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Research ArticleAdult Brain

Edge-Enhancing Gradient-Echo MP2RAGE for Clinical Epilepsy Imaging at 7T

S. Tao, X. Zhou, E. Greco, V. Gupta, B.E. Freund, E.M. Westerhold, A.M. Feyissa, W.O. Tatum, S. Grewal, V. Patel and E.H. Middlebrooks
American Journal of Neuroradiology March 2023, 44 (3) 268-270; DOI: https://doi.org/10.3174/ajnr.A7782
S. Tao
aFrom the Departments of Radiology (S.T., X.Z., E.G., V.G., E.M.W., V.P., E.H.M.)
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  • ORCID record for S. Tao
X. Zhou
aFrom the Departments of Radiology (S.T., X.Z., E.G., V.G., E.M.W., V.P., E.H.M.)
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E. Greco
aFrom the Departments of Radiology (S.T., X.Z., E.G., V.G., E.M.W., V.P., E.H.M.)
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V. Gupta
aFrom the Departments of Radiology (S.T., X.Z., E.G., V.G., E.M.W., V.P., E.H.M.)
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B.E. Freund
bNeurology (B.E.F., A.M.F., W.O.T.)
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E.M. Westerhold
aFrom the Departments of Radiology (S.T., X.Z., E.G., V.G., E.M.W., V.P., E.H.M.)
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A.M. Feyissa
bNeurology (B.E.F., A.M.F., W.O.T.)
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W.O. Tatum
bNeurology (B.E.F., A.M.F., W.O.T.)
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S. Grewal
cNeurosurgery (S.G., E.H.M.), Mayo Clinic, Jacksonville, Florida
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  • ORCID record for S. Grewal
V. Patel
aFrom the Departments of Radiology (S.T., X.Z., E.G., V.G., E.M.W., V.P., E.H.M.)
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E.H. Middlebrooks
aFrom the Departments of Radiology (S.T., X.Z., E.G., V.G., E.M.W., V.P., E.H.M.)
cNeurosurgery (S.G., E.H.M.), Mayo Clinic, Jacksonville, Florida
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Abstract

SUMMARY: The 3D edge-enhancing gradient-echo (EDGE) MR imaging sequence offers superior contrast-to-noise ratio in the detection of focal cortical dysplasia. EDGE could benefit from 7T MR imaging but also faces challenges such as image inhomogeneity and low acquisition efficiency. We propose an EDGE-MP2RAGE sequence that can provide both EDGE and T1-weighted contrast, simultaneously, improving data-acquisition efficiency. We demonstrate that with sequence optimization, EDGE images with sufficient uniformity and T1-weighted images with high gray-to-white matter contrast can be achieved.

ABBREVIATIONS:

CNR
contrast-to-noise ratio
EDGE
edge-enhancing gradient-echo
FCD
focal cortical dysplasia
INV
inversion imaging
  • © 2023 by American Journal of Neuroradiology
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American Journal of Neuroradiology: 44 (3)
American Journal of Neuroradiology
Vol. 44, Issue 3
1 Mar 2023
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Edge-Enhancing Gradient-Echo MP2RAGE for Clinical Epilepsy Imaging at 7T
S. Tao, X. Zhou, E. Greco, V. Gupta, B.E. Freund, E.M. Westerhold, A.M. Feyissa, W.O. Tatum, S. Grewal, V. Patel, E.H. Middlebrooks
American Journal of Neuroradiology Mar 2023, 44 (3) 268-270; DOI: 10.3174/ajnr.A7782

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Edge-Enhancing Gradient-Echo MP2RAGE for Clinical Epilepsy Imaging at 7T
S. Tao, X. Zhou, E. Greco, V. Gupta, B.E. Freund, E.M. Westerhold, A.M. Feyissa, W.O. Tatum, S. Grewal, V. Patel, E.H. Middlebrooks
American Journal of Neuroradiology Mar 2023, 44 (3) 268-270; DOI: 10.3174/ajnr.A7782
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