Abstract #3492

Evaluation of MR Fingerprinting at 0.55T

Zhibo S. Zhu¹, Nam Gyun Lee², Ye Tian¹, Ahsan Javed³, Mark Griswold⁴, Adrienne Campbell-Washburn³, and Krishna S. Nayak¹

¹Department Of Electrical and Computer Engineering, University of Southern California, Los Angeles, CA, United States, ²Department Of Biomedical Engineering, University of Southern California, Los Angeles, CA, United States, ³Division of Intramural Research, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, United States, ⁴Department of Radiology, Case Western Reserve University, Cleveland, OH, United States

Synopsis

We perform a thorough comparison of MRF with reference relaxometry approaches on a NIST/ISMRM phantom and a healthy volunteer. In the NIST phantom, relative bias from -4.7% to 27.7% for the NiCl₂ vials and from 5.01% to 28% for the MnCl₂ vials within a biological relevant T₁ and T₂ range. In-vivo, MRF has good repeatability (variations <2%) but substantial bias in WM and GM against the reference approach.

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