Taehoon Shin1, Bosco S. Tjan2, Krishna S. Nayak3
1Electrical Engineering, Stanford University, Stanford, CA, United States; 2Psychology and Neuroscience, University of Southern California, Los Angeles, CA, United States; 3Electrical Engineering, University of Southern California, Los Angeles, CA, United States
First-pass cardiac perfusion MRI often suffers from artifactual sub-endocardial dark rim that lowers diagnostic specificity and limits its routine clinical use. Insufficient spatial resolution and motion during data acquisition have been identified as potential causes of dark rim artifact (DRA). This study uncovers a new potential source of perceived DRA that is rooted in human visual illusion. We demonstrate that DRA can be perceived solely due to visual illusion in the absence of any true signal dip, using numerical phantoms and in-vivo perfusion images.