
6 Statistical Computing in Nuclear Imaging
because if we think in ter ms of time, the expe riment has not been perf
ormed
yet. It is therefore easier to associate the BE state with a stage at which the
actual experiment is already performed but simply the results are not yet
revealed. This view of the BEAE concept removes the logica l paradox. The
BEAE concept doe s not address prediction of future e xperiments, but rather
indicates two stages of knowledge about QoIs considered.
Figure 1.2 presents a summary of all quantities introduced in this section.
In this b ook it is assumed that quantities are numbers and in general can be
vectors. All three