Jiangsheng Yu1, Yiqun Xue1,
Hamidreza Saligheh Rad1, Hee Kwon Song1
1Laboratory for Structural NMR Imaging,
Department of Radiology,, University of Pennsylvania, Philadelphia, PA,
United States
Ultra-short
echo time (UTE) MRI has been successfully applied to lung imaging, but so far
the issue of respiratory motion during imaging the lung parenchyma has not
yet been addressed. In this work, a respiratory motion-compensated UTE lung
MRI technique is presented. This technique applies the golden-angle view
increment strategy in conjunction with respiratory self-gating to reconstruct
images at different respiratory phases to reduce respiratory motion
artifacts. The in-vivo results demonstrate that lung image quality is
significantly enhanced with improved visualization and delineation of lung
vasculature, as well as improved SNR, as compared to conventional gradient
echo images.