Computed tomography
From UCL HEP PBT Wiki
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== <span style="color:#000080"> Introduction </span> == | == <span style="color:#000080"> Introduction </span> == | ||
| - | This tutorial is based on the GEANT4 DICOM example originally developed by Louis Archambault, Luc Beaulieu and Vincent Hubert-Tremblay. In this example a list of DICOM files (.dcm) are converted to ASCII files (.g4dcm) and binary (.g4bin) that can be read by GEANT4. Each of these files corresponds to a Z slice. Then, the .g4dcm (.g4bin) files are merged into one unique volume and used by GEANT4 to construct | + | This tutorial is based on the GEANT4 DICOM example originally developed by Louis Archambault, Luc Beaulieu and Vincent Hubert-Tremblay. In this example a list of DICOM files (.dcm) are converted to ASCII files (.g4dcm) and binary (.g4bin) that can be read by GEANT4. Each of these files corresponds to a Z slice. Then, the .g4dcm (.g4bin) files are merged into one unique volume and used by GEANT4 to construct patient geometry and materials. |
The geometry is constructed by voxelizing the volume. There are four navigation algorithms used to create the voxel geometry: '''G4RegularNavigation''', '''G4VNestedParameterisation''', '''G4SmartVoxel'''/'''G4VoxelNavigation''' and '''G4PVReplica'''. | The geometry is constructed by voxelizing the volume. There are four navigation algorithms used to create the voxel geometry: '''G4RegularNavigation''', '''G4VNestedParameterisation''', '''G4SmartVoxel'''/'''G4VoxelNavigation''' and '''G4PVReplica'''. | ||
