Table 1.
The summary of demographic and clinical characteristics of patients.
Figure 1.
A 67-year- old male patient with a history of fall down 4 hours ago.
Initial GCS score was 13. The duration of posttraumatic amnesia was 1(A) Unenhanced FLAIR MR image shows small amount of subdural hemorrhage with iso-signal intensity in Rt. parietal convexity. (B) contrast-enhanced FLAIR MR image clearly demonstrates meningeal enhancement along not only right convexity but also Lt. side. (C) contrast-enhanced T1 weighted image shows no definite enhancement. (D) GRE image depicts hemosiderin deposition only in Lt. cerebral cortex.
Figure 2.
A 60-year- old female patient with a history of assault 10 hours ago.
Initial GCS score was 15. The duration of posttraumatic amnesia was 3(B) Contrast-enhanced FLAIR MR image helped to detect small amount of subdural hemorrhage in both frontal convexity which was initially missed, after reviewing meningeal enhancement. No demonstrable abnormality was found on unenhanced FLAIR (A), contrast-enhanced T1 weighted (C) and GRE (D) MR images.
Figure 3.
A 63-year- old female patient with a history of fall down 2 days ago.
Initial GCS score was 15. She had transient episode of loss of consciousness less than 30(B) Only contrast-enhanced FLAIR MR image reveals abnormal finding – meningeal enhancement along falx. No demonstrable abnormality was found on unenhanced FLAIR (A), contrast-enhanced T1 weighted (C) and GRE (D) MR images.
Figure 4.
Diagram of the study results.
Table 2.
Comparison of the number of patients with traumatic brain lesions demonstrated on routine images and on the combination of routine images and contrast-enhanced fluid-attenuated inversion recovery (FLAIR) image.
Table 3.
The location of meningeal enhancement on contrast-enhanced fluid-attenuated inversion recovery (FLAIR) image and the number of patients with traumatic brain lesions.
Table 4.
Association between meningeal enhancement on contrast-enhanced fluid-attenuated inversion recovery (FLAIR) images and clinical values.
Table 5.
Association between meningeal enhancement confined to the falx on contrast-enhanced fluid-attenuated inversion recovery (FLAIR) images and clinical values.