Message: Slow tracking in voxelized phantom Not Logged In (login)
 Next-in-Thread Next-in-Thread
 Next-in-Forum Next-in-Forum

Question Slow tracking in voxelized phantom 

Forum: Event and Track Management
Date: 29 Sep, 2009
From: Jorge Cabello <Jorge Cabello>

Hi, my specific application is mammography and I am trying to simulate a voxelized phantom (over 5 10^6 voxels) in a typical mammography setup. As expected, tracking of X-ray photons is incredibly slow in this phantom. I have read that this problem is due to the fact that when particles are close to a boundary it has to recalculate the path length with high accuracy, therefore, for a voxelized phantom, it is recalculating the path length continuously. I am aware that this problem is being investigated for applications using GATE by checking if the next voxel is of the same material, thus the boundary is not considered, but I haven't found anything for Geant4. Can anybody hint me where to look at? Thanks Jorge

Inline Depth:
 1 1
 All All
Outline Depth:
 1 1
 2 2
 All All
Add message: (add)

1 Feedback: Re: Slow tracking in voxelized phantom   (Pedro Arce - 29 Sep, 2009)
 Add Message Add Message
to: "Slow tracking in voxelized phantom"

 Subscribe Subscribe

This site runs SLAC HyperNews version 1.11-slac-98, derived from the original HyperNews


[ Geant 4 Home | Geant 4 HyperNews | Search | Request New Forum | Feedback ]