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Does the Precision of Dual-Energy X-ray Absorptiometry for Bone Mineral Density Differ by Sex?
- Source :
- Journal of Clinical Densitometry. 17:505-509
- Publication Year :
- 2014
- Publisher :
- Elsevier BV, 2014.
-
Abstract
- Given larger bone size in men, bone mineral density (BMD) precision might differ between sexes. This study compared dual-energy X-ray absorptiometry BMD precision of 3 International Society for Clinical Densitometry-certified technologists in older men and women. Each technologist scanned a cohort of 30 men and 30 women (total n = 180) by using a Lunar iDXA densitometer (GE Healthcare, Madison, WI). Each volunteer had 2 lumbar spine and bilateral hip scans with repositioning between examinations. BMD least significant change was calculated. Age and body mass index did not differ between men and women. Mean height and weight were greater in men, 174.6 cm ± 6.9 and 81.6 kg ± 11.1 respectively, (p0.0001) than in women, 161.5 cm ± 5.9/69.1 kg ± 14.2, respectively. Bone area was greater in men (p0.0001) at all sites. BMD least significant change was statistically better (p0.05) in women at the mean total femur (0.014 vs 0.018 g/cm(2)) and left femoral neck (0.025 vs 0.038 g/cm(2)), but not different at either total femur, the right femoral neck, or lumbar spine (all p0.05). In conclusion, statistically significant male/female differences in BMD precision were observed at the mean total femur and left femoral neck. Given the small magnitude of difference in g/cm(2) and inconsistent pattern, that is, no right femoral neck difference, there is virtually no clinical difference in BMD precision between sexes. These data do not support a need for sex-specific precision analyses.
- Subjects :
- Male
musculoskeletal diseases
medicine.medical_specialty
Bone density
Endocrinology, Diabetes and Metabolism
Body Mass Index
Absorptiometry, Photon
Sex Factors
Bone Density
medicine
Humans
Radiology, Nuclear Medicine and imaging
Orthopedics and Sports Medicine
Femur
Densitometer
Volunteer
Dual-energy X-ray absorptiometry
Aged
Bone mineral
medicine.diagnostic_test
business.industry
Cohort
Female
Radiology
business
Nuclear medicine
Body mass index
Subjects
Details
- ISSN :
- 10946950
- Volume :
- 17
- Database :
- OpenAIRE
- Journal :
- Journal of Clinical Densitometry
- Accession number :
- edsair.doi.dedup.....1c27ca290af888bafe1b0213fbdbd865