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DXA scans assume a constant relationship between the amounts of lean soft tissue and adipose tissue. This assumption leads to measurement errors, with an impact on accuracy as well as precision. To reduce soft-tissue errors in DXA, DXL technology was developed in the late 1990s by a team of Swedish researchers led by Prof. Ragnar Kullenberg.
DXA scans can also be used to measure total body composition and fat content with a high degree of accuracy comparable to hydrostatic weighing with a few important caveats. [18] [specify] From the DXA scans, a low resolution "fat shadow" image can also be generated, which gives an overall impression of fat distribution throughout the body. [19]
Bone density scans are recommended to monitor the bone mineral density. [17] The bone density scan is known as a dual energy X-ray absorptiometry scan (DEXA or DXA scan). It is a simple test, taking less than 15 minutes to perform.
A scanner used to measure bone density using dual energy X-ray absorptiometry. Bone density, or bone mineral density, is the amount of bone mineral in bone tissue.The concept is of mass of mineral per volume of bone (relating to density in the physics sense), although clinically it is measured by proxy according to optical density per square centimetre of bone surface upon imaging. [1]
Veterans' health care in the United States is separated geographically into 19 regions (numbered 1, 2, 4–10, 12 and 15–23) [1] known as VISNs, or Veterans Integrated Service Networks, into systems within each network headed by medical centers, and hierarchically within each system by division level of care or type.
DXA is only able to provide the areal bone mineral density. High-resolution peripheral quantitative computed tomography (HR-pQCT) is better than DXA at detecting bone microarchitecture, modeling whole-bone geometry using 3-dimensional information from scans. This method allows estimation of bone strength and other mechanical properties. [20]
The expensive and potentially dangerous radioactive sources used in SPA and DPA have been replaced by single X-ray absorptiometry (SXA) and dual-energy X-ray absorptiometry (DXA) since the late 1980s. Similar to DPA, the basic principle of DXA is to measure the high and low energy X-ray transmission of stable X-ray sources.
Naval Medical Center San Diego (NMCSD) is a United States Navy hospital in San Diego, California.It is also known as Bob Wilson Naval Hospital and informally referred to as "Balboa Hospital", and "The Pink Palace", due to the stucco of the first buildings that were constructed being pinkish in color.