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arXiv · 2205.01028

Off-resonance artifact correction for magnetic resonance imaging: a review

Melissa W. Haskell·Jon-Fredrik Nielsen·Douglas C. Noll
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Abstract

In magnetic resonance imaging (MRI), inhomogeneity in the main magnetic field used for imaging, referred to as off-resonance, can lead to image artifacts ranging from mild to severe depending on the application. Off-resonance artifacts, such as signal loss, geometric distortions, and blurring, can compromise the clinical and scientific utility of MR images. In this review, we describe sources of off-resonance in MRI, how off-resonance affects images, and strategies to prevent and correct for off-resonance. Given recent advances and the great potential of low field and/or portable MRI, we also highlight the advantages and challenges of imaging at low field with respect to off-resonance.

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Melissa W. Haskell, Jon-Fredrik Nielsen, Douglas C. Noll. 2022-05-02. Off-resonance artifact correction for magnetic resonance imaging: a review. https://arxiv.org/abs/2205.01028

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