Magnitude of Hematoma Volume Measurement Error in Intracerebral Hemorrhage
| Autor: | Brendan Diederichs, Michael D. Hill, Carlos A. Molina, Evgenia Klourfeld, Patricia Jo, Richard I. Aviv, David Rodriguez-Luna, Matthew Boyko, Jayme C. Kosior, Andrew M. Demchuk, Suresh Subramaniam, Dar Dowlatshahi |
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| Rok vydání: | 2016 |
| Předmět: |
Subarachnoid hemorrhage
Intraclass correlation Computed tomography 030204 cardiovascular system & hematology 03 medical and health sciences 0302 clinical medicine Hematoma Bolus (medicine) Volume measurement Humans Medicine Diagnostic Errors Cerebral Hemorrhage Advanced and Specialized Nursing Intracerebral hemorrhage medicine.diagnostic_test business.industry Reproducibility of Results Prognosis medicine.disease Intraventricular hemorrhage Anesthesia Neurology (clinical) Tomography X-Ray Computed Cardiology and Cardiovascular Medicine business Nuclear medicine 030217 neurology & neurosurgery |
| Zdroj: | Stroke. 47:1124-1126 |
| ISSN: | 1524-4628 0039-2499 |
| DOI: | 10.1161/strokeaha.115.012170 |
| Popis: | Background and Purpose— Limiting intracerebral hemorrhage (ICH) and intraventricular hemorrhage (IVH) expansion is a common target for acute ICH studies and, therefore, accurate measurement of hematoma volumes is required. We investigated the amount of hematoma volume difference between computed tomography scans that can be considered as measurement error. Methods— Five raters performed baseline ( Results— Total hematoma volumetric analyses had excellent intra- and interrater agreements (intraclass correlation coefficients 0.994 and 0.992, respectively). MDD for intra- and interrater volumes was 6.68 and 7.72 mL, respectively, and were higher the larger total hematoma volume was and in patients with subarachnoid hemorrhage or IVH. MDD for total hematoma volume measurement of 10.4 mL was found in patients with largest hematoma volumes. In patients with subarachnoid hemorrhage or IVH, MDD for total hematoma volume was 10.3 and 10.4 mL, respectively. In patients without IVH, MDD for intra- and interrater pure ICH volumes were 3.82 and 5.83 mL, respectively. Conclusions— A threshold higher than 10.4 mL seems to be reliable to avoid error of total hematoma volume measurement in a broad range of patients. An absolute ICH volume increase of >6 mL, commonly used as outcome in ICH studies, seems well above MDD and, therefore, could be used to reliably detect ICH expansion. |
| Databáze: | OpenAIRE |
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