Medical Radiology and Radiation Safety. 2015. Vol. 60. No. 2. P. 56-59

DIAGNOSTIC RADIOLODGY

I.S. Zakharov

Feature of Bone Densitometry in Postmenopausal Women

Kemerovo State Medical Academy, Kemerovo, Russia, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

ABSTRACT

Purpose: The comprehensive assessment of indicators of bone mineral density in postmenopausal women by dual-energy X-ray absorptiometry and quantitative computed tomography.

Material and methods: The study group comprised 210 women who are 50 years of age or older. Examinees were divided into four age groups: 50-59 (n = 73) 60-69 (n = 58), aged 70-79 years (n = 53), 80 years old and older (n = 26). The densitometry of the lumbar spine by dual-energy X-ray absorptiometry (DXA) and quantitative computed tomography (QCT) were conducted) for all women with an interval of 1-2 weeks.

Results: In the group I (50-59) there were no significant differences in the incidence of osteoporosis during DXA and QCT (15.1 % and 20.5 % respectively, p = 0.1). Beginning with the group II (60-69 years)  QCT osteoporosis incidence was found much higher than in the dual-energy x-ray absorptiometry (24.1 % - DXA and 44.8 % - QCT, p = 0.001). In the study of the relationship between the results of densitometry conducted by DXA and QCT, in all age groups a positive moderate correlation, but with increasing age of the coupling strength decreased revealed (I group: r = 0.68, p = 0.001; II group: r = 0.57, p = 0.001; III group: r = 0.40, p = 0.003; IV group: r = 0.40, p = 0.04).

Conclusions: With age increasing the discrepancy of densitometry results depending on the method used was observed. Taken into account that the DXA, the presence of degenerative processes of the spine, shows higher values of the BMD, women after 60 years of age are recommended densitometry by quantitative computed tomography to improve the quality of diagnosis of osteoporosis.

Key words: bone mineral density, dual energy X-ray absorptiometry, quantitative computed tomography, postmenopausal osteoporosis

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For citation: Zakharov IS. Feature of Bone Densitometry in Postmenopausal Women. Medical Radiology and Radiation Safety. 2015;60(2):56-9. Russian.

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