Respiratory Self-gated 4D Coronary MRA
Li D, Park J, Carr J, Larson A, Lai P
The purpose of this work was to investigate the feasibility of a respiratory self-gating (RSG) technique for free-breathing 3D cine (4D) coronary MRA, which aimed to resolve the respiratory and cardiac motion artefact problem. In our method, real-time RSG signal was derived from direct measurement of heart motion. Volunteer studies and statistical analysis showed the effectiveness of this technique for suppression of respiratory motion. With the capability of achieving phase images over an entire cardiac cycle, the image with best visualization the coronary can be retrospectively selected.