Dxa Mock Exam Updated Questions And Correct Answers

DXA MOCK EXAM UPDATED QUESTIONS AND
CORRECT ANSWERS
Question:
1. Which of the following is a daily QC test to check scan-ner performance?
A. Precision tests
B. Phantom Scanning
C. Cross Calibration
D. Determining the Least Significant Change (LSC)
Answer:
B. Phantom Scanning

Question:
2. 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
Answer:
C. T4;L5

Question:
3. How many sets of sinuses are in the cranium?
A. 2
B. 4
C. 6
D. 12
Answer:
B. 4

Question:
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
Answer:
A. Cortical and trabecular

Question:
5. The oldest bone cells of the skeleton live about:
A. 2 yrs
B. 5 yrs
C. 7 yrs
D. 10 yrs

,Answer:
D. 10 yrs

Question:
6. An area of bone that contacts another bone is a(n):
A. Articular surface
B. Process
C. Eminence
D. Condyle
Answer:
A. Articular surface

Question:
7. Why is standard anatomical position used?
A. To improve the consistency of medical check ups
B. To reduce pt discomfort while standing
C. To divide the body into the anatomical planes of
reference
D. To simplify descriptions of the location and orienta-
tion of bones
Answer:
D. To simplify descriptions
of the location and orien-tation of bones

Question:
8. When evaluating bone density, what statistical value is calculated by dividing the standard
deviation by the mean?
A. BMC
B. BMD
C. CV
D. SD
Answer:
C. CV

Question:
9. Which of the following statements is TRUE about bone remodeling?
A. Bone remodeling primarily affects cortical bone
B. The rate of bone remodeling increases with age
C. Bone mass increases when formation is faster than
resorption
D. Most skeletal sites have the same remodeling rates
Answer:
C. Bone mass increases
when formation is faster than resorption

Question:
10. Osteosarcomas:
A. Often metastasize in the liver

, B. Cause characteristic pain the joints
C. Affect primarily adolescents and young adults
D. Are benign tumors in long bones
Answer:
C. Affect primarily adoles-
cents and young adults

Question:
11. Osteoarthritis is characterized by:
A. Osteophyte formation
B. Pain in feet and ankles
C. Sudden onset of menopause
D. Chronic inflammation at joints
Answer:
A. Osteophyte formation

Question:
12. Spina bifida occulta:
A. Can cause paralysis
B. Looks similar to a laminectomy on DXA scans
C. Relatively common malignant process
D. Affects 30-40% of the general population
Answer:
B. Looks similar to a
laminectomy on DXA scans

Question:
13. Idopathic scoliosis:
A. Requires treatment
B. Is defined by less than 10 degree curvature
C. Affects primarily adults
D. Is sometimes treated with bracing or surgery
Answer:
D. Is sometimes treated
with bracing and surgery

Question:
14. Which of the following biochemical markers indicate osteoblast activity?
A. Bone-specific alkaline phosphatase
B. N-Telopeptide of type I collagen
C. Pyridinoline cross-links
D. C-Terminal telopeptide of type I collagen
Answer:
A. Bone-specific alkaline
phosphatase