|Message: Re: G4PhantomParameterisation and daugther volumes||Not Logged In (login)|
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As you probably already know, the other solution, not so elegant but commonly used, is to represent the voxel geometry as simple volumes (no parameterization), replacing just those voxels that have the seed in them with boxes of water containing the seed.
The memory requirements for this approach are much larger than if you can use the special parameterization, but it has been done this way for many papers.