Abstract #3447

Rapid, real-time phase-contrast MRI using a combination of radial k-space sampling and compressed sensing with spatially varying regularization weights

Hassan Haji-valizadeh¹, Bradley D. Allen², Roberto Sarnari³, Matthew Barrett⁴, and Daniel Kim²

¹Biomedical Engineering, Northwestern University, Evanston, IL, United States, ²Radiology, Northwestern University, Chicago, IL, United States, ³Radiolgy, Northwestern University, Chicago, IL, United States, ⁴Cardiology, Northwestern University, Chicago, IL, United States

We sought to develop a compressed sensing reconstruction method for radial k-space derived real-time phase contrast that uses spatially varying regularization to reduce flickering artifacts without significant loss in quantified flow accuracy, and evaluate its performance with respect to clinical breath-hold phase contrast in patients undergoing aortic valve evaluation with cardiovascular MRI.

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