MedicalVisualization
Volume Data
← Data Format | ● | Voxels →
The modern computed tomography techniques produce a stack of cross sections. Together these represent a volume. Each cross section is stored in the DICOM format in a DICOM data base (known as PACS).
Just a picture element is called pixel, each element of a volume is called Voxel.
Example of a $4x4x4$ volume (cell-centric) resp. $5x5x5$ volume (grid-centric):
Each voxel has the shape of a hexahedron.
Classification of volume data:
- Scalar data (1 value per data point: CT MR)
- Vector data (3 components x,y,z per data point: flow simulationen)
- Tensor data (1 3×3 matrix per data point: fMRI, DTI)
← Data Format | ● | Voxels →