Practical estimate of gradient nonlinearity for implementation of apparent diffusion coefficient bias correction.

@article{Malkyarenko2014PracticalEO,
  title={Practical estimate of gradient nonlinearity for implementation of apparent diffusion coefficient bias correction.},
  author={Dariya I Malkyarenko and Thomas L. Chenevert},
  journal={Journal of magnetic resonance imaging : JMRI},
  year={2014},
  volume={40 6},
  pages={1487-95}
}
PURPOSE To describe an efficient procedure to empirically characterize gradient nonlinearity and correct for the corresponding apparent diffusion coefficient (ADC) bias on a clinical magnetic resonance imaging (MRI) scanner. MATERIALS AND METHODS Spatial nonlinearity scalars for individual gradient coils along superior and right directions were estimated via diffusion measurements of an isotropicic e-water phantom. Digital nonlinearity model from an independent scanner, described in the… CONTINUE READING