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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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