{
  "abstract": "Background Cerebrospinal fluid (CSF) loss in spontaneous intracranial hypotension (SIH) is accompanied by volume shifts between the intracranial compartments. This study investigated tricompartimental and longitudinal volume shifts after closure of a CSF leak.Methods Patients with SIH and suitable pre-therapeutic and post-therapeutic imaging for volumetric analysis were identified from our tertiary care center between 2020 and 2023. The Bern SIH score was calculated. Pre-interventional and post-interventional volumetry encompassed the CSF, parenchymal and venous compartments (ie, venous sinus and choroid plexus volumes).Results In total, 32 patients with SIH (49.7±16.0 years, 22 women) met inclusion criteria. The mean SIH score decreased between baseline (4.5±2.7) and early (2.7±2.3, <7 days after intervention), and also late follow-up (1.4±1.7, follow-up ≥7 days) after leak closure. This was accompanied by a significant increase in ventricular volume from 22.1 to 25.0 mL (P=0.01) at early follow-up, and 23.9 mL at later follow-up (P=0.080). In contrast, venous sinus volumes decreased from 13.8 to 9.6 mL (P=0.016) at early follow-up, and 10.0 mL (P=0.007) at late follow-up. No significant change in mean choroid plexus, total gray or total white matter volume was observed.Conclusions Closure of a spinal CSF leak leads to an early increase in ventricular CSF volume and a decrease in venous sinus volume. The results reflect the long-term convergence of the SIH score to normal values and indicate that permanent closure of a CSF leak induces a stable recompensation of the intracranial compartments without involving significant volume shifts within the cerebral parenchyma.",
  "authors": [
    {
      "affiliations": [
        "Department of Neuroradiology, Medical Center - University of Freiburg, Freiburg, Germany"
      ],
      "name": "Charlotte Zander"
    },
    {
      "affiliations": [
        "Department of Neuroradiology, Medical Center - University of Freiburg, Freiburg, Germany"
      ],
      "name": "Niklas Lützen"
    },
    {
      "affiliations": [
        "Department of Neuroradiology, Medical Center - University of Freiburg, Freiburg, Germany"
      ],
      "name": "Alexander Rau"
    },
    {
      "affiliations": [
        "Department of Neurosurgery, Medical Center - University of Freiburg, Freiburg, Germany"
      ],
      "name": "Katharina Wolf"
    },
    {
      "affiliations": [
        "Department of Radiology, Medical Center - University of Freiburg, Freiburg, Germany"
      ],
      "name": "Philipp Arnold"
    },
    {
      "affiliations": [
        "Department of Neuroradiology, Medical Center - University of Freiburg, Freiburg, Germany"
      ],
      "name": "Hansjörg Mast"
    },
    {
      "affiliations": [
        "Department of Neurosurgery, Medical Center - University of Freiburg, Freiburg, Germany"
      ],
      "name": "Amir El Rahal"
    },
    {
      "affiliations": [
        "Department of Neurosurgery, Medical Center - University of Freiburg, Freiburg, Germany"
      ],
      "name": "Florian Volz"
    },
    {
      "affiliations": [
        "Inselspital University Hospital Bern Institute of Diagnostic and Interventional Neuroradiology, Bern, Switzerland"
      ],
      "name": "Petra Cimflova"
    },
    {
      "affiliations": [
        "Department of Neurosurgery, Medical Center - University of Freiburg, Freiburg, Germany"
      ],
      "name": "Jürgen Beck"
    },
    {
      "affiliations": [
        "Department of Neuroradiology, Medical Center - University of Freiburg, Freiburg, Germany"
      ],
      "name": "Horst Urbach"
    },
    {
      "affiliations": [
        "Department of Neuroradiology, Medical Center - University of Freiburg, Freiburg, Germany"
      ],
      "name": "Theo Demerath"
    }
  ],
  "title": "Volumetric response after closure of a spinal CSF leak in patients with spontaneous intracranial hypotension: a multicompartmental longitudinal study",
  "uid": "3ceeb48a-00bc-5448-be85-4d29a749a6e8"
}