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Cranial Meninges
Anne G. Osborn, MD, FACR
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Terminology

  • Abbreviations

    • Extradural space (EDS)
    • Subdural space (SDS)
    • Subarachnoid space (SAS)
    • Subpial space (SPS)
    • Perivascular space (PVS)
    • Interstitial fluid (ISF)
    • Cerebrospinal fluid (CSF)
    • Internal carotid artery (ICA)
    • External carotid artery (ECA)
  • Definitions

    • Pachymeninges: Dura
    • Leptomeninges: Arachnoid, pia
    • EDS: Potential space between dura, skull; seen only in pathologic conditions (infection, hematoma, etc.)
    • SDS: Potential space between inner dura, arachnoid; seen only in pathologic conditions
    • SAS: Normal CSF-filled space between arachnoid, pial-covered brain
    • SPS: Potential space between pia, glia limitans of cortex
    • PVS: Pial-lined, ISF-filled invagination along penetrating arteries

Gross Anatomy

  • Overview

    Imaging Anatomy

    • Overview

      Anatomy Imaging Issues

      • Imaging Recommendations

        • Imaging Pitfalls

          Related Anatomy
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          Related Differential Diagnoses
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          References
          Tables

          Tables

          Terminology

          • Abbreviations

            • Extradural space (EDS)
            • Subdural space (SDS)
            • Subarachnoid space (SAS)
            • Subpial space (SPS)
            • Perivascular space (PVS)
            • Interstitial fluid (ISF)
            • Cerebrospinal fluid (CSF)
            • Internal carotid artery (ICA)
            • External carotid artery (ECA)
          • Definitions

            • Pachymeninges: Dura
            • Leptomeninges: Arachnoid, pia
            • EDS: Potential space between dura, skull; seen only in pathologic conditions (infection, hematoma, etc.)
            • SDS: Potential space between inner dura, arachnoid; seen only in pathologic conditions
            • SAS: Normal CSF-filled space between arachnoid, pial-covered brain
            • SPS: Potential space between pia, glia limitans of cortex
            • PVS: Pial-lined, ISF-filled invagination along penetrating arteries

          Gross Anatomy

          • Overview

            Imaging Anatomy

            • Overview

              Anatomy Imaging Issues

              • Imaging Recommendations

                • Imaging Pitfalls