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作者应用定量CT测量96例健康白种女孩腰椎皮质骨和髓质骨密度,以明确生长期中轴骨各部骨量变化特征,进而确定各种人体测量指数,青春状态与相应髓质骨和皮质骨密度间的关系。所有研究对象的性成熟状态依Tanner五期法进行了分类;根据同一天左手和腕关节的X线平片测定骨龄,并测量L_1～L_3椎体中部的皮质骨和髓质骨密度及同一层面椎体的面积、高度和大小;同时行L_3水平椎旁肌肉及腹腔脂肪量的CT测量。
The author used quantitative CT to measure the BMD of lumbar cortex and medulla of 96 healthy white girls in order to confirm the characteristics of bone mass changes in each part of axilla at the growing stage and then to determine various body measurement indexes, The relationship between bone mineral density. The sex maturation status of all the subjects was classified according to the Tanner five-stage method. The bone age was measured by X-ray plain film of the left hand and the wrist on the same day, and the cortical and medullary bone densities in the middle of the L_1-L_3 vertebral body and the same level Vertebral body area, height and size; at the same time L_3 horizontal paraspinal muscle and abdominal fat mass CT measurements.