Generation of an electrical pulse, upon detection of a physiological signal, which can be used to initiate a synchronized data-acquisition pulse sequence.

The time after triggering at which data acquisition takes place.

This type of physiologically controlled imaging suppresses pulsation and flow artifacts. The pulse wave obtained with a finger sensor with a finger sensor is used as the trigger. Pulse sensors are more comfortable to use than ECG electrodes, but less precise.

Method, which synchronize the sequence with the heartbeat. See Cardiac Gating.

Respiratory triggering is a type of respiratory motion commonly used with fast imaging techniques. Images are acquired during the expiration phase. With this type of technique, the scan time is based on the selected TR per respiratory cycle and the patient's breathing patterns.