文章基本信息

标题：From signal-based to comprehensive magnetic resonance imaging
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作者：Gyula Kotek ; Laura Nunez-Gonzalez ; Mika W. Vogel 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2021
卷号：11
DOI：10.1038/s41598-021-96791-w
语种：English
出版社：Springer Nature
摘要：We present and evaluate a new insight into magnetic resonance imaging (MRI). It is based on the algebraic description of the magnetization during the transient response—including intrinsic magnetic resonance parameters such as longitudinal and transverse relaxation times (T 1, T 2) and proton density (PD) and experimental conditions such as radiofrequency field (B 1) and constant/homogeneous magnetic field (B 0) from associated scanners. We exploit the correspondence among three different elements: the signal evolution as a result of a repetitive sequence of blocks of radiofrequency excitation pulses and encoding gradients, the continuous Bloch equations and the mathematical description of a sequence as a linear system. This approach simultaneously provides, in a single measurement, all quantitative parameters of interest as well as associated system imperfections. Finally, we demonstrate the in-vivo applicability of the new concept on a clinical MRI scanner.