3D mapping of cerebrospinal fluid local volume changes in patients with hydrocephalus treated by surgery: Preliminary study

Jérôme Hodel*, Pierre Besson, Alain Rahmouni, Eric Petit, Alain Lebret, Bénédicte Grandjacques, Olivier Outteryck, Mohamed Amine Benadjaoud, Anne Maraval, Alain Luciani, Jean Pierre Pruvo, Philippe Decq, Xavier Leclerc

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Objective: To develop automated deformation modelling for the assessment of cerebrospinal fluid (CSF) local volume changes in patients with hydrocephalus treated by surgery. Methods: Ventricular and subarachnoid CSF volume changes were mapped by calculating the Jacobian determinant of the deformation fields obtained after non-linear registration of pre- and postoperative images. A total of 31 consecutive patients, 15 with communicating hydrocephalus (CH) and 16 with non-communicating hydrocephalus (NCH), were investigated before and after surgery using a 3D SPACE (sampling perfection with application optimised contrast using different flip-angle evolution) sequence. Two readers assessed CSF volume changes using 3D colour-encoded maps. The Evans index and postoperative volume changes of the lateral ventricles and sylvian fissures were quantified and statistically compared. Results: Before surgery, sylvian fissure and brain ventricle volume differed significantly between CH and NCH (P=0.001 and P=0.025, respectively). After surgery, 3D colour-encoded maps allowed for the visual recognition of the CSF volume changes in all patients. The amounts of ventricle volume loss of CH and NCH patients were not significantly different (P=0.30), whereas readjustment of the sylvian fissure volume was conflicting in CH and NCH patients (P<0.001). The Evans index correlated with ventricle volume in NCH patients. Conclusion: 3D mapping of CSF volume changes is feasible providing a quantitative follow-up of patients with hydrocephalus. Key Points: • MRI can provide helpful information about cerebrospinal fluid volumes. • 3D CSF mapping allows quantitative follow-up in communicating and non-communicating hydrocephalus. • Following intervention, fissures and cisterns readjust in both forms of hydrocephalus. • These findings support the hypothesis of suprasylvian block in communicating hydrocephalus. • 3D mapping may improve shunt dysfunction detection and guide valve pressure settings.

Original languageEnglish (US)
Pages (from-to)136-142
Number of pages7
JournalEuropean Radiology
Volume24
Issue number1
DOIs
StatePublished - Jan 2014
Externally publishedYes

Keywords

  • Cerebrospinal fluid
  • Deformation modelling
  • Hydrocephalus
  • Magnetic resonance imaging
  • SPACE MR sequence

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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