Fig. 2
From: Respiratory motion correction of PET using MR-constrained PET-PET registration
A coronal slice through a PET emission map showing the lesion positions (left) and an example of a dynamic MR volume (right). There are 9 lesions in total, 3 in the top of the lung (1–3), 3 above the diaphragm (4–6) and 3 in the liver (7–9). These numbers will be used for referring to lesion positions. The VOI used for computing the similarity measure is also displayed. Note that the lesion position image is illustrative: only one lesion is present in each simulation