Stanley J. Kruger1, Kevin M. Johnson1, Sean B. Fain1, 2, Robert V. Cadman1, Laura C. Bell1, Scott K. Nagle1, 3
1Medical Physics, University of Wisconsin, Madison, WI, United States; 2Biomedical Engineering, University of Wisconsin, Madison, WI, United States; 3Radiology, University of Wisconsin, Madison, WI, United States
Oxygen Enhanced MRI of lung parenchyma has so far relied on a SSFSE sequence paired with an inversion recovery to mitigate T2* decay and provide ample contrast in the low signal environment. Coverage is often limited, and multiple acquisitions are required to obtain adequate SNR. Radial 3D UTE-SPGR is a new technique in oxygen enhanced MRI that combines oversampling the center of k-space as well as short TE to yield a 3D isotropic volume of oxygen enhanced signal that is robust against cardiac motion artifact and T2* decay, while providing full lung coverage in any orientation.