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A quantitative analysis of head injury using T2*-weighted gradient-echo imaging.
Y Yanagawa1, Y Tsushima, A Tokumaru
1Department of Traumatology and Critical Care Medicine, National Defense Medical College, Saitama, Japan.
The Journal of Trauma
|August 30, 2000
Summary
T2*-weighted gradient-echo imaging (T2*-GE) detects significantly more brain lesions than T2-weighted fast spin echo (T2-FSE). T2*-GE is valuable for assessing clinical symptoms after head injury.
Area of Science:
- Radiology
- Neuroimaging
- Medical Diagnostics
Background:
- T2*-weighted gradient-echo imaging (T2*-GE) is recognized for its utility in identifying small hemorrhages.
- Assessing the efficacy of different MRI sequences for head injury evaluation is crucial.
Purpose of the Study:
- To compare the lesion detection capabilities of T2*-weighted gradient-echo imaging (T2*-GE) and T2-weighted fast spin echo (T2-FSE).
- To evaluate the correlation of these imaging techniques with clinical outcomes in patients with head injuries.
Main Methods:
- Prospective examination of 34 patients using 1.5 T magnetic resonance imaging (MRI).
- Comparison of T2-weighted fast spin echo (T2-FSE) and T2*-weighted gradient-echo (T2*-GE) sequences.
- Analysis of correlations between imaging findings and clinical or computed tomography (CT) data.
Main Results:
- T2*-GE detected significantly more lesions (14.5 +/- 16.3) compared to T2-FSE (5.6 +/- 5.6).
- T2*-GE findings showed strong positive correlations with duration of unconsciousness (R2 = 0.74) and Glasgow Outcome Scale (R2 = 0.81).
- T2*-GE identified all areas responsible for focal neurologic signs, while T2-FSE identified only 22 of 33.
Conclusions:
- T2*-weighted gradient-echo imaging (T2*-GE) demonstrates superior lesion detection compared to T2-FSE in head injury patients.
- T2*-GE is a valuable tool for evaluating the clinical symptoms and outcomes associated with head injuries.