid.org on behalf of Gilberto Almeida
Sent: Fri 08/02/2008 14:10
To: gate-users at lists.healthgrid.org
Subject: [Gate-users] pinhole collimator



Hello gate users,
 
I'm a newcomer with GATE, and my first big problem is how to parameterize a pinhole collimator in SPECT Head... I've searched everywhere but haven't found anything... 
 
 I want to parametrize a pinhole with 0.1cm of height, 0.1cm of radius and 30 degrees of acceptance angle. 
 
 I'm using version 3.1.2 of GATE.
 
 Thank you for your help
 
Gilberto Almeida
Instituto de Biofísica e Engenharia Biomédica
Faculdade de Ciências da Universidade de Lisboa
Campo Grande
1749-016 Lisboa, Portugal

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