Off-resonance artifact correction for magnetic resonance imaging: a review [article]

Melissa W. Haskell, Jon-Fredrik Nielsen, Douglas C. Noll
2022 arXiv   pre-print
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
more » ... -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.
arXiv:2205.01028v2 fatcat:iqlpwms4zjdt7pujkkeddvtxce