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Zonal frequency analysis of the gyral and sulcal extent of cerebral infarcts. Part III: Middle cerebral artery and watershed infarcts

  • Diagnostic Neuroradiology
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Abstract

We tested the hypothesis that frequency analysis of the anatomic zones affected by single anterior (A), posterior (P), and middle (M) cerebral artery (CA), multivessel, and watershed infarcts will disclose specific sites (peak zones) most frequently involved by each type, sites most frequently injured by multiple different types (vulnerable zones), and overlapping sites of equal relative frequency for two or more different types of infarct (equal frequency zones). We adopted precise definitions of each vascular territory. CT and MRI studies of 50 MCA, 20 ACA-MCA, three PCA-MCA, and 30 parasagittal watershed infarcts were mapped onto a standard template. Relative infarct frequencies in each zone were analyzed within and across infarct types to identify the centers and peripheries of each, vulnerable zones, and equal frequency zones. These data were then correlated with the prior analysis of 47 ACA, PCA, dual ACA-PCA, and ACA-PCA-MCA infarcts. Zonal frequency data for MCA and watershed infarcts, the sites of peak infarct frequency, the sites of vulnerability to diverse infarcts, and the overlapping sites of equal infarct frequency are tabulated and displayed in standardized format for direct comparison of different infarcts. This method successfully displays the nature, sites, and extent of individual infarct types, illustrates the shifts in zonal frequency and lesion center that attend dual and triple infarcts, and clarifies the relationships among the diverse types of infarct.

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Authors and Affiliations

  1. Department of Radiology, Mount Sinai Medical Center, One Gustave Levy Place, Box 1234, New York, New York, 10029, USA

    T. P. Naidich & M. I. Firestone

  2. Department of Radiology, Westside Regional Medical Center, 8201 West Broward Boulevard, Plantation, Florida, 33324, USA

    J. T. Blum

  3. Department of Radiology, Baptist Hospital of Miami, 8900 North Kendall Drive, Miami, Florida, 33176, USA

    K. J. Abrams

Authors
  1. T. P. Naidich
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  2. M. I. Firestone
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  3. J. T. Blum
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  4. K. J. Abrams
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Correspondence to T. P. Naidich.

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Naidich, T.P., Firestone, M.I., Blum, J.T. et al. Zonal frequency analysis of the gyral and sulcal extent of cerebral infarcts. Part III: Middle cerebral artery and watershed infarcts. Neuroradiology 45, 785–792 (2003). https://doi.org/10.1007/s00234-003-1017-x

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  • DOI: https://doi.org/10.1007/s00234-003-1017-x

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