dexa 2 | Quiz

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According to WHO, for the diagnosis of osteoporosis, based on the measurement of bone density is:

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What is the most common technique that is used to measure BMD?

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What is the most common osteoporotic fracture?

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In bone densitometry, what is the primary responsibility of the technologist?

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Which of the following is considered an uncontrollable risk factor for osteoporosis?

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Which of the following measures more trabecular bone?

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Primary osteoporosis Type 1, is related to

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Identify the incorrect statement from the following:

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Cancellous bone is also known as :

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New bone matrix is formed by:

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What percentage of trabecular bone is found in the PA spine?

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Currently, the most accurate method to determine a patient’s response to therapy form osteoporosis is:

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Which of the following does not help in achieving peak bone mass?

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Which of the following statement is false concerning QUS advantages over x-ray base methodologies for BMD measurements?

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which of following site is mostly composed of cortical bone

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What is the anatomical landmark on the proximal femur that indicates the best visual indication of the degree of rotation of the proximal femur?

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Which lumbar vertebra is described as having a characteristic shape of an X or H on a DXA PA spine scan?

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What is the name of the radionuclitide used in DPA?

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The forearm is not used to monitor the effects of therapy for osteoporosis because

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Which of the following is not a bisphosphonate?

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The primary mechanism of action of anti-resorptive therapies is the result of direct interaction with:

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The WHO criteria for diagnosing osteoporosis was initially deﬁned to apply to

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The measurement of peripheral BMD is advocated for

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The PA spine mostly measures the:

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Which of the following statement about QCT measurements of bone density of the spine is not
True?

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ln order to do a compare analysis:

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How many degrees should you rotate the femur when positioning for a proximal femur scan?

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When should Z-scores be used to make a diagnosis, instead of T-scores?

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Which of the following bone parameters is measured in grams?

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Which lumbar vertebra has the widest transverse process?

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The region of the proximal femur lying on the border of the femoral neck is termed:

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What is important for serial monitoring?

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If the daily QC fails, (in the United States) what should be your first step of action?

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With changes in rotation of the femoral neck what happens?

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Which of the following would best describe low bone mass due to menopause?

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According to WHO, if a healthy female age 36 (female with no known medical condition present, all body parts working perfecting) has a T-score of 1 6 SD how would she be diagnosed?

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Which of the following term best describes the sum of data values divided by the number of values?

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How many decimal places to the right of the decimal point is used in reporting the T-scores?

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At low energies the majority of x-ray interactions are:

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What concept should always guide radiation protection effects?

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If a patient has a history of hyper-parathyroidism, which of the following would be the preferred site to evaluate ?

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Which of the following classes of cells are involved in bone remodeling?

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Which of the following has the highest percentage of cortical bone?

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Which of the following bone parameters is measured in grams per centimeter squared?

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What is the percentage of trabecular bone in the skeleton?

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How would start labeling the vertebral bodies on a PA lumbar scan?

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What is the major source of precision error in clinical practice?

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Which of the following is correct?

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During analyzes of the lumbar spine, what would help you identify the vertebral bodies?

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A great forearm scan should include all of the following except:

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Sunlight is the main source of vitamin:

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Bisphosphonates prevent bone loss by:

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DXA results may be influenced by:

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Which of the following would best describe the effective dose for a central DXA scan?

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When measuring the proximal femur, which of the following statements is true?

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Which of the following statements is true regarding DXA?

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How often should you perform the QA on the DXA unit?

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Why is the non-dominant arm used in bone densitometry?

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If a patients BMC is 60.58 and the area is 61.60 what is her BMD?

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All of the following are true, except:

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What is the distance a technologist should be away from the edge of the DXA table with a pencil beam scanner?

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What is the most common osteoporotic fracture?

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Two bones with the same volumetric densities may have different densities when measured with DXA because:

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Regarding the Shewart Rules, the control limits are based on what percentage of the average values?

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All follow-up DXA scans should be compared to:

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With DXA, regarding the PA spine, which vertebra is expected to have the lowest bone mineral density?

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A DXA scanner that uses a single detector and a pinhole collimator is:

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The characteristic shapes of the vertebrae seen on the spine DXA image are primarily based on the appearance of the:

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When scanning the proximal femur, what is the anatomical landmark to look at if you have correct rotation?

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To determine the least significant change at 95% confidence level (for baseline and one follow-up scan), what is the "number" which the precision error is multiplied to determine the least significant change?

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A technologist should perform a precision study in order to:

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How many places to the right of the decimal point is used in reporting BMD?

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The name of the forearm sites is based on what?

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What skeletal site may be preferred for assessing early menopause or following oophorectomy?

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When analyzing the PA spine, which of the following is a "no can do?

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If you are very fortunate, and you get a new DXA unit, what must be performed in order to do compare studies?

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All of the following are examples of weight-bearing exercise except:

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What type of bone with long term use of steroids affect?

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If a patient has had an Iaminectomy, how would that affect the results?

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What are the two most common methods for shifting the energies in DXA units?

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Why do you use a leg block, when performing a PA spine DXA scan? Select all that appy.

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What is the term often used to express the precision of the DXA unit?

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Why do you use a “hip positioner", during scanning of the proximal femur?

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lf a patients is found to have coins in their pocket while obtaining the proximal femur what should you do.

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A patient with an elevated alkaline phosphatase may be an indicator of

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What is the percentage of cortical bone (compact bone) in the skeleton?

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What angle should the patient's leg be positioned on the leg block for the PA spine?

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What year was the Bone Mass Measurement Act proposed?

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What pharmaceutical may be suggested for a woman with high risk of breast cancer and elevated lipids?

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In bone densitometry, what describes the ability to reproduce the measurement when it is performed under identical conditions?

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Decide which of the following is the most important factor to consider when performing a DXA scan?

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How can a patient be deprived of vitamin D?

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Which of the following calcium supplements should be the choice for women who are at risk of kidney stone formation?

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The correct way to measure radiation dose is as effective dose, expressed as:

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All of the following are risk factors for 733 except:

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QUS what is the gold standard to measure bone density?

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Cortical bone makes up what?

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All of the following are correct except:

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What are the four classifications that apply to the heel?

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Secondary osteoporosis is defined as:

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The forearm, pelvis, and scapula all belong to which skeletal classification?

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When there is an imbalance/uncoupling of the remodeling cycle, the result is

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During a DXA of the hip of a thin patient, a mottled or moth eaten appearance at the edge is seen, what may be helpful to correct this?

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What is the bone edge detection methodology?

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What sites are preferred for children?

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In making a diagnosis for children, what are some guidelines? Select all that apply.

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What is the only anabolic pharmaceutical on the market for treatment of osteoporosis?

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Although the technology is similar with all the DXA units, the BMD results are different because...select all that apply.

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For low energies, the most common process of absorption is the:

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How many patients and how many times do you scan them in order to perform a precision study? Select all that apply.

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Phantoms that mimic the shape and size of a skeletal region are called:

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If the QC graph shows a gradual decline in BMD overtime, what should you do?

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Regarding bone densitometry, which of the following best describes accuracy?

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Which of the following are clinical signs and consequences of vertebral fractures? Select all that apply.

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All of the following are markers of bone formation, except?

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Pencil beam DXA units usually have shorter scanning times and better resolution compared to fan beam units.

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Quantitative ultrasonometry measures the broad band attenuation properties of bone.

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The correct term for the scanning pattern of a pencil beam unit is rectilinear.

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Archiving patient’s scans and running the system back-up are one in the same.

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The weight Iimit for the DXA table is manufacturer specific?

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When analyzing the proximal femur the box measuring the neck should include the greater trochanter.

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In regards to the International society for Clinical Densitometry 2013 Official Positions, Osteoporosis cannot be diagnosed in men under the age 50 on the basis of BMD alone.

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Cortical bone is also known as cancellous bone.

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With fan beam scanners, scanning occurs point by point.

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Discordance is a term that is rarely used in DXA.

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The smaller the %CV, the better the accuracy and precision.

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Rheumatoid arthritis can contribute to the development of osteoporosis.

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Bone loss occurs when resorption exceeds formation.

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T-scores are useful for the expression of relative risk.

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T-scores should be used in serial monitoring.

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Sievert refers to effective dose.

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The measure of the variability or the spread of data around the mean is termed standard deviation.

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Accuracy is most important for diagnosis, less important for serial monitoring.

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The ultra distal part of the forearm is mostly trabecular bone.

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With VFA, you are measuring the BMD L4 through T4.

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Cortical bone is primarily affected with an estrogen deficient woman.

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Precision is the ability to reproduce a measurement when performed under identical conditions.

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When a patient comes back for a follow-up scan, it's no problem if you don't use the compare/copy function.

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The Tanner and Whitehouse (TW2) method is often used to indicate bone age in children.

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The T-score is the number of SDs an individual’s BMD is from the average BMD for sex-matched young normal peak bone mass.

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Caucasians and Asians are at increased risk to developing osteoporosis compared to otherethnic groups.

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Smoking is not recognized as a risk factor for the development of osteoporosis.

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