<div>Hello gate users,</div>
<div> </div>
<div>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... </div>
<div> </div>
<div> I want to parametrize a pinhole with 0.1cm of height, 0.1cm of radius and 30 degrees of acceptance angle. </div>
<div> </div>
<div> I'm using version 3.1.2 of GATE.</div>
<div> </div>
<div> Thank you for your help</div>
<div> </div>
<div>Gilberto Almeida</div>
<div>Instituto de Biofísica e Engenharia Biomédica<br>Faculdade de Ciências da Universidade de Lisboa<br>Campo Grande<br>1749-016 Lisboa, Portugal</div>