Application of ultrasonic detection of bone mineral density in the diagnosis of osteoporosis

SU Qichang; LIANG Jiangsheng

doi:10.3969/j.issn.1674-666X.2024.02.007

Abstract：Objective To analyze the bone mass of middle-aged and elderly residents in Beijiao Town of Foshan City,and to evaluate the value of ultrasonic detection of bone mineral density(BMD)in the diagnosis of osteoporosis.Methods A total of 200 middle-aged and elderly residents in Beijiao Town who underwent physical examination in the Thrid People's Hospital of Shunde District from August 2022 to October 2023 were selected.BMD of lumbar vertebra of the subjects was determined by dual-emission X-ray absorptiometry(DXA),at the same time,BMD of the right distal radius of the subjects was measured by quantitative ultrasound system(QUS),and the correlation between the two measurements was analyzed by Pearson analysis.Using DXA-T value as the diagnostic criterion for osteoporosis,the receiver operating characteristic(ROC)curve was drawn to evaluate the diagnostic value of radial QUS-T value for osteoporosis.Results Among the 200 subjects,33.0%had osteopo-rosis and 47.0%had osteopenia,and the bone mass decreased gradually with the increase of age(trend χ 2=124.779,P<0.001).Pearson analysis showed that the radial QUS-T value was positively correlated with the DXA-T value(r=0.183,P<0.05).The ROC curve showed that the area under the curve of radius QUS-T value in diagnosing osteoporosis was 0.542,the optimal cut-off value was ﹣2.7,the sensitivity was 72.7%and the specificity was 38.8%.For male subjects,the area under the curve of radial QUS-T value in the diagnosis of osteoporosis was 0.708,the optimal cut-off value was ﹣2.7,the sensitivity was 62.8%and the specificity was 66.7%.For female subjects,the area under the curve of radial QUS-T value in the diagnosis of osteoporosis was 0.630,the optimal cut-off value was ﹣1.03,the sensitivity was 87.0%and the specificity was 47.9%.Conclusions The incidence of osteoporosis among middle-aged and elderly residents in Beijiao Town of Foshan City is higher than the national average.Although the results of BMD detection of QUS can't be used as a diagnostic criterion for osteoporosis,it has high reference value in community screening and is worth promoting and applying.