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Neurocritical Care

, Volume 29, Issue 2, pp 241–252 | Cite as

Magnetic Resonance Imaging in Aneurysmal Subarachnoid Hemorrhage: Current Evidence and Future Directions

  • Sarah E. Nelson
  • Haris I. Sair
  • Robert D. Stevens
Original Article

Abstract

Background

Aneurysmal subarachnoid hemorrhage (aSAH) is associated with an unacceptably high mortality and chronic disability in survivors, underscoring a need to validate new approaches for treatment and prognosis. The use of advanced imaging, magnetic resonance imaging (MRI) in particular, could help address this gap given its versatile capacity to quantitatively evaluate and map changes in brain anatomy, physiology and functional activation. Yet there is uncertainty about the real value of brain MRI in the clinical setting of aSAH.

Methods

In this review, we discuss current and emerging MRI research in aSAH. PubMed was searched from inception to June 2017, and additional studies were then chosen on the basis of relevance to the topics covered in this review.

Results

Available studies suggest that brain MRI is a feasible, safe, and valuable testing modality. MRI detects brain abnormalities associated with neurologic examination, outcomes, and aneurysm treatment and thus has the potential to increase knowledge of aSAH pathophysiology as well as to guide management and outcome prediction. Newer pulse sequences have the potential to reveal structural and physiological changes that could also improve management of aSAH.

Conclusion

Research is needed to confirm the value of MRI-based biomarkers in clinical practice and as endpoints in clinical trials, with the goal of improving outcome for patients with aSAH.

Keywords

Subarachnoid hemorrhage Magnetic resonance imaging Systematic review 

Notes

Compliance with Ethical Standards

Funding

This study received no funding.

Conflict of interest

The authors declare that they have no conflicts of interest.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature and Neurocritical Care Society 2018

Authors and Affiliations

  • Sarah E. Nelson
    • 1
    • 2
  • Haris I. Sair
    • 4
  • Robert D. Stevens
    • 1
    • 2
    • 3
    • 4
  1. 1.Department of NeurologyJohns Hopkins University School of MedicineBaltimoreUSA
  2. 2.Department of Anesthesiology and Critical Care MedicineJohns Hopkins University School of MedicineBaltimoreUSA
  3. 3.Department of NeurosurgeryJohns Hopkins University School of MedicineBaltimoreUSA
  4. 4.Departments of RadiologyJohns Hopkins University School of MedicineBaltimoreUSA

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