
194 Statistical Computing in Nuclear Imaging
6.2.1 SIMPLE TOMOGRAPHIC SYSTEM (STS)
T
he three-voxel model of tomographic system will b e used to demo nstrate
va rious potential a pplications of the theory presented in this book. A similar
system was already introduced in Chapter 3. Here, we slightly generalize the
STS to K detector elements (when introduced in Example 3.2 K was fixed to
3). No restrictions on values o f the elements of the system matrix are used.
Using these assumptions the STS is visualized in Figure 6.5. The voxels are
indicated by c
1
, d
1
, r
1
(voxel 1), c
2
, d
2
, r
2
(voxel 2), and c
3
, d
3
, r
3
(voxel 3)
which correspond to the number of e vents ...