Bone Densitometry Test B
What is the chief benefit of using a high and low x-ray energy source with a DXA
system?
1) Reduces patient dose significantly.
2) Reduces wear and tear on the x-ray tube to change energies.
3) Demonstrates attenuation difference between bone and soft tissue.
4) Reduces postprocessing time of bone for the digital image. - answer3
The purpose of bone densitometry is to:
1) establish the diagnosis of osteoporosis.
2) assess the response to osteoporosis therapy.
3) measure bone mineral density.
4) do all of the above. - answer4
Which vertebral region(s) is (are) analyzed during a DXA scan?
1) T12
2) T7 to L1
3) L1 to L5
4) L4 to S2 - answer3
All are risk factors for osteoporosis, except:
1) daily physical activity.
2) alcohol consumption.
3) low body weight.
4) low calcium intake. - answer1
Bone-destroying cells are called:
1) osteoblasts.
2) osteoclasts.
3) cancellous.
4) cortical. - answer2
Peak bone mass is reached at about age _____ years.
1) 10 to 20
2) 20 to 30
3) 30 to 40
4) 40 to 50 - answer2
The most common osteoporotic fracture is found in the:
1) hips.
2) femurs.
What is the chief benefit of using a high and low x-ray energy source with a DXA
system?
1) Reduces patient dose significantly.
2) Reduces wear and tear on the x-ray tube to change energies.
3) Demonstrates attenuation difference between bone and soft tissue.
4) Reduces postprocessing time of bone for the digital image. - answer3
The purpose of bone densitometry is to:
1) establish the diagnosis of osteoporosis.
2) assess the response to osteoporosis therapy.
3) measure bone mineral density.
4) do all of the above. - answer4
Which vertebral region(s) is (are) analyzed during a DXA scan?
1) T12
2) T7 to L1
3) L1 to L5
4) L4 to S2 - answer3
All are risk factors for osteoporosis, except:
1) daily physical activity.
2) alcohol consumption.
3) low body weight.
4) low calcium intake. - answer1
Bone-destroying cells are called:
1) osteoblasts.
2) osteoclasts.
3) cancellous.
4) cortical. - answer2
Peak bone mass is reached at about age _____ years.
1) 10 to 20
2) 20 to 30
3) 30 to 40
4) 40 to 50 - answer2
The most common osteoporotic fracture is found in the:
1) hips.
2) femurs.
