DEXA EXAM 2025 QUESTIONS 100%
VERIFIED ANSWERS.
What is bone densitometry? - ANSWERSThe general term encompassing the art and
science of measuring the bone mineral content (BMC) and bone mineral density (BMD)
of specific skeletal sites or the whole body.
What are the BMC and BMD measurements used for? - ANSWERSUsed to assess
bone strength
Assist with diagnosis of diseases associated with low bone density (especially
osteoporosis)
Monitor the effects of therapy for such diseases
Predict risk of future fractures.
In the BMD report, which numerical value expresses a bone density result against the
average bone density for a healthy women who is the same age? - ANSWERSZ-score
The _____ is a numerical comparison to the average bone density found at peak bone
mass. - ANSWERST-score
Which of the following tests is considered the fastest peripheral densitometer? -
ANSWERSPIXI (Peripheral Instantaneous X-ray Imager Bone Densitometer)
The most effective method to aid in the determination of the spine's response to anti-
osteoporosis drug therapy is___. - ANSWERSDXA
DEXA is considered the gold standard for bone density measurement because of
its____. - ANSWERSLow dose, high precision, and speed.
The Z-score should be used to make a diagnosis in _____ - ANSWERSMale and
females age 20 and younger.
The T-score is reported with ____ decimal places to the right of the decimal point. -
ANSWERS1
The vertebral levels that are best seen for VFA (vertebral fracture assessment) during a
DXA lateral spine scan are___ - ANSWERST7-L4.
A patient with a visible vertebral fracture on the lateral spine DXA scan with a total hip
T-score of -2.6 would be diagnosed with_____. - ANSWERSSevere osteoporosis
The World Health Organization defines osteoporosis as someone having a T-score
of/between _____. - ANSWERS-2.5 or less
,The World Health Organization defines osteopenia as someone having a T-score
of/between ____. - ANSWERS-1.0 and -2.5
What term best describes the sum of data values divided by the number of values? -
ANSWERSMean
What term best describes a statistical measure of spread or variability? -
ANSWERSStandard deviation
According to the World Health Organization, a patient with a bone mineral density T-
score of less than -2.5 should also be reported as having? - ANSWERSOsteoporosis
What percentage of bone loss must be present before it is demonstrated on plain film
radiography (x-ray)? - ANSWERS40
What is an INCORRECT statement regarding osteoporosis? - ANSWERSA patient must
have a history of a fracture to be considered osteoporotic.
The type of BMD testing that utilizes ultrasound is____. - ANSWERSQUS
The technology of DXA testing utilizes____. - ANSWERSX-ray
The most appropriate value for reporting BMD assessment in children is____. -
ANSWERSZ-score
The critical variable in the diagnosis of osteoporosis for adults is the_____. -
ANSWERSPatient's T-score
The current "gold standard" for the measurement of bone density is the _____. -
ANSWERSDEXA
Plain skeletal radiographs can demonstrate demineralization only after ____% or more
of the bone density has been lost. - ANSWERS40
Ther percentage paired with the T-score indicating whether a bone density is above or
below the peak bone density is called______. - ANSWERSYoung adult percentage
A standard deviation equal about_____percent and compares how far above or below
the BMD results reported are to the norm. - ANSWERS10-12
A YA (young adult) percentage reported as 75% is an indicator of probable loss of BMD.
True or False. - ANSWERSTrue
What term best describes a measure of the average distance between each of a set o
data points and their mean value? - ANSWERSVariance
, When utilizing the T-score scale, the average is assigned the T-score of ____. -
ANSWERS50
Each standard deviation reduction in age-related bone density increases the risk of
experiencing an osteoporotic fracture by____. - ANSWERS50%
For each standard deviation of bone density below the young adult mean, the fracture
risk generally increases by ___ fold. - ANSWERS2
On the Z-score scale the average value is assigned the value of____. - ANSWERS0
On the T-score scale the average value is assigned the value of _____. - ANSWERS50
The Z-score indicates how the patient compares to _____. - ANSWERSTheir age
related peers
The Z-score compares the patient's bone density with the average bones mass of a
person the same age, sex, and weight and is best used for ____patients. -
ANSWERSPediatric
The mean is____. - ANSWERSThe sum of the values divided by the number of values
Standard deviation is_____. - ANSWERSThe root mean square (RMS) deviation of the
values from their arithmetic mean
The unit necessary for a vertebral fracture assessment (VFA) to be performed is___. -
ANSWERSFan-beam densitometry
All of the following statements are correct EXCEPT:
1. Supine lateral position requires densitometer with rotating c-arm
2. Lateral decbitus position requires a triangular pillow between the patient's side and
the table to prevent functional scoliotic curve in side lying posture
3. Prone lateral position requires a triangular pillow betweent he patient's side and the
table to prevent functional scoliotic curve in side lying posture. - ANSWERSProne
lateral position requires a triangular pillow betweent he patient's side and the table to
prevent functional scoliotic curve in side lying posture.
The procedure used for the measurement of BMD that utilized and isotope was ____. -
ANSWERSDual photon absorptiometry (DPA)
What test demonstrates the bone in three dimensions and measure the voumetric
density of the bone? - ANSWERSQCT (quantitative computed tomography)
The test that emits the highest radiation dose for the evaluation of bone density is the
______ - ANSWERSQCT (quantitative computed tomography)
VERIFIED ANSWERS.
What is bone densitometry? - ANSWERSThe general term encompassing the art and
science of measuring the bone mineral content (BMC) and bone mineral density (BMD)
of specific skeletal sites or the whole body.
What are the BMC and BMD measurements used for? - ANSWERSUsed to assess
bone strength
Assist with diagnosis of diseases associated with low bone density (especially
osteoporosis)
Monitor the effects of therapy for such diseases
Predict risk of future fractures.
In the BMD report, which numerical value expresses a bone density result against the
average bone density for a healthy women who is the same age? - ANSWERSZ-score
The _____ is a numerical comparison to the average bone density found at peak bone
mass. - ANSWERST-score
Which of the following tests is considered the fastest peripheral densitometer? -
ANSWERSPIXI (Peripheral Instantaneous X-ray Imager Bone Densitometer)
The most effective method to aid in the determination of the spine's response to anti-
osteoporosis drug therapy is___. - ANSWERSDXA
DEXA is considered the gold standard for bone density measurement because of
its____. - ANSWERSLow dose, high precision, and speed.
The Z-score should be used to make a diagnosis in _____ - ANSWERSMale and
females age 20 and younger.
The T-score is reported with ____ decimal places to the right of the decimal point. -
ANSWERS1
The vertebral levels that are best seen for VFA (vertebral fracture assessment) during a
DXA lateral spine scan are___ - ANSWERST7-L4.
A patient with a visible vertebral fracture on the lateral spine DXA scan with a total hip
T-score of -2.6 would be diagnosed with_____. - ANSWERSSevere osteoporosis
The World Health Organization defines osteoporosis as someone having a T-score
of/between _____. - ANSWERS-2.5 or less
,The World Health Organization defines osteopenia as someone having a T-score
of/between ____. - ANSWERS-1.0 and -2.5
What term best describes the sum of data values divided by the number of values? -
ANSWERSMean
What term best describes a statistical measure of spread or variability? -
ANSWERSStandard deviation
According to the World Health Organization, a patient with a bone mineral density T-
score of less than -2.5 should also be reported as having? - ANSWERSOsteoporosis
What percentage of bone loss must be present before it is demonstrated on plain film
radiography (x-ray)? - ANSWERS40
What is an INCORRECT statement regarding osteoporosis? - ANSWERSA patient must
have a history of a fracture to be considered osteoporotic.
The type of BMD testing that utilizes ultrasound is____. - ANSWERSQUS
The technology of DXA testing utilizes____. - ANSWERSX-ray
The most appropriate value for reporting BMD assessment in children is____. -
ANSWERSZ-score
The critical variable in the diagnosis of osteoporosis for adults is the_____. -
ANSWERSPatient's T-score
The current "gold standard" for the measurement of bone density is the _____. -
ANSWERSDEXA
Plain skeletal radiographs can demonstrate demineralization only after ____% or more
of the bone density has been lost. - ANSWERS40
Ther percentage paired with the T-score indicating whether a bone density is above or
below the peak bone density is called______. - ANSWERSYoung adult percentage
A standard deviation equal about_____percent and compares how far above or below
the BMD results reported are to the norm. - ANSWERS10-12
A YA (young adult) percentage reported as 75% is an indicator of probable loss of BMD.
True or False. - ANSWERSTrue
What term best describes a measure of the average distance between each of a set o
data points and their mean value? - ANSWERSVariance
, When utilizing the T-score scale, the average is assigned the T-score of ____. -
ANSWERS50
Each standard deviation reduction in age-related bone density increases the risk of
experiencing an osteoporotic fracture by____. - ANSWERS50%
For each standard deviation of bone density below the young adult mean, the fracture
risk generally increases by ___ fold. - ANSWERS2
On the Z-score scale the average value is assigned the value of____. - ANSWERS0
On the T-score scale the average value is assigned the value of _____. - ANSWERS50
The Z-score indicates how the patient compares to _____. - ANSWERSTheir age
related peers
The Z-score compares the patient's bone density with the average bones mass of a
person the same age, sex, and weight and is best used for ____patients. -
ANSWERSPediatric
The mean is____. - ANSWERSThe sum of the values divided by the number of values
Standard deviation is_____. - ANSWERSThe root mean square (RMS) deviation of the
values from their arithmetic mean
The unit necessary for a vertebral fracture assessment (VFA) to be performed is___. -
ANSWERSFan-beam densitometry
All of the following statements are correct EXCEPT:
1. Supine lateral position requires densitometer with rotating c-arm
2. Lateral decbitus position requires a triangular pillow between the patient's side and
the table to prevent functional scoliotic curve in side lying posture
3. Prone lateral position requires a triangular pillow betweent he patient's side and the
table to prevent functional scoliotic curve in side lying posture. - ANSWERSProne
lateral position requires a triangular pillow betweent he patient's side and the table to
prevent functional scoliotic curve in side lying posture.
The procedure used for the measurement of BMD that utilized and isotope was ____. -
ANSWERSDual photon absorptiometry (DPA)
What test demonstrates the bone in three dimensions and measure the voumetric
density of the bone? - ANSWERSQCT (quantitative computed tomography)
The test that emits the highest radiation dose for the evaluation of bone density is the
______ - ANSWERSQCT (quantitative computed tomography)
