Behzad Sharif1, Rohan Dharmakumar1, Troy LaBounty1, Chrisandra Shufelt2, Louise EJ Thomson2, Noel Bairey Merz2, Daniel S. Berman2, Debiao Li1
1Biomedical Imaging Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA, United States; 2Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA, United States
A major limitation for first-pass perfusion myocardial MRI is the presence of the so-called dark rim artifacts (DRAs), which may confound interpretation and diagnosis of subendocardial perfusion defects. A major cause of DRAs is known to be Gibbs ringing along the subendocardial border. In this work we demonstrate that projection imaging significantly reduces the prevalence and spatial extent of subendocardial DRAs in first-pass perfusion imaging, compared to conventional Cartesian techniques.