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What are two types of calibration methods used by DXA scanners?
A. Phantom and precision
B. Crosswise and longitudinal
C. Internal and external
D. Continuous and automatic
C. internal and external
A(n): ____ scanning technique estimates bone mineral density based on 3D scans.
A. Areal
B. Projectional
C. Axial
D. Volumetric
D. Volumetric
____ measurements provides to evaluate bone health that is independent of pt body habitus.
A. BMD
B. BMC
C. Bone area
D. Bone scre
A. BMD
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,____ is the measure of variability that shows how spread out data is around the mean.
A. % coefficient of variation
B. Discordance
C. SD
D. Trueness
C. SD
The Third National Health and Nutrition Examination Survey developed a standardized
reference database for T-scores of the:
A. L spine
B. Hip
C. T spine
D. Forearm
B. Hip
The most critical performance measure for f/u scans and tracking a pt's BMD overtime is:
A. Accuracy
B. %CV
C. Trueness
D. Precision
D. Precision
____ is a measure of bone micro texture and a marker for the risk of osteoporosis.
A. Fracture risk assessment
B. Trabecular bone scone
C. T-score
D. Z-score
B. Trabecular bone score
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, In a graphic display of the spine calibration phantom scan, the upper and lower controls
represents (+ or -) ____ percent of the mean.
A. 1.0
B. 1.5
C. 2.0
D. 2.5
1.5
Which of the following is a daily QC test to check scanner performance?
A. Precision tests
B. Phantom Scanning
C. Cross Calibration
D. Determining the Least Significant Change (LSC)
B. Phantom Scanning
The region of interest (ROI) for vertebral assessment scans include the ____ through ____
vertebrae.
A. T1;T2
B. T2;L1
C. T4;L5
D. L1;L5
C. T4;L5
How many sets of sinuses are in the cranium?
A. 2
B. 4
C. 6
D. 12
B. 4
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