Cerebral fat embolism: diffusion-weighted magnetic resonance imaging findings
2005; SAGE Publishing; Volume: 46; Issue: 5 Linguagem: Inglês
10.1080/02841850510021481
ISSN1600-0455
AutoresChang‐Woo Ryu, D. H. Lee, T. K. Kim, S. J. Kim, H. S. Kim, J. H. Lee, Choong Gon Choi, Dae Chul Suh,
Tópico(s)Orthopedic Infections and Treatments
ResumoPurpose: 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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