The bone in these vertebral bodies demonstrates marked osteoporosis with thinning and loss of bony trabeculae.

椎骨明显的骨质疏松症，可见骨小梁薄弱甚至丧失。

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Study Design. This study investigates the effects of photodynamic therapy (PDT) on the structural integrity of vertebral bone in healthy rats.

研究设计：研究光动力疗法(PDT)对健康大鼠脊椎骨结构完整性的作用。

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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.

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。

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