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目的 :观察应用双能X线测定腰椎椎体骨密度时正位和侧位结果的差别 ,探讨腰椎侧位测定骨密度辅助诊断骨质疏松症的价值。方法 :以 16 6名平均年龄为 6 4 .7岁的老年女性骨质疏松症患者为对象 ,测试其腰椎骨密度值 ,观察不同年龄受试者腰椎正、侧位骨密度的差别 ,以及由此测试结果得到的诊断骨质疏松结论的差别。结果 :全部受试者的椎体正位骨密度检测均高于侧位(P <0 0 1) ,但在 113名年龄小于 6 5岁的受试者中 ,以此诊断骨质疏松症的结果并无显著性差异(P >0 0 5 ) ;5 3名年龄大于 6 5岁的受试者中 ,根据正、侧位骨密度的变化得到的骨质疏松症诊断出现较大偏差 (P <0 0 5 )。根据正位骨密度测定诊断骨质疏松症约有三分之一漏诊率。结论 :对绝经期骨质疏松患者可以用传统的正位腰椎骨密度测定的方法来诊断 ,不需另作侧位测定 ,对老年性骨质疏松症患者 ,则应加作腰椎侧位骨密度测定 ,以减少漏诊
OBJECTIVE: To observe the difference of positive and lateral results when using dual-energy X-ray to determine the density of lumbar vertebral body and to explore the value of measuring the density of lumbar spine to assist in the diagnosis of osteoporosis. Methods: Sixteen elderly female osteoporosis patients with a mean age of 6.47 years were studied. The BMD of lumbar spine was measured and the difference of BMD of lumbar spine between the two groups was observed. The difference between this test result in diagnosing osteoporosis conclusions. RESULTS: All subjects had an elevated vertebral body BMD measured at the lateral side (P <0.01), but in 113 subjects younger than 65 years of age, osteoporosis was diagnosed There was no significant difference between the two groups (P> 0.05). Of the 53 subjects older than 65 years old, the diagnosis of osteoporosis showed a large deviation (P <0 0 5). About one-third of misdiagnosis rates of osteoporosis are diagnosed on the basis of orthogenic bone mineral density. CONCLUSIONS: It is possible to diagnose menopausal osteoporosis with traditional orthopedic lumbar spine bone mineral density measurement without additional lateral measurement. For patients with senile osteoporosis, lateral lumbar bone mineral density Determination to reduce missed diagnosis