期刊
AEROSPACE MEDICINE AND HUMAN PERFORMANCE
卷 86, 期 12, 页码 A38-A44出版社
AEROSPACE MEDICAL ASSOC
DOI: 10.3357/AMHP.EC06.2015
关键词
densitometry; bone mineral density; trabecular bone; cortical bone
资金
- NASA ISS Program Office [SSP 50260, SSP 50667]
The measurement of bone mineral density (BMD) by dual-energy X-ray absorptiometry (DXA) is the Medical Assessment Test used at the NASA Johnson Space Center to evaluate whether prolonged exposure to spaceflight increases the risk for premature osteoporosis in International Space Station (ISS) astronauts. The DXA scans of crewmembers'BMD during the first decade of the ISS existence showed precipitous declines in BMD for the hip and spine after the typical 6-mo missions. However, a concern exists that skeletal integrity cannot be sufficiently assessed solely by DXA measurement of BMD. Consequently, use of relatively new research technologies is being proposed to NASA for risk surveillance and to enhance long-term management of skeletal health in long-duration astronauts.
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