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arXiv · 2007.15495

multiMap: A Gradient Spoiled Sequence for Simultaneously Measuring B1+, B0, T1/M0, T2, T2*, and Fat Fraction of a Slice

Nicholas Dwork·Adam B. Kerr·Ethan M. I. Johnson·Corey A. Baron·Shreyas S. Vasanawala·Peder E. Z. Larson·Adam M. Bush·John Pauly
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Abstract

We propose multiMap, a single scan that can generate several quantitative maps simultaneously. The sequence acquires multiple images in a time-efficient manner, which can be modeled for T_2, T2*, main- and transmit-field inhomogeneity, T_1:equilibrium magnetization, and water and fat content. The sequence is constructed so that cross-dependencies between parameters are isolated. Thus, each parameter can be estimated independently. Estimates of all parameters are shown on bottle phantoms, the brain, and the knee. The results are compared to estimates from established techniques.

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Nicholas Dwork, Adam B. Kerr, Ethan M. I. Johnson, Corey A. Baron, Shreyas S. Vasanawala, Peder E. Z. Larson, Adam M. Bush, John Pauly. 2020-07-30. multiMap: A Gradient Spoiled Sequence for Simultaneously Measuring B1+, B0, T1/M0, T2, T2*, and Fat Fraction of a Slice. https://arxiv.org/abs/2007.15495

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