voxels.dat 和 gateVoxels.root

1.  什么是voxels.dat文件？

When you build a voxelised source or a voxelized phantom, by default, GATE writes the voxel density values in a file (voxels.dat), to allow a cross-check of what you have loaded. In your macro, you can disable this option : /gate/output/ascii/setOutFileVoxelFlag 0

The format of the file voxels.dat is:

* line 1 : Nx Ny Nz : number of voxels in the three directions,
* line 2 : dx dy dz :size of the voxel in millimeters,
* line 3 to the end: voxel density values.

The order of the voxels is chosen as follow : increase the index along x, then y, then z.

For example for a 2 × 2 × 2 matrix the densities are written in the following order :

• d(0,0,0) d(1,0,0)
• d(0,1,0) d(1,1,0)
• d(0,0,1) d(1,0,1)
• d(0,1,1) d(1,1,1)

2. 什么是gateVoxels.root 文件？

A file gateVoxels.root is also created when using a voxelized phantom in your macro.