Comparison of T1 measurement using ISMRM/NIST system phantom

Published: May 09, 2016


Kathryn E. Keenan, Karl F. Stupic, Michael A. Boss, Stephen E. Russek, Thomas L. Chenevert, Pottumarthi V. Prasad, Wilburn E. Reddick, Jie Zheng, Peng Hu, Edward F. Jackson


We used the ISMRM/NIST system phantom to assess variations of T1 measurements across MRI systems at 1.5 T and 3 T, to determine the repeatability and reproducibility of the T1 measurements. This study demonstrates that T1 variations from NMR-measured value are correlated site-to-site within a vendor and by position within the head coil. The deviation from the NMR-measured values is greater at 3 T than at 1.5 T. The VFA data has a larger variation than IR; B1 inhomogeneity could contribute to the larger systematic error in VFA measurements. The ISMRM/NIST system phantom is an excellent tool for evaluating multi-site MRI acquisition protocols.
Proceedings Title: Proceedings of the International Society of Magnetic Resonance in Medicine
Issue: Program #3290
Conference Dates: May 9-16, 2016
Conference Location: Singapore, -1
Conference Title: ISMRM 24th Annual Meeting
Pub Type: Conferences

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magnetic imaging, measurement variability, medical imaging
Created May 09, 2016, Updated February 19, 2017