Complete Questions And Correct Detailed Answers
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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
What are two types of bone tissue generally found in long bones?
A. Cortical and trabecular
B. Woven and synovial
C. Cartilaginous and medullary
D. Periosteum and endosteum
A. Cortical and trabecular
The oldest bone cells of the skeleton live about:
A. 2 yrs
,B. 5 yrs
C. 7 yrs
D. 10 yrs
D. 10 yrs
An area of bone that contacts another bone is a(n):
A. Articular surface
B. Process
C. Eminence
D. Condyle
A. Articular surface
1. What does DXA stand for?
A. Dual X-ray Absorption
B. Digital X-ray Analysis
C. Dual-energy X-ray Absorptiometry
D. Differential X-ray Attenuation
Correct Answer: C
2. DXA measures bone density by:
A. Measuring bone thickness
B. Comparing absorption of two X-ray energies
C. Using ultrasound waves
D. Measuring calcium directly
Correct Answer: B
3. DXA results are reported in:
A. mg/mL
B. g/cm²
C. kg/m²
D. HU
Correct Answer: B
, 4. Which factor MOST affects DXA accuracy?
A. Patient height
B. Patient positioning
C. Room temperature
D. Table height
Correct Answer: B
5. Which artifact can falsely increase BMD?
A. Motion
B. Metal objects
C. Poor positioning
D. Low BMI
Correct Answer: B
SECTION 2: PATIENT PREPARATION & SAFETY
6. Before a DXA exam, patients should avoid:
A. Drinking water
B. Eating calcium supplements within 24 hours
C. Wearing cotton clothing
D. Breathing deeply
Correct Answer: B
7. DXA is CONTRAINDICATED in:
A. Elderly patients
B. Pregnant patients
C. Osteoporotic patients
D. Postmenopausal women
Correct Answer: B