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

Research ArticleEMERGENCY NEURORADIOLOGY
Open Access

Imaging Outcomes of Emergency MR Imaging in Dizziness and Vertigo: A Retrospective Cohort Study

Tatu Happonen, Mikko Nyman, Pauli Ylikotila, Kimmo Mattila and Jussi Hirvonen
American Journal of Neuroradiology April 2024, DOI: https://doi.org/10.3174/ajnr.A8202
Tatu Happonen
aFrom the Department of Radiology (T.H., M.N., K.M., J.H.), Turku University Hospital and University of Turku, Turku, Finland
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  • ORCID record for Tatu Happonen
Mikko Nyman
aFrom the Department of Radiology (T.H., M.N., K.M., J.H.), Turku University Hospital and University of Turku, Turku, Finland
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Pauli Ylikotila
bNeurocenter (P.Y.), Turku University Hospital and University of Turku, Turku, Finland
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Kimmo Mattila
aFrom the Department of Radiology (T.H., M.N., K.M., J.H.), Turku University Hospital and University of Turku, Turku, Finland
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Jussi Hirvonen
aFrom the Department of Radiology (T.H., M.N., K.M., J.H.), Turku University Hospital and University of Turku, Turku, Finland
cDepartment of Radiology (J.H.), Tampere University Hospital and Tampere University, Tampere, Finland
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    FIG 1.

    Statistical test values between dichotomic imaging outcome groups. Only values with statistical significance (P < .05) are shown. The χ2 test was used for categoric variables, and the Mann-Whitney U test, for continuous variables.

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    FIG 2.

    A, Variables predicting significant acute pathology (AIS/S versus NS) in emergency MR imaging with statistical significance (P < .05) in a multivariate analysis. B, Variables predicting acute ischemic stroke (AIS versus S/NS) in emergency MR imaging with statistical significance (P < .05) in a multivariate analysis.

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    FIG 3.

    Risk score point distributions for both scores within imaging outcome groups.

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    Table 1:

    Significant-but-nonischemic emergency MR imaging findingsa

    FindingsNo. (%)
    Tumor/metastases44 (45)
    Demyelination12 (12)
    Infection, inflammation19 (19)
    Other9 (9)
    Vascular diseases
     Intracranial hemorrhage6 (6)
     Other7 (7)
    Total97 (100)
    • ↵a Data are numbers (percentages).

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    Table 2:

    Nonsignificant emergency MR imaging findingsa

    FindingsNo. (%)
    Unremarkable368 (42)
    White matter hyperintensities256 (29)
    Benign incidental/variants143 (16)
    Known existing pathology
     Old infarcts/bleeds105 (12)
     Other3 (0)
    Total875 (100)
    • ↵a Data are numbers (percentages).

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Imaging Outcomes of Emergency MR Imaging in Dizziness and Vertigo: A Retrospective Cohort Study
Tatu Happonen, Mikko Nyman, Pauli Ylikotila, Kimmo Mattila, Jussi Hirvonen
American Journal of Neuroradiology Apr 2024, DOI: 10.3174/ajnr.A8202
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Cite this article
Tatu Happonen, Mikko Nyman, Pauli Ylikotila, Kimmo Mattila, Jussi Hirvonen
Imaging Outcomes of Emergency MR Imaging in Dizziness and Vertigo: A Retrospective Cohort Study
American Journal of Neuroradiology Apr 2024, DOI: 10.3174/ajnr.A8202

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