Abstract #3384

MRI Scanner Characterization with the ISMRM/NIST System Phantom

Stephen E. Russek¹, Michael A. Boss², H. Cecil Charles³, Andrew M. Dienstfrey¹, Jeffrey L. Evelhoch⁴, Jeffrey L. Gunter⁵, Derek L. G. Hill⁶, Edward F. Jackson⁷, Kathryn E. Keenan¹, Guoying Liu⁸, Michele Martin¹, Nikki S. Rentz¹, Karl F. Stupic¹, Chun Yuan⁹, and Zydrunas Gimbutas¹

¹National Institute of Standards and Technology, Boulder, CO, United States, ²American College of Radiology, Philadelphia, PA, United States, ³Duke Image Analysis Laboratory, Durham, NC, United States, ⁴Merck Research Laboratories, West Point, PA, United States, ⁵Mayo Clinic, Rochester, MN, United States, ⁶University College London, London, United Kingdom, ⁷University of Wisconsin, Madison, WI, United States, ⁸National Institute of Biomedical Imaging and Bioengineering, Bethesda, MD, United States, ⁹University of Washington, Seattle, WA, United States

We describe basic scanner characterization and determination of MR-parameter measurement accuracy using the ISMRM/NIST system phantom. The phantom provides a convenient method to measure geometric distortion; the efficacy of non-linear gradient corrections; slice profiles and associated measurement uncertainties; protocol and system dependent resolution contributions; SNR according to NEMA protocols; accuracy of relaxation time; and proton density measurements. The phantom is unique in having SI-traceability, a high level of precision, long-term stability, and monitoring by a national metrology institute.

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