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Cerebral fat embolism: Diffusion-weighted magnetic resonance imaging findings

Authors
Ryu, CWLee, DHKim, TKKim, SJKim, HSLee, JHChoi, CGSuh, DC
Issue Date
Aug-2005
Publisher
SAGE PUBLICATIONS LTD
Keywords
CNS; embolism; thrombosis; MR-diffusion; perfusion; trauma
Citation
ACTA RADIOLOGICA, v.46, no.5, pp 528 - 533
Pages
6
Indexed
SCIE
SCOPUS
Journal Title
ACTA RADIOLOGICA
Volume
46
Number
5
Start Page
528
End Page
533
URI
https://scholarworks.korea.ac.kr/kumedicine/handle/2020.sw.kumedicine/36290
DOI
10.1080/02841850510021481
ISSN
0284-1851
1600-0455
Abstract
Purpose: To demonstrate the diffusion-weighted (DWI) magnetic resonance imaging (MRI) findings, and the follow-up MRI findings, of cerebral fat embolism in the acute stage. Material and Methods: The initial DWI and clinical findings of six patients with cerebral fat embolism were retrospectively evaluated. The finding of DWI with a b-value of 1000 s/mm(2) (b = 1000) was compared with that of DWI with a b-value of 0 s/mm(2) (b=0). In three patients who underwent follow-up MRI, the interval change of the lesion on T2-weighted images was investigated. Results: The characteristic DWI finding of cerebral fat embolism in the acute stage was multiple, hyperintense, dot-like lesions disseminated in the brain. These lesions were distributed dominantly in the bilateral border-zone areas. Some lesions had an ancillary location including the cortex, deep white matter, basal ganglia, and cerebellum. The lesions were more intense and numerous in DWI (b=1000) than in DWI (b=0). The findings on the follow-up T2-weighted images were multiple confluent hyperintense lesions in the white matter with progression since the initial MRI. Conclusion: DWI could be a sensitive tool for detecting cerebral fat embolism in the acute phase. It is recommended that DWI be included in the initial evaluation of cerebral fat embolism with MRI.
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