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Bone Densitometry Review Questions with Complete Solutions
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Bone Densitometry Review Questionswith Complete Solutions
2.5 SDs or more below the young adult peak bone density - -According to
WHO, for the diagnosis of osteoporosis, based on the measurement of bone
density is
a. 2.5 SDs or more below the young adult peak bone density and a fracture
b. 2.5 SDs or more below the young adult peak bone density
c. More than 1 SD but less than 2.5 SDs below the young adult peak bone
density
d. Not more than 1 SD below the young adult peak bone density
-DXA - -What is the most common technique that is used to measure BMD?
a. QUS
b. QCT
c. SXA
d. DXA
-Spine - -What is the most common osteoporotic fracture?
a. Hip
b. Shoulder
c. Spine
d. Wrist
-Time - -In bone densitometry, what is the primary responsibility of the
technologist?
a. Beam collimation
b. Distance
c. Shielding
d. Time
-Race - -Which of the following is considered an uncontrollable risk factor
for osteoporosis?
a. Exercise
b. Lifestyle choices
c. Smoking
d. Race
-QCT spine - -Which of the following measures more trabecular bone?
a. PA spine
b. Lateral spine
c. QCT spine
d. VFA
, -Menopause - -Primary osteoporosis Type 1, is related to
a. Aging
b. Disease
c. Medication
d. Menopause
-Most obese patients are at an increased risk of developing osteoporosis - -
Identify the incorrect statement from the following:
a. Caucasian and Asians are at an increased risk of developing osteoporosis
compared to other ethnic groups
b. Most obese patients are at an increased risk of developing osteoporosis
c. Women are at an increased risk of developing osteoporosis compared to
men because they achieve a lower peak bone mass and go through
menopause
d. Smoking is a recognized risk factor for the development of osteoporosis
-Trabecular bone - -Cancellous bone is also known as
a. Compact bone
b. Cortical bone
c. Trabecular bone
d. Osteophyte
-Osteoblasts - -New bone matrix is formed by:
a. Osteoblasts
b. Osteoclasts
c. Cortical bone
d. Cancellous bone
-66% - -What percentage of trabecular bone is found in the PA spine?
a. 1%
b. 33%
c. 50%
d. 66%
-Serial DXA measurements of the hip and spine - -Currently, the most
accurate method to determine a patient's response to therapy for
osteoporosis is:
a. Serial DXA measurements of the forearm
b. Serial DXA measurements of the hip and spine
c. Serial QUS measurements of the calcaneus
d. Serial QCT measurements of the spine
-Corticosteroid therapy - -Which of the following does not help in achieving
peak bone mass?
a. Normal puberty
b. Exercise
, c. Corticosteroid therapy
d. Adequate calcium and vitamin D intake
-The patients heel must be immersed in liquid during the procedure - -
Which of the following statement is false concerning QUS advantages over x-
ray base methodologies for BMD measurements?
a. QUS units are comparatively inexpensive
b. The patients heel must be immersed in liquid during the procedure
c. Patients are not subjected to ionizing radiation
d. Ultrasound examinations are quick to perform
-Proximal forearm - -Which of the following sites is mostly composed of
cortical bone?
a. Distal forearm
b. Femoral neck
c. Proximal forearm
d. Vertebral bodies
-Lesser trochanter - -Which is the anatomical landmark on the proximal
femur that indicates the best visual indication of the degree of rotation of the
proximal femur?
a. Femoral head
b. Femoral shaft
c. Greater trochanter
d. Lesser trochanter
-L4 - -Which lumbar vertebra is described as having a characteristic shape
of an X or H on a DXA PA spine scan?
a. L1
b. L2
c. L3
d. L4
-Gadolinium- 153 - -What is the name of the radionuclitide used in DPA?
a. Americium- 241
b. Gadolinium- 153
c. Iodine- 125
d. Technetium-99
-The rate of change in BMD is too slow - -The forearm is not used to monitor
the effects of therapy for osteoporosis because:
a. Accuracy is poor
b. Precision is poor
c. There is no effect
d. The rate of change in BMD is too slow
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