Diagnosis of osteoporosis using vertebra bone mineral density measurement by quantitative computed tomography

Objective To evaluate the clinical value and to explore diagnostic standard of osteoporosis with vertebra bone mineral density(BMD)by measurement using quantitative computed tomography(QCT).Methods The BMD in vertebra of lumbar spine(L1-L4)were measured by QCT in 53 healthy middle-old-aged persons and 68 osteoporosis patients.Results The BMD of healthy middle-old-ages persons declined obviously with aging(P0.01).If the diagnostic standard of osteoporosis was BMD≤x-2.0SD,there were 68 patients.Which,the BMD values of different aged group were lower than the bone quantity block values.If the diagnostic criterion was BMD≤x-2.5SD,there were 60 cases.Conclusion As a method for diagnosing osteoporosis,QCT is highly sensitive,precise,reproducible and is easily applied.According to the diagnostic criterion with BMD≤x-2.0SD,it is more appropriate for clinical case and it can decrease rate of missed diagnosis.