Claudio Santelli1, Reza Nezafat1,
Warren J. Manning1,2, Sebastian Kozerke3, Dana C.
Peters1
1Cardiology, Beth Israel Deaconess
Medical Center, Boston, MA , United States; 2Radiology, Beth
Israel Deaconess Medical Center, Boston, MA, United States; 3D-ITET,
ETH Zurich, Institute for Biomedical Engineering, Zurich, Switzerland
We
evaluated the relationship between the respiratory bellows, placed on the
chest, and the abdomen, and the superior-inferior displacement of the
navigator signal, the lung-liver interface, and the heart, in
single-heart-beat ECG-gated images.
The diaphragmatic bellows
correlated better than the chest wall bellows, and bellows correlated best
with the navigator. Using a bellows
based criteria, 3D coronary MRI was reconstructed retrospectively, based on
the bellows data only. Our preliminary
experience suggests that bellows-gating should be revisited.