
72 Statistical Computing in Nuclear Imaging
of single nucleus. The number of trials corresponds to the number of
nuclei
in the voxel. During the imaging time, each of the nuclei “tries” to decay and
has a fixed chance of “succes s” described by the fundamental law described
by Equation (3.4). The binomial distribution describes the probability of ob-
taining some numbe r of successes. The number of successes is indicated as d
and number of trials as r.
Notation: In the following sections and chapters the notatio n would b e
quite convoluted if the dependence on known quantities (KQs) is indicated.
In order to simplify the notation we will no longer indicate ...