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Published on: September 25, 2016
Computed tomographic findings in non-traumatic hemorrhagic stroke
Pipat Chiewvit1, Nasuda Danchaivijitr, Yongchai Nilanont
1Department of Radiology, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand. siscv@mahidol.ac.th
Insights
Computed tomography (CT) imaging aids in the early identification of hemorrhagic stroke patients. Key predictors of early mortality include large hematoma volume and intraventricular hemorrhage extension.
Area of Science:
- Neurology
- Radiology
- Medical Imaging
Background:
- Hemorrhagic stroke is a significant cause of mortality and morbidity.
- Early and accurate diagnosis is crucial for patient management and outcome prediction.
Purpose of the Study:
- To analyze computed tomography (CT) findings in hemorrhagic stroke patients.
- To correlate CT findings with clinical outcomes.
- To assess interobserver agreement in identifying hemorrhagic stroke on CT.
Main Methods:
- Retrospective analysis of 131 hemorrhagic stroke cases from Jan 2004 to Dec 2005.
- Collected and verified CT imaging features and clinical data.
- Calculated percentages, predictive values, and kappa statistics for interobserver agreement.
Main Results:
- Intracerebral hemorrhage was the most common type, frequently occurring in the thalamus and basal ganglia.
- Hematoma volume > 60 cm³ and intraventricular hemorrhage extension were significant predictors of early mortality (p < 0.05).
- Interobserver agreement for CT interpretation of hemorrhagic stroke type and location was very good (Kappa = 0.861 and 0.866, respectively).
Conclusions:
- CT imaging is effective for early identification of hemorrhagic stroke.
- CT provides crucial imaging evidence for predicting high mortality risk in these patients.
Objective:
To analyze CT findings in hemorrhagic stroke patients correlation with clinical outcome and assess the interobserver agreement of hemorrhagic stroke identification on CT imaging.
Material And Method:
CT imaging features of 131 cases and clinical data were verified and collected at Siriraj Hospital from Jan 2004 to Dec 2005 and retrospectively analyzed for type, location, mass effect, size of hemorrhage, intraventricular extension, initial level of consciousness (GCS), hospital length of stay and patient outcome. The percentages, predictive values, kappa were calculated.
Results:
From all types of hemorrhagic stroke, intracerebral hemorrhage remains a common and devastating clinical problem. The most common site was the thalamus and basal ganglia. In the present study, the authors found that fifty-three cases (53/131 cases, 40.5%) with thalamic-ganglionic hemorrhage, nineteen cases (19/131 cases, 14.5%) in lobar hemorrhage, five cases (5/131 cases, 3.8%) in cerebellum, five cases (5/131 7 cases, 3.8%) in brainstem and eight cases (8/131 cases, 6.1%) occurred in multiple locations. There were twenty-five cases (25/131 cases, 19.1%) of subarachnoid hemorrhage, thirteen cases (13/131 cases, 9.9%) of subdural hemorrhage and three cases (3/131 cases, 2.3%) of intraventricular hemorrhage. Two variables on CT imaging, identified as significant as early mortality predictors, were hematoma volume more than 60 cm3, and presence of intraventricular hemorrhage extension (p < 0.05). The mass effect defined as midline and/or enlargement of contralateral ventricle was not significant (p = 0.067). The present study found concordance between CT brain interpretation by two neuroradiologists for the type of hemorrhagic stroke was very good, Kappa = 0.861 as well as for location was 0.866.
Conclusion:
CT imaging is an imaging instrument for early identification of hemorrhagic stroke patients and providing imaging evidence of high mortality risk.
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