Bone Density Registry Review
Questions with Answers
According to the WHO criteria, for the diagnosis of osteoporosis, based on
the measurement of bone density is - -2.5 standard deviations or more
below the young adult peak bone density
-Name the current gold standard technique for measuring bone density - -
DXA
-Cancellous bone is also known as what? - -Trabecular bone
-What is the anatomical landmark of the proximal femur that indicates the
best visual indication of the degree of rotation of the proximal femur? - -
Lesser trochanter
-Which lumbar vertebra is described as having a characteristic shape of an X
or H on a DXA PA spine scan? - -L4
-Name all of the bisphosphonates for prevention and treatment of
osteoporosis - -Alendronate, risedronate, ibandronate
-Name the bisphosphonate for treatment only of osteoporosis - -Zolendronic
acid (Reclast)
-What medication used to be classified as a SERM and is an estrogen
agonist/antagonist and reduces breast cancer - -Ralaxofene (Evista)
-Is Forteo a bisphosphonate? - -No, it's an anabolic
-Quantitative computed tomography or QCT results are usually reported in -
-Grams per cubic centimeter g/cm3
-Quantitative computed tomography is - -Volumetric measurement of 100%
trabecular bone at the spine
-Peripheral bone mineral density measurements are advocated for - -
Screening
-What is the most important clinical consequence of osteoporosis? - -
Fracture
, -What is the name of the tool that integrates clinical information in a
quantitative manner to predict a ten-year probability of major osteoporotic
fracture for both men and women? - -FRAX
-Ability to measure true value and most important for DXA and assessment
of fracture risk - -Accuracy
-Is precision or accuracy mostly affected by technology? - -Accuracy
-The reproducibility of measurements and most important for serial
measurements to determine if there has been interval change - -Precision
-Is accuracy or precision mostly affected by the technologist? - -Precision
-What is the percentage of trabecular bone in the skeleton? - -20%
-The forearm is not used to monitor the effects of therapy for osteoporosis
because - -Rate of change in BMD is too slow
-Which of the following sites is mostly composed of cortical bone? Distal
forearm, femoral neck, proximal forearm, vertebral bodies - -Proximal
forearm
-What is the name of the isotope that was used in single photon
absorptiometry - -Iodine - 125
-What is the texture index that evaluates the pixel grey level variations in
lumbar spine DXA images? - -Trabecular bone score or TBS
-Type two primary osteoporosis occurs - -Generally after age 70
-What technique used images of the hand and an aluminum wedge? - -
Radiographic absorptiometry RA
-New bone is formed by the - -Osteoblasts
-Cancellous bone is also known as - -Trabecular bone
-How would you start labeling the vertebral bodies on a PA lumbar scan? - -
Start at L4 and count up
-With changes in rotation of the femoral neck, what happens? - -Increases
the BMD
-In the United States, if the daily QC fails, what should be your first step of
action? - -Repeat the scan
Questions with Answers
According to the WHO criteria, for the diagnosis of osteoporosis, based on
the measurement of bone density is - -2.5 standard deviations or more
below the young adult peak bone density
-Name the current gold standard technique for measuring bone density - -
DXA
-Cancellous bone is also known as what? - -Trabecular bone
-What is the anatomical landmark of the proximal femur that indicates the
best visual indication of the degree of rotation of the proximal femur? - -
Lesser trochanter
-Which lumbar vertebra is described as having a characteristic shape of an X
or H on a DXA PA spine scan? - -L4
-Name all of the bisphosphonates for prevention and treatment of
osteoporosis - -Alendronate, risedronate, ibandronate
-Name the bisphosphonate for treatment only of osteoporosis - -Zolendronic
acid (Reclast)
-What medication used to be classified as a SERM and is an estrogen
agonist/antagonist and reduces breast cancer - -Ralaxofene (Evista)
-Is Forteo a bisphosphonate? - -No, it's an anabolic
-Quantitative computed tomography or QCT results are usually reported in -
-Grams per cubic centimeter g/cm3
-Quantitative computed tomography is - -Volumetric measurement of 100%
trabecular bone at the spine
-Peripheral bone mineral density measurements are advocated for - -
Screening
-What is the most important clinical consequence of osteoporosis? - -
Fracture
, -What is the name of the tool that integrates clinical information in a
quantitative manner to predict a ten-year probability of major osteoporotic
fracture for both men and women? - -FRAX
-Ability to measure true value and most important for DXA and assessment
of fracture risk - -Accuracy
-Is precision or accuracy mostly affected by technology? - -Accuracy
-The reproducibility of measurements and most important for serial
measurements to determine if there has been interval change - -Precision
-Is accuracy or precision mostly affected by the technologist? - -Precision
-What is the percentage of trabecular bone in the skeleton? - -20%
-The forearm is not used to monitor the effects of therapy for osteoporosis
because - -Rate of change in BMD is too slow
-Which of the following sites is mostly composed of cortical bone? Distal
forearm, femoral neck, proximal forearm, vertebral bodies - -Proximal
forearm
-What is the name of the isotope that was used in single photon
absorptiometry - -Iodine - 125
-What is the texture index that evaluates the pixel grey level variations in
lumbar spine DXA images? - -Trabecular bone score or TBS
-Type two primary osteoporosis occurs - -Generally after age 70
-What technique used images of the hand and an aluminum wedge? - -
Radiographic absorptiometry RA
-New bone is formed by the - -Osteoblasts
-Cancellous bone is also known as - -Trabecular bone
-How would you start labeling the vertebral bodies on a PA lumbar scan? - -
Start at L4 and count up
-With changes in rotation of the femoral neck, what happens? - -Increases
the BMD
-In the United States, if the daily QC fails, what should be your first step of
action? - -Repeat the scan
