Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Misalignments in co‐registered PET/CT and MRI/MRI images. The mean and range of head motions are plotted, together with the “distances” of the three translational and rotational displacements. The translations of x, y and z are defined as left‐right, superior‐inferior and anterior‐posterior, respectively. The roll and yaw rotations represent the gantry and couch rotations, respectively, while the pitch corresponds to head nodding action.
