Gradient pre-emphasis to counteract first-order concomitant fields on asymmetric MRI gradient systems
نویسندگان
چکیده
منابع مشابه
The Deleterious Effect of Concomitant Gradient Fields on Diffusion Imaging
through-plane concomitant field phase accrual, for a phantom (squares no correction, triangles corrected) and human brain (circles no correction, diamonds corrected). Dephasing from concomitant gradient fields leads to error in ADC that increases with distance from isocenter (zS = 10cm-superior; zS = 0cm-inferior). FIG 1. Diffusion gradient timing for StejskalTanner (ST; insensitive to concomit...
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Magnetic resonance imaging (MRI) encounters fundamental limits in circumstances in which the static magnetic field is not sufficiently strong to truncate unwanted, so-called concomitant components of the gradient field. This limitation affects the attainable optimal image fidelity and resolution most prominently in low-field imaging. In this article, we introduce the use of pulsed magnetic-fiel...
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ژورنال
عنوان ژورنال: Magnetic Resonance in Medicine
سال: 2016
ISSN: 0740-3194
DOI: 10.1002/mrm.26315