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AJNR Awards, New Junior Editors, and more. Read the latest AJNR updates

Research ArticleAdult Brain
Open Access

Clinical Experience of 1-Minute Brain MRI Using a Multicontrast EPI Sequence in a Different Scan Environment

K.H. Ryu, H.J. Baek, S. Skare, J.I. Moon, B.H. Choi, S.E. Park, J.Y. Ha, T.B. Kim, M.J. Hwang and T. Sprenger
American Journal of Neuroradiology March 2020, 41 (3) 424-429; DOI: https://doi.org/10.3174/ajnr.A6427
K.H. Ryu
aFrom the Department of Radiology (K.H.R., H.J.B., J.I.M., B.H.C., S.E.P., J.Y.H., T.B.K.), Gyeongsang National University School of Medicine and Gyeongsang National University Changwon Hospital, Changwon, Republic of Korea
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H.J. Baek
aFrom the Department of Radiology (K.H.R., H.J.B., J.I.M., B.H.C., S.E.P., J.Y.H., T.B.K.), Gyeongsang National University School of Medicine and Gyeongsang National University Changwon Hospital, Changwon, Republic of Korea
bDepartment of Radiology (H.J.B.), Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
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S. Skare
cDepartment of Clinical Neuroscience (S.S., T.S.), Karolinska Institute, Stockholm, Sweden
dDepartment of Neuroradiology (S.S.), Karolinska University Hospital, Stockholm, Sweden
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J.I. Moon
aFrom the Department of Radiology (K.H.R., H.J.B., J.I.M., B.H.C., S.E.P., J.Y.H., T.B.K.), Gyeongsang National University School of Medicine and Gyeongsang National University Changwon Hospital, Changwon, Republic of Korea
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B.H. Choi
aFrom the Department of Radiology (K.H.R., H.J.B., J.I.M., B.H.C., S.E.P., J.Y.H., T.B.K.), Gyeongsang National University School of Medicine and Gyeongsang National University Changwon Hospital, Changwon, Republic of Korea
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S.E. Park
aFrom the Department of Radiology (K.H.R., H.J.B., J.I.M., B.H.C., S.E.P., J.Y.H., T.B.K.), Gyeongsang National University School of Medicine and Gyeongsang National University Changwon Hospital, Changwon, Republic of Korea
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J.Y. Ha
aFrom the Department of Radiology (K.H.R., H.J.B., J.I.M., B.H.C., S.E.P., J.Y.H., T.B.K.), Gyeongsang National University School of Medicine and Gyeongsang National University Changwon Hospital, Changwon, Republic of Korea
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T.B. Kim
aFrom the Department of Radiology (K.H.R., H.J.B., J.I.M., B.H.C., S.E.P., J.Y.H., T.B.K.), Gyeongsang National University School of Medicine and Gyeongsang National University Changwon Hospital, Changwon, Republic of Korea
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M.J. Hwang
eMR Applications and Workflow, GE Healthcare (M.J.H.), Seoul, Republic of Korea
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T. Sprenger
cDepartment of Clinical Neuroscience (S.S., T.S.), Karolinska Institute, Stockholm, Sweden
fMR Applied Science Laboratory Europe (T.S.), GE Healthcare Stockholm, Sweden.
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    Fig 1.

    A 59-year-old woman with intracranial hemorrhage. A right thalamic hemorrhage with intraventricular extension to the right lateral ventricle shows mainly hyperintensity on T1-FLAIR (A and G), hyperintensity on T2WI (B and H) and T2-FLAIR (C and I), blooming artifacts on T2*WI (D) and SWAN (J), and diffusion restriction on DWI (E and K) (arrows in each sequence). These findings are well-visualized on both EPIMix MR imaging (A–F) and routine MR imaging (G–L).

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    Fig 2.

    A 48-year-old woman with brain abscesses. There are 2 irregularly shaped masslike lesions with perilesional edema in the right temporal lobe. The internal content shows hypointensity on T1-FLAIR (A and G) and hyperintensity on T2WI (B and H) and T2-FLAIR (C and I) (arrows). The internal content shows diffusion restriction on DWI (E and K) (arrows). There are blooming artifacts on T2*WI (D) and SWAN (J) (arrows). These findings are well-visualized on both EPIMix MR imaging (A–F) and routine MR imaging (G–L).

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    Fig 3.

    A 52-year-old man with Wernicke encephalopathy. Signal changes in the tectal plate of the midbrain and periaqueductal gray matter showing hypointensity on T1-FLAIR (A and G), hyperintensity on T2WI (B and H) and T2-FLAIR (C and I), and hyperintensity on DWI (E and K) are well-visualized on both EPIMix MR imaging (A–F) and routine MR imaging (G–L) (arrows in each sequence).

Tables

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  • Acquisition parameters of EPIMix and routine protocols

    Imaging ParameterEPIMix MR ImagingRoutine Brain MR Imaging
    T1-FLAIRT2WIT2-FLAIRDWIT2*WIT1-FLAIRT2WIT2-FLAIRDWISWAN
    FOV (cm)24242424242222222222
    Section thickness (mm)5555555551.2
    TR (ms)13002447581824472542240051759000541732.8
    TI (ms)570.227518502465
    TE (ms)19.310911510930.525.8119.4102.773.122.9
    ETL (ms)5263213
    Frequency matrix180180180180180360512288128288
    Phase matrix180180180180180280512288192260
    Flip angle90°90°90°90°90°90°90°90°90°15°
    Bandwidth (kHz)250250250250250505041.6725041.67
    Parallel imaging acceleration factorARC 3ARC 3ASSET 2.5ASSET 2.5
    Net scan time (min:sec)1:121:582:292:251:192:33
    Total scan time (min:sec)1:281:582:562:491:372:39
    • Note:—ARC indicates autocalibrating reconstruction for Cartesian imaging; ASSET, array spatial sensitivity encoding technique; ETL, echo-train length.

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American Journal of Neuroradiology: 41 (3)
American Journal of Neuroradiology
Vol. 41, Issue 3
1 Mar 2020
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K.H. Ryu, H.J. Baek, S. Skare, J.I. Moon, B.H. Choi, S.E. Park, J.Y. Ha, T.B. Kim, M.J. Hwang, T. Sprenger
Clinical Experience of 1-Minute Brain MRI Using a Multicontrast EPI Sequence in a Different Scan Environment
American Journal of Neuroradiology Mar 2020, 41 (3) 424-429; DOI: 10.3174/ajnr.A6427

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Clinical Experience of 1-Minute Brain MRI Using a Multicontrast EPI Sequence in a Different Scan Environment
K.H. Ryu, H.J. Baek, S. Skare, J.I. Moon, B.H. Choi, S.E. Park, J.Y. Ha, T.B. Kim, M.J. Hwang, T. Sprenger
American Journal of Neuroradiology Mar 2020, 41 (3) 424-429; DOI: 10.3174/ajnr.A6427
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