Abstract #0313

Ungated, Motion Robust, Simultaneous Cardiac and Liver T2* Quantification via Rosette k-Space Sampling

Adam Michael Bush¹, Christopher Michael Sandino², Shreya Ramachandran³, Nicholas Dwork⁴, Frank Ong¹, Marcus Alley¹, and Shreyas Vasanawala¹

¹Radiology, Stanford University, Palo Alto, CA, United States, ²Electrical Engineering, Stanford University, Palo Alto, CA, United States, ³Electrical Engineering, University of California Berkeley, Berkeley, CA, United States, ⁴Radiology, University of California San Francisco, San Francisco, CA, United States

In this work we introduce a novel method for T2* determination using rosette k-space sampling and locally low-rank reconstruction. This approach produced comparable T2* quantitation with higher spatial resolution, fewer motion artifacts and lessened variability without the use of gating. This approach offers a child-friendly, rapid, free-breathing, comprehensive assessment of liver and cardiac iron.

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