A comparison of dual gradient-echo and spin-echo fMRI of the inferior temporal lobe.

@article{Halai2014ACO,
  title={A comparison of dual gradient-echo and spin-echo fMRI of the inferior temporal lobe.},
  author={Ajay D. Halai and Stephen R. Welbourne and Karl V. Embleton and Laura M. Parkes},
  journal={Human brain mapping},
  year={2014},
  volume={35 8},
  pages={4118-28}
}
Magnetic susceptibility differences at tissue interfaces lead to signal loss in conventional gradient-echo (GE) EPI. This poses a problem for fMRI in language and memory paradigms, which activate the most affected regions. Two methods proposed to overcome this are spin-echo EPI and dual GE EPI, where two EPI read-outs are serially collected at a short and longer echo time. The spin-echo method applies a refocusing pulse to recover dephased MR signal due to static field inhomogeneities, but is… CONTINUE READING
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