A quantitative analysis of head injury using T2*-weighted gradient-echo imaging

J Trauma. 2000 Aug;49(2):272-7. doi: 10.1097/00005373-200008000-00013.


Background: T2*-weighted gradient-echo imaging (T2*-GE) is useful for detecting small hemorrhages.

Methods: Thirty-four patients were prospectively examined, first by magnetic resonance imaging (1.5 T) and then by T2-weighted fast spin echo (T2-FSE) and T2*-GE. Thereafter, the correlations between the T2-FSE or T2*-GE findings and the clinical or computed tomography findings were analyzed.

Results: The number of lesions detected by T2*-GE was 14.5 +/- 16.3 (mean +/- SD, n = 34), which was significantly (p < 0.001) greater than that detected by T2-FSE (5.6 +/- 5.6, n = 34). The findings of T2*-GE correlated positively with both the duration of unconsciousness (R2 = 0.74,p < 0.0001) and with Glasgow Outcome Scale (R2 = 0.81, p < 0.0001), whereas those of T2-FSE did not show any significant correlation. T2*-GE imaging could also detect all areas responsible for focal neurologic signs 1 month after in. jury, whereas T2-FSE imaging detected only 22 of 33 such signs.

Conclusion: T2*-GE was found to be useful for evaluating the clinical symptoms of head injury.

MeSH terms

  • Adolescent
  • Adult
  • Child
  • Child, Preschool
  • Diagnosis, Differential
  • Echo-Planar Imaging / standards*
  • Evaluation Studies as Topic
  • Female
  • Glasgow Coma Scale
  • Head Injuries, Closed / pathology*
  • Humans
  • Infant
  • Intracranial Hemorrhages / pathology*
  • Male
  • Middle Aged
  • Predictive Value of Tests
  • Prospective Studies
  • Tomography, X-Ray Computed