Journal of Korean Neurosurgical Society

The Korean Neurosurgical Society (대한신경외과학회)
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Clinical Usefulness of MR FLAIR Image in Mild Head Injuries

경증 두부외상 환자에서 MR FLAIR 영상의 임상적 유용성

  • Kim, Sei-Yoon (Department of Neurosurgery, Wonju College of Medicine, Yonsei University) ;
  • Whang, Kum (Department of Neurosurgery, Wonju College of Medicine, Yonsei University) ;
  • Kim, Hun-Joo (Department of Neurosurgery, Wonju College of Medicine, Yonsei University) ;
  • Lee, Myoung-Sup (Department of Diagnostic Radiology, Wonju College of Medicine, Yonsei University)
  • 김세윤 (연세대학교 원주의과대학 신경외과학교실) ;
  • 황금 (연세대학교 원주의과대학 신경외과학교실) ;
  • 김헌주 (연세대학교 원주의과대학 신경외과학교실) ;
  • 이명섭 (연세대학교 원주의과대학 진단방사선과학교실)
  • Received : 2001.05.10
  • Accepted : 2001.08.20
  • Published : 2001.10.28
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Abstract

Objectives : MR fluid-attenuated inversion recovery(FLAIR) image uses paired long inversion time and relaxation time that nulls the signal from CSF. With nulling of the CSF long echo time readout could be used to increase T2-weighting, hence improving the conspicuousness of most tissue lesions without the deleterious effects of CSF artifact seen on T2 weighted sequence. We examed the usefulness of FALIR image in the diagnosis of mild head injury. Methods : A total of 38 patients with mild head injury were examined by FLAIR image. We compared those images with CT scan and T1, T2-weighted images. Careful observation of MR images were done by two well-trained neuroradiologists. Each image was compared for conspicuousness and detectability of traumatic lesions might have shown abnormal signal intensities. The Wilcoxon signed ranks test was used for statistical evaluation. Results : The FLAIR image was significantly more sensitive than those of other images(p<0.001). T2 FFE(Fast Field Echo) image was more useful for detection of small petechial hemorrhages. Conclusion : FLAIR image is considered to be more sensitive than those of conventional MR images in the evaluation of mild head injuries.

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