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ARRT Bone Density Set Final Exam Prep Test Bank Newest
Actual Exam With Complete 300+ Questions And Correct
Detailed Answers (Verified Answers) |Already Graded A+
According to the WHO criteria, what is the diagnosis of osteoporosis
based on the measurement of bone density? - ANSWERS--2.5 SD or
more below the young adult peak bone density
What is the gold standard technique for measuring bone density? -
ANSWERS--DXA
Cancellous bone is also know as? - ANSWERS--Trabecular Bone
What is the anatomical landmark on the proximal femur that gives
the best visual indication of the degree of rotation of the proximal
femur? - ANSWERS--Lesser Trochanter
Which lumbar vertebra is described as having a characteristic shape
of an X or and H on a DXA PA spine scan? - ANSWERS--L4
Is Forteo a bisphosphonate? - ANSWERS--NO
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Quantitative Computated Tomography (QCT) - ANSWERS---
measurements are volumetric
-trabecular bone can be isolated from cortical bone
-accuracy may be affected by marrow fat
Peripheral BMD measurements are advocated for _____________? -
ANSWERS--Screening
What is the most important clinical consequence of osteoporosis? -
ANSWERS--Fracture
What is the name of the tool that integrates clinical information in a
quantitative manner to predict a 10-year probability of major
osteoporotic fracture for both men and women? - ANSWERS--FRAX
What is the major source of precision error in clinical practice? -
ANSWERS--Technologist
What is the percentage of trabecular bone in the skeleton? -
ANSWERS--20 %
The forearm is not used to monitor the effects of therapy for
osteoporosis because....... - ANSWERS--rate of change in BMD is too
slow
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What site is mostly composed of cortical bone? - ANSWERS--Proximal
forearm
What are the advantages of QUS over x-ray methodologies for BMD
measurement? - ANSWERS---ultrasound is comparatively inexpensive
-patients are not subjected to ionizing radiation
-ultrasound exams are quick to perform
What is the name of the isotope that was used in SPA? - ANSWERS--
Iodine-125
What is the texture index that evaluates the pixel gray-level
variations in lumber spine DXA images? - ANSWERS--TBS (Trabecular
Bone Score)
When does type 2 primary osteoporosis generally occur? -
ANSWERS--after age 70
What technique used images of the hand and an aluminum wedge? -
ANSWERS--RA (Radiograhic Absorptiometry)
New bone is formed by the ___________? - ANSWERS--osteoblasts
, 4|Page
Cancellous bone is also known as _______________? - ANSWERS--
Trabecular bone
How would you start labeling the vertebral bodies on a PA lumbar
scan? - ANSWERS--Start at L4 and count/label up
With changes in rotation of the femoral neck, what happens? -
ANSWERS--Increases the BMD
If daily QC fails, what should be your first step of action? - ANSWERS-
--repeat the scan
-if scan fails again, then call for help
Although the technology is similar with all of the DXA units, the BMD
results are different because.......... - ANSWERS---different calibration
standards
-algorithms to calculate BMD
-differences in the ROI
-different databases
ARRT Bone Density Set Final Exam Prep Test Bank Newest
Actual Exam With Complete 300+ Questions And Correct
Detailed Answers (Verified Answers) |Already Graded A+
According to the WHO criteria, what is the diagnosis of osteoporosis
based on the measurement of bone density? - ANSWERS--2.5 SD or
more below the young adult peak bone density
What is the gold standard technique for measuring bone density? -
ANSWERS--DXA
Cancellous bone is also know as? - ANSWERS--Trabecular Bone
What is the anatomical landmark on the proximal femur that gives
the best visual indication of the degree of rotation of the proximal
femur? - ANSWERS--Lesser Trochanter
Which lumbar vertebra is described as having a characteristic shape
of an X or and H on a DXA PA spine scan? - ANSWERS--L4
Is Forteo a bisphosphonate? - ANSWERS--NO
,2|Page
Quantitative Computated Tomography (QCT) - ANSWERS---
measurements are volumetric
-trabecular bone can be isolated from cortical bone
-accuracy may be affected by marrow fat
Peripheral BMD measurements are advocated for _____________? -
ANSWERS--Screening
What is the most important clinical consequence of osteoporosis? -
ANSWERS--Fracture
What is the name of the tool that integrates clinical information in a
quantitative manner to predict a 10-year probability of major
osteoporotic fracture for both men and women? - ANSWERS--FRAX
What is the major source of precision error in clinical practice? -
ANSWERS--Technologist
What is the percentage of trabecular bone in the skeleton? -
ANSWERS--20 %
The forearm is not used to monitor the effects of therapy for
osteoporosis because....... - ANSWERS--rate of change in BMD is too
slow
,3|Page
What site is mostly composed of cortical bone? - ANSWERS--Proximal
forearm
What are the advantages of QUS over x-ray methodologies for BMD
measurement? - ANSWERS---ultrasound is comparatively inexpensive
-patients are not subjected to ionizing radiation
-ultrasound exams are quick to perform
What is the name of the isotope that was used in SPA? - ANSWERS--
Iodine-125
What is the texture index that evaluates the pixel gray-level
variations in lumber spine DXA images? - ANSWERS--TBS (Trabecular
Bone Score)
When does type 2 primary osteoporosis generally occur? -
ANSWERS--after age 70
What technique used images of the hand and an aluminum wedge? -
ANSWERS--RA (Radiograhic Absorptiometry)
New bone is formed by the ___________? - ANSWERS--osteoblasts
, 4|Page
Cancellous bone is also known as _______________? - ANSWERS--
Trabecular bone
How would you start labeling the vertebral bodies on a PA lumbar
scan? - ANSWERS--Start at L4 and count/label up
With changes in rotation of the femoral neck, what happens? -
ANSWERS--Increases the BMD
If daily QC fails, what should be your first step of action? - ANSWERS-
--repeat the scan
-if scan fails again, then call for help
Although the technology is similar with all of the DXA units, the BMD
results are different because.......... - ANSWERS---different calibration
standards
-algorithms to calculate BMD
-differences in the ROI
-different databases
