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Hyperacute intraventricular hemorrhage: detection and characterization, a comparison between 5 MRI sequences.
D Hernalsteen1, A Dignac, C Oppenheim
1Department of Neuroradiology, cliniques universitaires Saint-Luc, 1200 Brussels, Belgium.
Journal of Neuroradiology = Journal De Neuroradiologie
|February 24, 2007
Summary
Magnetic resonance imaging (MRI) accurately detects early intraventricular hemorrhage (IVH) within 6 hours. Specific MRI sequences like FSE-FLAIR, EPI-GRE-T2*, and DWI show high sensitivity for diagnosing IVH.
Area of Science:
- Neuroradiology
- Neuroimaging
- Medical Diagnostics
Background:
- Early detection of intraventricular hemorrhage (IVH) is crucial for patient management.
- Computed tomography (CT) is the standard for diagnosing hyperacute IVH.
- Magnetic resonance imaging (MRI) offers potential for improved early IVH detection.
Purpose of the Study:
- To evaluate the diagnostic accuracy of MRI in detecting early intraventricular hemorrhage (IVH) within 6 hours of symptom onset.
- To identify specific MRI features indicative of acute IVH.
- To compare MRI performance against CT for IVH diagnosis.
Main Methods:
- Retrospective analysis of MRI data from 22 patients with hyperacute intraparenchymal hemorrhage.
- Independent, blinded assessment of MRI scans by two observers for IVH presence, with CT as the reference standard.
- Evaluation of sensitivity, specificity, and inter/intra-observer agreement for various MRI sequences.
Main Results:
- FSE-FLAIR, EPI-GRE-T2*, and DWI sequences demonstrated 100% sensitivity for IVH detection.
- b0 EPI images had 88% sensitivity, while T1 images showed 90% sensitivity.
- Three distinct IVH patterns were identified: clotted hematoma, layered hemorrhage, and red blood cell deposit.
- Hemorrhage volume on CT correlated best with DWI, but was underestimated on EPI-GRE T2*.
Conclusions:
- MRI, particularly FSE-FLAIR, EPI-GRE-T2*, and DWI sequences, is highly accurate for diagnosing early intraventricular hemorrhage (IVH).
- Specific MRI sequences can reliably detect and characterize acute IVH, offering a valuable diagnostic tool.
- MRI provides detailed insights into IVH morphology and volume estimation compared to CT.
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