A transformer is an electrical device operating on the principle of mutual induction to change the magnitude of current and voltage.

Transition is the nuclear change from one energy state to another, generally accompanied by the emission of particles or photons.

See Decay.

A tomographic imaging plane, parallel to the ground, perpendicular (rotated 90°) to the long axis of the human body; the transverse plane separates the superior from the inferior part (the head from the feet). Also called axial, transaxial, transversal, horizontal plane.

The trigger delay is the time after triggering at which data acquisition takes place.

Method, which synchronize the data acquisition with the heartbeat or respiration.

See also Gating.