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Neuroradiology

, Volume 50, Issue 2, pp 117–122 | Cite as

Narrow CSF space at high convexity and high midline areas in idiopathic normal pressure hydrocephalus detected by axial and coronal MRI

  • Makoto SasakiEmail author
  • Satoshi Honda
  • Tatsuhiko Yuasa
  • Akihide Iwamura
  • Eri Shibata
  • Hideki Ohba
Diagnostic Neuroradiology

Abstract

Introduction

The aim of this study was to determine the performance of axial and coronal magnetic resonance imaging (MRI) in detecting the narrowing of the cerebrospinal fluid (CSF) space at the high convexity and high midline areas, which is speculated to be one of the clinical characteristics of idiopathic normal pressure hydrocephalus (iNPH).

Methods

We retrospectively examined axial and coronal T1-weighted images of 14 iNPH patients and 12 age-matched controls. The narrowness of the CSF space at the high convexity/midline was blindly evaluated by five raters using a continuous confidence rating scale for receiver operating characteristic (ROC) analysis.

Results

Axial and coronal imaging accurately determined the presence of the narrow cisterns/sulci at the high convexity/midline and was capable of predicting probable/definite iNPH with a high degree of accuracy. there were also no significant differences in the detection of this finding between the axial and coronal images.

Conclusion

Both axial and coronal T1-weighted MRI can detect the narrow CSF space at the high convexity/midline accurately and may therefore facilitate clinicians in choosing a management strategy for iNPH patients.

Keywords

Idiopathic normal pressure hydrocephalus Magnetic resonance imaging Subarachnoid space Receiver operating characteristic analysis 

Notes

Acknowledgements

This work was partly supported by a Research Grant from the Ministry of Health, Labour and Welfare of Japan (2005-Nanchi-17) and by a Grant-in-Aid for Advanced Medical Science Research from the Ministry of Education, Culture, Sports, Science and Technology of Japan.

Conflict of interest statement

We declare that we have no conflict of interest.

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Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • Makoto Sasaki
    • 1
    Email author
  • Satoshi Honda
    • 2
  • Tatsuhiko Yuasa
    • 3
  • Akihide Iwamura
    • 3
  • Eri Shibata
    • 4
  • Hideki Ohba
    • 5
  1. 1.Department of RadiologyIwate Medical UniversityMoriokaJapan
  2. 2.Department of RadiologySt. Luke’s International HospitalTokyoJapan
  3. 3.Department of NeurologyKohnodai Hospital, National Center of Neurology and PsychiatryIchikawaJapan
  4. 4.Department of NeuropsychiatryIwate Medical UniversityMoriokaJapan
  5. 5.Department of NeurologyIwate Medical UniversityMoriokaJapan

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