目的：研究短期(1周)和中期(6周)内单纯的PD T疗法对脊椎骨力学和结构特性的作用。
Objective. To determine the short-term (1 week) and intermediate term (6 weeks) effects of a single PDT treatment on the mechanical and structural properties of vertebral bone.
结果：56例无颈椎骨折或脱位的颈髓损伤患者中，48例伤后1周之内接受颈椎CT扫描检查，颈髓病变的检出率为79.17%。
Results:In the 56 patients, 48 cases were finally diagnosed by CT within one week after injury and the positive rate was 79.17%.
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