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Cytotoxic and vasogenic cerebral oedema in traumatic brain injury: Assessment with FLAIR and DWI imaging.

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Title: Cytotoxic and vasogenic cerebral oedema in traumatic brain injury: Assessment with FLAIR and DWI imaging.
Authors: Hudak, Anne M. (AUTHOR), Peng, Lifang (AUTHOR), Marquez de la Plata, Carlos (AUTHOR), Thottakara, John (AUTHOR), Moore, Carol (AUTHOR), Harper, Caryn (AUTHOR), McColl, Roderick (AUTHOR), Babcock, Evelyn (AUTHOR), Diaz-Arrastia, Ramon (AUTHOR)
Source: Brain Injury. Nov2014, Vol. 28 Issue 12, p1602-1609. 8p.
Subjects: Adrenocortical hormones, Hormone therapy, Complications of brain injuries, Hypoglycemic sulfonylureas, Academic medical centers, Algorithms, Brain injuries, Cerebral edema, Interviewing, Longitudinal method, Magnetic resonance imaging, Research methodology, Evaluation of medical care, Scientific observation, Health outcome assessment, Research funding, Statistical sampling, Scale analysis (Psychology), Statistical hypothesis testing, Statistics, Data analysis, Quantitative research, Inter-observer reliability, Severity of illness index, Research methodology evaluation, Data analysis software, Functional assessment, Mann Whitney U Test, Diagnosis, Therapeutics
Geographic Terms: Texas
Abstract: Primary objective: Cerebral oedema is a common complication of traumatic brain injury (TBI). The use of Fluid-Attenuated Inversion Recovery (FLAIR) imaging in combination with Diffusion Weighted Imaging (DWI) has the potential to distinguish between cytotoxic and vasogenic oedema. This study hypothesized a significant relationship between cytotoxic lesion volume and outcome. Research design: This observational study reports on a convenience sample where MRI was obtained for clinical purposes. Methods and procedures: Clinical post-TBI FLAIR and DWI images were analysed. For this study, lesions were defined as primarily cytotoxic oedema if the ratio of FLAIR to DWI lesion volume was comparable, defined as a ratio <2. If the ratio of FLAIR to DWI lesion volume was ≥2, oedema was considered predominantly of vasogenic origin. Main outcomes and results: The sample consisted primarily of males with TBIs whose injury severity ranged from complicated mild to severe. Analysis revealed that both oedema types are common after TBI and both are associated with functional deficits 6 months after injury. Conclusions: Acute MRI may be useful to assess pathology at the tissue after traumatic brain injury. Clinical trials targeting cytotoxic and vasogenic mechanisms of oedema formation may benefit from using DWI and FLAIR MRI as a means to differentiate the predominant oedema type after TBI. [ABSTRACT FROM AUTHOR]
Copyright of Brain Injury is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: Primary objective: Cerebral oedema is a common complication of traumatic brain injury (TBI). The use of Fluid-Attenuated Inversion Recovery (FLAIR) imaging in combination with Diffusion Weighted Imaging (DWI) has the potential to distinguish between cytotoxic and vasogenic oedema. This study hypothesized a significant relationship between cytotoxic lesion volume and outcome. Research design: This observational study reports on a convenience sample where MRI was obtained for clinical purposes. Methods and procedures: Clinical post-TBI FLAIR and DWI images were analysed. For this study, lesions were defined as primarily cytotoxic oedema if the ratio of FLAIR to DWI lesion volume was comparable, defined as a ratio &lt;2. If the ratio of FLAIR to DWI lesion volume was ≥2, oedema was considered predominantly of vasogenic origin. Main outcomes and results: The sample consisted primarily of males with TBIs whose injury severity ranged from complicated mild to severe. Analysis revealed that both oedema types are common after TBI and both are associated with functional deficits 6 months after injury. Conclusions: Acute MRI may be useful to assess pathology at the tissue after traumatic brain injury. Clinical trials targeting cytotoxic and vasogenic mechanisms of oedema formation may benefit from using DWI and FLAIR MRI as a means to differentiate the predominant oedema type after TBI. [ABSTRACT FROM AUTHOR]
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  Data: &lt;i&gt;Copyright of Brain Injury is the property of Taylor &amp; Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder&#39;s express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.&lt;/i&gt; (Copyright applies to all Abstracts.)
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        Value: 10.3109/02699052.2014.936039
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      – Code: eng
        Text: English
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      – SubjectFull: Adrenocortical hormones
        Type: general
      – SubjectFull: Hormone therapy
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      – SubjectFull: Complications of brain injuries
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      – SubjectFull: Hypoglycemic sulfonylureas
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      – SubjectFull: Algorithms
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      – SubjectFull: Brain injuries
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      – SubjectFull: Cerebral edema
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      – SubjectFull: Interviewing
        Type: general
      – SubjectFull: Longitudinal method
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      – SubjectFull: Magnetic resonance imaging
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      – SubjectFull: Research methodology
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      – SubjectFull: Evaluation of medical care
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      – SubjectFull: Texas
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      – TitleFull: Cytotoxic and vasogenic cerebral oedema in traumatic brain injury: Assessment with FLAIR and DWI imaging.
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              Text: Nov2014
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