Conspicuity of diffuse axonal injury lesions on diffusion-weighted MR imaging

Toshibumi Kinoshita, Toshio Moritani, Akio Hiwatashi, Henry Z. Wang, David A. Shrier, Yuji Numaguchi, Per Lennart A. Westesson

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

Objective: (1) To detect diffuse axonal injury (DAI) lesions by diffusion-weighted imaging (DWI), as compared with fluid-attenuated inversion recovery (FLAIR) imaging and (2) to evaluate hemorrhagic DAI lesions by b 0 images obtained from DWI, as compared with gradient-echo (GRE) imaging. Methods: We reviewed MR images of 36 patients with a diagnosis of DAI. MR imaging was performed 20 h to 14 days (mean, 3.7 days) after traumatic brain injury. We evaluated: (1) conspicuity of lesions on DWI and FLAIR and (2) conspicuity of hemorrhage in DAI lesions on b0 images and GRE imaging. Results: DWI clearly depicted high-signal DAI lesions. The sensitivity of DWI to lesional conspicuity in DAI lesions was almost equal to that of FLAIR. The sensitivity of b0 images to identification of hemorrhagic DAI lesions was inferior to that of GRE. Conclusion: DWI is as useful as FLAIR in detecting DAI lesions. GRE imaging is still the superior tool for the evaluation of hemorrhagic DAI.

Original languageEnglish
Pages (from-to)5-11
Number of pages7
JournalEuropean Journal of Radiology
Volume56
Issue number1
DOIs
Publication statusPublished - Oct 2005
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging

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