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Role of diffusion-weighted magnetic resonance imaging in diffuse axonal injury
| Content Provider | Scilit |
|---|---|
| Author | Ezaki, Y. Tsutsumi, K. Morikawa, M. Nagata, I. |
| Copyright Year | 2006 |
| Description | Journal: Acta Radiologica Purpose: To determine whether the signal changes on magnetic resonance imaging (MRI), including fluid attenuated inversion recovery (FLAIR), T2*-weighted gradient echo (GE) imaging, and diffusion-weighted imaging (DWI) in diffuse axonal injury (DAI) patients correlate with the clinical outcome. Material and Methods: We diagnosed patients with DAI based on the following criteria: 1) a loss of consciousness from the time of injury that persisted beyond 6 h; 2) no apparent hemorrhagic contusion on computed tomography (CT); 3) the presence of white matter injury on MRI. Twenty-one DAI patients were analyzed (19 M, 2 F, mean age 34 years) with MRI (FLAIR, T2*-weighted GE imaging, and DWI). Results: 325 abnormalities were detected by MRI within a week after injury. The T2*-weighted GE imaging was significantly more sensitive than FLAIR and DWI in diagnosing DAI. DWI detected only 32% of all lesions, but could depict additional shearing injuries not visible on either T2*-weighted GE imaging or FLAIR. The mean number of lesions in brainstem detected by DWI in the favorable group (good recovery/moderately disabled) was significantly smaller than in the unfavorable group (severely disabled/vegetative survival/death). This trend was not observed on the T2*-weighted GE imaging and FLAIR findings. Conclusion: DWI cannot detect all DAI-related lesions, but is a potentially useful imaging modality for both diagnosing and assessing patients with DAI. |
| Related Links | http://acr.sagepub.com/content/47/7/733.full.pdf |
| Ending Page | 740 |
| Page Count | 8 |
| Starting Page | 733 |
| ISSN | 02841851 |
| e-ISSN | 16000455 |
| DOI | 10.1080/02841850600771486 |
| Journal | Acta Radiologica |
| Issue Number | 7 |
| Volume Number | 47 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 2006-09-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Acta Radiologica Rehabilitation Magnetic Resonance Imaging Diffusion Weighted Weighted Magnetic Diffuse Axonal Axonal Injury |
| Content Type | Text |
| Subject | Radiology, Nuclear Medicine and Imaging Radiological and Ultrasound Technology |
