Alan Christopher O'Connor1,2, Mehdi Hedjazi
Moghari1, Peng Hu1, Dana C. Peters1, Warren
J. Manning1, Reza Nezafat1, Roger Ware Brockett2
1Beth Israel Deaconess Medical Center,
Harvard Medical School, Boston, MA, United States; 2SEAS, Harvard
University, Cambridge, MA, United States
Navigator
gating is an accepted method for reducing the effect of respiratory motion in
cardiac MRI; however, it does not exploit the fact that different spatial
frequencies are more or less sensitive to the respiratory motion. We present a smart motion-adapted averaging
method that retrospectively corrects for respiratory motion by combining data
from k-space lines of multiple acquisitions using weights determined by the
navigator signal.
Keywords