目的分析磁共振扩散张量成像 (DTI diffusion tensor imaging)在轻 型颅脑损伤评估中的价值。方法 选取我 院收治的轻型颅脑损伤患者102例，作为 轻型组，纳入同期入院的102例中重度颅 脑损伤者作为中重度组，并取同期于我 院体检的102例体检者作为对照组，均予 以磁共振DTI检测，比较两组表观扩散系 数(ADC)、脑白质部分各向异性(FA)。结 果 ①轻型组额叶白质、内囊、颞叶白 质、压部胼胝体处FA值高于中重型组， 低于对照组，组间比较有统计学意义(P ＜0.05)；②轻型组各观察区处ADC值低于 对照组且高于中重型组，对比有显著差异 (P＜0.05)。结论 磁共振DTI检查能明确 轻型颅脑损伤患者的脑组织损伤情况，值 得临床推广。

Objective To investigate the application value of diffusion tensor imaging on evaluating patients with mild head injury. Methods A total of 102 cases with mild head injury in our hospital were selected as mild group, 102 cases with moderate-severe head injury were selected as moderate-severe group, 102 physical examinees at the same period were selected as control group, they were all given magnetic resonance DTI detection, ADC, FA of the two groups were compared. Results ① FA value in frontal white matter, endocyst, temporal lobe white matter, splenial callosum of the mild group were higher than those in the moderate-severe group and control group, the difference between groups was statistic significant (P＜0.05). ② ADC value at each observed area of the mild group was lower than that in the control group and higher than that in the moderatesevere group, the difference was statistic significant (P＜0.05). Conclusion Magnetic resonance DTI detection can clear and definite injury of brain tissue, and it is worthy of clinic application.