ArticleFluids and barriers of the CNS2023
Characterising spinal cerebrospinal fluid flow in the pig with phase-contrast magnetic resonance imaging.
Article in Fluids and barriers of the CNS, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 11 citations in OpenAlex.
- Multimodal imaging maps spinal glymphatic transport in health and its disruption after injury.bioRxiv : the preprint server for biology · 2026Article
- Effects of Intrathecal Magnesium Administration on Neurologic Outcomes in a Porcine Model of Asphyxial Cardiac Arrest.Journal of the American Heart Association · 2026Article
- Distribution of ganciclovir in the porcine central nervous system.Antimicrobial agents and chemotherapy · 2025Article
- Cerebrospinal fluid dynamics and subarachnoid space occlusion following traumatic spinal cord injury in the pig: an investigation using magnetic resonance imaging.Fluids and barriers of the CNS · 2025Article
- Cerebrospinal fluid pressure dynamics as a biomechanical marker for quantification of spinal cord compression: Conceptual framework and systematic review of clinical trials.Brain & spine · 2025Review
- Hemodynamic changes and their relationship with white matter hyperintensities in CSVD patients with cognitive impairment: a 4D flow study.Frontiers in aging neuroscience · 2025Article
- Article
- Active CNS delivery of oxycodone in healthy and endotoxemic pigs.Fluids and barriers of the CNS · 2024Article
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Authors and funding
7 authors at 5 institutions in 2 countries.
Funding
Abstract
backgroundDetecting changes in pulsatile cerebrospinal fluid (CSF) flow may assist clinical management decisions, but spinal CSF flow is relatively understudied. Traumatic spinal cord injuries (SCI) often cause spinal cord swelling and subarachnoid space (SAS) obstruction, potentially causing pulsatile CSF flow changes. Pigs are emerging as a favoured large animal SCI model; therefore, the aim of this study was to characterise CSF flow along the healthy pig spine.
methodsPhase-contrast magnetic resonance images (PC-MRI), retrospectively cardiac gated, were acquired for fourteen laterally recumbent, anaesthetised and ventilated, female domestic pigs (22-29 kg). Axial images were obtained at C2/C3, T8/T9, T11/T12 and L1/L2. Dorsal and ventral SAS regions of interest (ROI) were manually segmented. CSF flow and velocity were determined throughout a cardiac cycle. Linear mixed-effects models, with post-hoc comparisons, were used to identify differences in peak systolic/diastolic flow, and maximum velocity (cranial/caudal), across spinal levels and dorsal/ventral SAS. Velocity wave speed from C2/C3 to L1/L2 was calculated.
resultsPC-MRI data were obtained for 11/14 animals. Pulsatile CSF flow was observed at all spinal levels. Peak systolic flow was greater at C2/C3 (dorsal: - 0.32 ± 0.14 mL/s, ventral: - 0.15 ± 0.13 mL/s) than T8/T9 dorsally (- 0.04 ± 0.03 mL/s; p < 0.001), but not different ventrally (- 0.08 ± 0.08 mL/s; p = 0.275), and no difference between thoracolumbar levels (p > 0.05). Peak diastolic flow was greater at C2/C3 (0.29 ± 0.08 mL/s) compared to T8/T9 (0.03 ± 0.03 mL/s, p < 0.001) dorsally, but not different ventrally (p = 1.000). Cranial and caudal maximum velocity at C2/C3 were greater than thoracolumbar levels dorsally (p < 0.001), and T8/T9 and L1/L2 ventrally (p = 0.022). Diastolic velocity wave speed was 1.41 ± 0.39 m/s dorsally and 1.22 ± 0.21 m/s ventrally, and systolic velocity wave speed was 1.02 ± 0.25 m/s dorsally and 0.91 ± 0.22 m/s ventrally.
conclusionsIn anaesthetised and ventilated domestic pigs, spinal CSF has lower pulsatile flow and slower velocity wave propagation, compared to humans. This study provides baseline CSF flow at spinal levels relevant for future SCI research in this animal model.
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