CCOMP

CCOMP is a technique that uses the cardiac cycle to phase sort the data to minimize pulsatile motion.

CCOMP is very similar to Respiratory Compensation. The cardiac compensated option uses the cardiac waveform as input for sorting the phase-encoding order during data acquisition. It uses the cardiac signal to identify the best phase-encoding order for motion-reduced imaging. Phase steps acquired during the diastolic phase (the quieter phase of the cardiac cycle) fill the center of k-space, and phase steps acquired during the systolic phase fill the outer edges of k-space.

Use CCOMP for breath-hold abdominal images to reduce pulsatile flow artifact. Without CCOMP, pulsatile flow artifact from the aorta is very noticeable.

• CCOMP is available for 2D GRE, SPGR, Fast GRE, and Fast SPGR pulse sequences, in sequential or non-sequential (multi-planar) acquisitions.
• With CCOMP, vessels have a bright appearance with reduced motion artifact.
• CCOMP acquisitions result in more slices than the same parameters with no CCOMP and SAT pulses turned on.