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dexa 2

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dexa 2
John Appleseed9305
Quiz von John Appleseed9305, aktualisiert more than 1 year ago
John Appleseed9305
Erstellt von John Appleseed9305 vor fast 9 Jahre
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Frage 1

Frage
According to WHO, for the diagnosis of osteoporosis, based on the measurement of bone density is:
Antworten
  • 2.5 SDs or more below the young adult peak bone density and a fracture
  • 2.5 SDs or more below the young adult peak bone density
  • More than 1 SD but less than 2.5 SDs below the young adult peak bone density
  • Not more than 1 SD below the young adult peak bone density

Frage 2

Frage
What is the most common technique that is used to measure BMD?
Antworten
  • QUS
  • QCT
  • SXA
  • DXA

Frage 3

Frage
What is the most common osteoporotic fracture?
Antworten
  • Hip
  • Shoulder
  • Spine
  • Wrist

Frage 4

Frage
In bone densitometry, what is the primary responsibility of the technologist?
Antworten
  • beam collimation
  • distance
  • shielding
  • time

Frage 5

Frage
Which of the following is considered an uncontrollable risk factor for osteoporosis?
Antworten
  • exercise
  • lifestyle choices
  • smoking
  • race

Frage 6

Frage
Which of the following measures more trabecular bone?
Antworten
  • PA spine
  • Lateral spine
  • QCT spine
  • VFA

Frage 7

Frage
Primary osteoporosis Type 1, is related to
Antworten
  • aging
  • disease
  • medication
  • menopause

Frage 8

Frage
Identify the incorrect statement from the following:
Antworten
  • Caucasian and Asians are at an increase risk of developing osteoporosis compared to other ethnic groups
  • most obese patients are at an increase risk of developing osteoporosis
  • women are at an increase risk of developing osteoporosis compared to men because they achieve a lower peak bone mass and go through menopause
  • smoking is a recognized risk factor for the development of osteoporosis

Frage 9

Frage
Cancellous bone is also known as :
Antworten
  • compact bone
  • cortical bone
  • trabecular bone
  • osteophyte

Frage 10

Frage
New bone matrix is formed by:
Antworten
  • osteoblasts
  • osteoclasts
  • cortical bone
  • cancellous bone

Frage 11

Frage
What percentage of trabecular bone is found in the PA spine?
Antworten
  • 1%
  • 33%
  • 50%
  • 66%

Frage 12

Frage
Currently, the most accurate method to determine a patient’s response to therapy form osteoporosis is:
Antworten
  • serial DXA measurements of the forearm
  • serial DXA measurements of the hip and spine
  • serial QUS measurements of the calcareous
  • Serial QCT measurements of the spine

Frage 13

Frage
Which of the following does not help in achieving peak bone mass?
Antworten
  • normal puberty
  • exercise
  • corticosteroid therapy
  • adequate calcium and vitamin D intake

Frage 14

Frage
Which of the following statement is false concerning QUS advantages over x-ray base methodologies for BMD measurements?
Antworten
  • QUS units are comparatively inexpensive
  • the patients heel must be immersed in liquid during the procedure
  • patients are not subjected to ionizing radiation
  • ultrasound examinations are quick to perform

Frage 15

Frage
which of following site is mostly composed of cortical bone
Antworten
  • distal forearm
  • femoral neck
  • proximal forearm
  • vertebral bodies

Frage 16

Frage
What is the anatomical landmark on the proximal femur that indicates the best visual indication of the degree of rotation of the proximal femur?
Antworten
  • femoral head
  • femoral shaft
  • greater trochanter
  • lesser trochanter

Frage 17

Frage
Which lumbar vertebra is described as having a characteristic shape of an X or H on a DXA PA spine scan?
Antworten
  • L1
  • L2
  • L3
  • L4

Frage 18

Frage
What is the name of the radionuclitide used in DPA?
Antworten
  • Americium- 241
  • Gadolinium-153
  • Iodine‘-125
  • Technetium-99

Frage 19

Frage
The forearm is not used to monitor the effects of therapy for osteoporosis because
Antworten
  • accuracy is poor
  • precision is poor
  • there is no effect
  • the rate of change in BMD is to slow

Frage 20

Frage
Which of the following is not a bisphosphonate?
Antworten
  • alendronate
  • etodronate
  • foiteo
  • zoledronic acid

Frage 21

Frage
The primary mechanism of action of anti-resorptive therapies is the result of direct interaction with:
Antworten
  • the bone lining cells
  • the osteoblasts
  • the osteoclasts
  • the osteocytes

Frage 22

Frage
The WHO criteria for diagnosing osteoporosis was initially defined to apply to
Antworten
  • all women
  • all Caucasian women
  • only postmenopausal women
  • only Caucasian postmenopausal women

Frage 23

Frage
The measurement of peripheral BMD is advocated for
Antworten
  • all individuals regardless of age
  • pediatrics
  • screening
  • males

Frage 24

Frage
The PA spine mostly measures the:
Antworten
  • posterior elements
  • vertebral bodies
  • transverse processes
  • pedicle

Frage 25

Frage
Which of the following statement about QCT measurements of bone density of the spine is not True?
Antworten
  • the measurements are volumetric rather than areal measurements of bone density
  • accuracy may be affected by marrow fat
  • results are usually reported in g/cm squared
  • trabecular bone can be isolated from cortical bone

Frage 26

Frage
ln order to do a compare analysis:
Antworten
  • the patient must have a previous scan done on the same mode/speed
  • you must retrieve the baseline scan(s)
  • patient positioning must be consistent
  • all of the above

Frage 27

Frage
How many degrees should you rotate the femur when positioning for a proximal femur scan?
Antworten
  • 10 -15 degrees
  • 15-25 degrees
  • 20-25 degrees
  • 25-30 degrees

Frage 28

Frage
When should Z-scores be used to make a diagnosis, instead of T-scores?
Antworten
  • females 65 and older
  • males 65 and older
  • postmenopausal females
  • males or females under age 20

Frage 29

Frage
Which of the following bone parameters is measured in grams?
Antworten
  • area
  • bone mineral content
  • bone mineral density
  • total

Frage 30

Frage
Which lumbar vertebra has the widest transverse process?
Antworten
  • L1
  • L2
  • L3
  • L4

Frage 31

Frage
The region of the proximal femur lying on the border of the femoral neck is termed:
Antworten
  • lesser trochanter
  • femoral head
  • hip axis length
  • ward's area

Frage 32

Frage
What is important for serial monitoring?
Antworten
  • accuracy
  • precision

Frage 33

Frage
If the daily QC fails, (in the United States) what should be your first step of action?
Antworten
  • repeat the scan
  • call the manufacturer
  • get yourself another cup of coffee
  • go home!

Frage 34

Frage
With changes in rotation of the femoral neck what happens?
Antworten
  • decrease in the BMC
  • decrease in the BMD
  • increase in the BMD
  • increase ROI

Frage 35

Frage
Which of the following would best describe low bone mass due to menopause?
Antworten
  • primary osteoporosis/Type 1
  • primary osteoporosis/Type 11
  • secondary osteoporosis

Frage 36

Frage
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?
Antworten
  • normal
  • osteopenia
  • osteoporosis
  • none of the above

Frage 37

Frage
Which of the following term best describes the sum of data values divided by the number of values?
Antworten
  • the mean
  • the standard deviation
  • the variance
  • the coefficient

Frage 38

Frage
How many decimal places to the right of the decimal point is used in reporting the T-scores?
Antworten
  • 0
  • 1
  • 2
  • 3

Frage 39

Frage
At low energies the majority of x-ray interactions are:
Antworten
  • Compton scattering
  • photoelectric
  • photodisintegration
  • pair production

Frage 40

Frage
What concept should always guide radiation protection effects?
Antworten
  • time
  • distance
  • shielding
  • ALARA

Frage 41

Frage
If a patient has a history of hyper-parathyroidism, which of the following would be the preferred site to evaluate ?
Antworten
  • proximal femur
  • spine
  • ultradistal
  • 33% or 1/3 forearm

Frage 42

Frage
Which of the following classes of cells are involved in bone remodeling?
Antworten
  • osteoblasts
  • osteoclasts
  • osteocytes
  • a and b
  • all of the above

Frage 43

Frage
Which of the following has the highest percentage of cortical bone?
Antworten
  • femoral neck
  • fingers
  • whole body
  • 33% radius

Frage 44

Frage
Which of the following bone parameters is measured in grams per centimeter squared?
Antworten
  • area
  • BMC
  • BMD
  • BMMA

Frage 45

Frage
What is the percentage of trabecular bone in the skeleton?
Antworten
  • 20%
  • 30%
  • 70%
  • 80%

Frage 46

Frage
How would start labeling the vertebral bodies on a PA lumbar scan?
Antworten
  • Let the software do it all!
  • start at L1, and count/label down
  • start at L4, and count/label up

Frage 47

Frage
What is the major source of precision error in clinical practice?
Antworten
  • equipment
  • physician
  • technologist
  • receptionist

Frage 48

Frage
Which of the following is correct?
Antworten
  • BMD=BMC/Area
  • BMD=BMCxArea

Frage 49

Frage
During analyzes of the lumbar spine, what would help you identify the vertebral bodies?
Antworten
  • read the manual
  • look for L3 ( longest transverse process)
  • their characteristic shapes
  • all of the above

Frage 50

Frage
A great forearm scan should include all of the following except:
Antworten
  • forearm centered
  • forearm straight
  • free of artifacts
  • motion

Frage 51

Frage
Sunlight is the main source of vitamin:
Antworten
  • A
  • C
  • D
  • K

Frage 52

Frage
Bisphosphonates prevent bone loss by:
Antworten
  • reducing the activity of the osteoclasts
  • increasing the activity of the osteoblasts
  • increasing the activity of the osteoclasts

Frage 53

Frage
DXA results may be influenced by:
Antworten
  • body thickness
  • degenerative changes
  • fractures
  • scan mode
  • all of the above

Frage 54

Frage
Which of the following would best describe the effective dose for a central DXA scan?
Antworten
  • one-tenth of a chest x-ray
  • less than a day of background radiation
  • less than a round trip from Boston to LA
  • all of the above

Frage 55

Frage
When measuring the proximal femur, which of the following statements is true?
Antworten
  • the neck ROI includes any portion of the greater trochanter
  • the neck ROI is perpendicular to the femoral neck
  • the neck ROI includes both ends in bone
  • I need to read the manual!!

Frage 56

Frage
Which of the following statements is true regarding DXA?
Antworten
  • DXA has been widely studied and requires a radioactive source
  • DXA is faster than DPA but is not as precise
  • DXA can only predict fracture risk of the hip and spine
  • DXA can be used to predict fracture risk and to evaluate the effectiveness of treatment

Frage 57

Frage
How often should you perform the QA on the DXA unit?
Antworten
  • once a week
  • once a year
  • every day you scan
  • only when you get a message on your monitor

Frage 58

Frage
Why is the non-dominant arm used in bone densitometry?
Antworten
  • easier for the patient
  • easier for the technologist
  • its density values will be greater than that of the dominant arm
  • reference values reflect non-dominant arm measurements

Frage 59

Frage
If a patients BMC is 60.58 and the area is 61.60 what is her BMD?
Antworten
  • 0.983
  • 1.01

Frage 60

Frage
All of the following are true, except:
Antworten
  • accuracy is the ability to measure true value
  • accuracy is most important for diagnosis, less important for serial monitoring
  • accuracy is affected by the technologist
  • accuracy is affected by the technology

Frage 61

Frage
What is the distance a technologist should be away from the edge of the DXA table with a pencil beam scanner?
Antworten
  • 2 feet
  • 3 feet
  • 4 feet
  • 10 feet

Frage 62

Frage
What is the most common osteoporotic fracture?
Antworten
  • heel
  • hip
  • spine
  • wrist

Frage 63

Frage
Two bones with the same volumetric densities may have different densities when measured with DXA because:
Antworten
  • poor precision
  • poor accuracy
  • differ in size
  • degenerative changes

Frage 64

Frage
Regarding the Shewart Rules, the control limits are based on what percentage of the average values?
Antworten
  • 0.5%
  • 1%
  • 1.5%
  • 2%

Frage 65

Frage
All follow-up DXA scans should be compared to:
Antworten
  • any prior scan
  • the most recent scan
  • the baseline scan
  • Operator’s choice!

Frage 66

Frage
With DXA, regarding the PA spine, which vertebra is expected to have the lowest bone mineral density?
Antworten
  • L1
  • L2
  • L3
  • L4

Frage 67

Frage
A DXA scanner that uses a single detector and a pinhole collimator is:
Antworten
  • a fan beam scanner
  • a pencil beam scanner
  • an aerial beam scanner

Frage 68

Frage
The characteristic shapes of the vertebrae seen on the spine DXA image are primarily based on the appearance of the:
Antworten
  • transverse processes
  • vertebral bodies
  • posterior elements of the vertebra
  • intervertebral discs

Frage 69

Frage
When scanning the proximal femur, what is the anatomical landmark to look at if you have correct rotation?
Antworten
  • the femoral head
  • the greater trochanter
  • the lesser trochanter
  • the ischium

Frage 70

Frage
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?
Antworten
  • 2.77
  • 1.96
  • 1.81
  • 1.28

Frage 71

Frage
A technologist should perform a precision study in order to:
Antworten
  • quantify the shifts and drifts(QA)
  • calculate the LSC
  • To see how great you are!
  • To see how great your doc is doing!

Frage 72

Frage
How many places to the right of the decimal point is used in reporting BMD?
Antworten
  • 0
  • 1
  • 2
  • 3

Frage 73

Frage
The name of the forearm sites is based on what?
Antworten
  • the location of the site on the bone in relationship to the overall length of the radius
  • the location of the site on the bone in relationship to the overall length of the ulna
  • % of cortical bone found at that site
  • % of trabecular bone found at that site

Frage 74

Frage
What skeletal site may be preferred for assessing early menopause or following oophorectomy?
Antworten
  • Calcaneus
  • Forearm
  • Hip
  • spine

Frage 75

Frage
When analyzing the PA spine, which of the following is a "no can do?
Antworten
  • Spine straight and centered within the ROI
  • The top line of the ROI positioned between T12 and L1
  • The bottom of the line of the ROI positioned between L4 and L5
  • Width is operator’s choice

Frage 76

Frage
If you are very fortunate, and you get a new DXA unit, what must be performed in order to do compare studies?
Antworten
  • establish QC program
  • cross-calibration

Frage 77

Frage
All of the following are examples of weight-bearing exercise except:
Antworten
  • running
  • dancing
  • racket sports
  • lap swimming

Frage 78

Frage
What type of bone with long term use of steroids affect?
Antworten
  • trabecular
  • cancellous
  • Cortical
  • Compact
  • a and b
  • b and c
  • c and d

Frage 79

Frage
If a patient has had an Iaminectomy, how would that affect the results?
Antworten
  • increase BMD
  • decrease BMD
  • nothing at all

Frage 80

Frage
What are the two most common methods for shifting the energies in DXA units?
Antworten
  • energy switching
  • K-edge filtration
  • Compton effect
  • photoelectric effect

Frage 81

Frage
Why do you use a leg block, when performing a PA spine DXA scan? Select all that appy.
Antworten
  • reduce Iordotic curve
  • separate the verebrae
  • may feel good to the patient
  • Operator’s manual said so!

Frage 82

Frage
What is the term often used to express the precision of the DXA unit?
Antworten
  • mean
  • standard deviation
  • linear regression

Frage 83

Frage
Why do you use a “hip positioner", during scanning of the proximal femur?
Antworten
  • to place the femoral neck parallel to the tabletop
  • to place the ward's area in the correct location
  • to obtain the total hip results
  • because you have it!

Frage 84

Frage
lf a patients is found to have coins in their pocket while obtaining the proximal femur what should you do.
Antworten
  • scan the other hip
  • scan the forearm
  • remove the coins and rescan the hip
  • remove the coins and keep them!

Frage 85

Frage
A patient with an elevated alkaline phosphatase may be an indicator of
Antworten
  • osteoporosis
  • osteomalacia
  • osteopetrosis
  • Pagets

Frage 86

Frage
What is the percentage of cortical bone (compact bone) in the skeleton?
Antworten
  • 20%
  • 30%
  • 70%
  • 80%

Frage 87

Frage
What angle should the patient's leg be positioned on the leg block for the PA spine?
Antworten
  • 30-60 degrees
  • 40-60 degrees
  • 60-80 degrees
  • 60-90 degrees

Frage 88

Frage
What year was the Bone Mass Measurement Act proposed?
Antworten
  • 1991
  • 1993
  • 1997
  • 1998

Frage 89

Frage
What pharmaceutical may be suggested for a woman with high risk of breast cancer and elevated lipids?
Antworten
  • Actonel
  • Evista
  • Fosamax
  • Prolia

Frage 90

Frage
In bone densitometry, what describes the ability to reproduce the measurement when it is performed under identical conditions?
Antworten
  • absolute risk
  • accuracy
  • precision
  • relative risk

Frage 91

Frage
Decide which of the following is the most important factor to consider when performing a DXA scan?
Antworten
  • make sure pt is comfortable
  • make sure patient removes items that may attenuate the beam
  • make sure patient is NPO
  • make sure that you have the correct patient!

Frage 92

Frage
How can a patient be deprived of vitamin D?
Antworten
  • reduction in dietary intake
  • malabsorption of fats
  • not exposed to sunlight
  • all of the above

Frage 93

Frage
Which of the following calcium supplements should be the choice for women who are at risk of kidney stone formation?
Antworten
  • calcium carbonate
  • calcium citrate
  • calcium gluconate
  • calcium lactate

Frage 94

Frage
The correct way to measure radiation dose is as effective dose, expressed as:
Antworten
  • uGy
  • uSv
  • uCi
  • rad

Frage 95

Frage
All of the following are risk factors for 733 except:
Antworten
  • smoking
  • drinking 48 ounces of coffee a day
  • alcohol use
  • obesity

Frage 96

Frage
QUS what is the gold standard to measure bone density?
Antworten
  • DPA
  • DXA
  • QCT
  • QUS

Frage 97

Frage
Cortical bone makes up what?
Antworten
  • the inner core of the bones
  • the outer core of the bones

Frage 98

Frage
All of the following are correct except:
Antworten
  • osteoporosis is usually asymptomatic
  • back pain and height loss may be the first signs of osteoporosis
  • kyphosis is common in patients with osteoporosis
  • African Americans are at higher risk to develop osteoporotic in comparison to Asians

Frage 99

Frage
What are the four classifications that apply to the heel?
Antworten
  • appendicular, predominately trabecular and weight-bearing
  • axial, peripheral, predominantly cortical and non weight-bearing

Frage 100

Frage
Secondary osteoporosis is defined as:
Antworten
  • bone loss caused by factors other than estrogen deficiency
  • bone loss caused by factors other than aging
  • bone loss caused by factors other than estrogen deficiency and aging
  • none of the above

Frage 101

Frage
The forearm, pelvis, and scapula all belong to which skeletal classification?
Antworten
  • appendicular
  • axial
  • central
  • weight-bearing
  • a and b

Frage 102

Frage
When there is an imbalance/uncoupling of the remodeling cycle, the result is
Antworten
  • an increase in the calcium
  • a decrease in the resorption
  • a net gain in the bone mass
  • a net loss in the bone mass

Frage 103

Frage
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?
Antworten
  • use a higher speed setting
  • use a slower speed setting
  • can another site
  • get the next patient!

Frage 104

Frage
What is the bone edge detection methodology?
Antworten
  • it tests the machine's ability to measure BMD
  • it tests the machine's ability to distinguish bone from soft tissue
  • it verifies the machine is calibrated correctly

Frage 105

Frage
What sites are preferred for children?
Antworten
  • Iumbar spine and hip(s)
  • lumbar spine, hip, and forearm
  • lumbar spine and TBLH
  • lumbar spine only

Frage 106

Frage
In making a diagnosis for children, what are some guidelines? Select all that apply.
Antworten
  • Z--scores are used
  • low for age is preferred over the term osteopenia
  • pediatric software is highly recommended
  • osteoporosis can be made with a Z-score of -2.5 SD

Frage 107

Frage
What is the only anabolic pharmaceutical on the market for treatment of osteoporosis?
Antworten
  • calcitonin
  • zoledronic acid
  • aloxifene
  • teriparatide

Frage 108

Frage
Although the technology is similar with all the DXA units, the BMD results are different because...select all that apply.
Antworten
  • due to different calibration standards
  • algorithms to calculate BMD
  • differences in the region of interest
  • databases
  • All of the above

Frage 109

Frage
For low energies, the most common process of absorption is the:
Antworten
  • Compton effect
  • pair production
  • photoelectric effect
  • photodisintegration

Frage 110

Frage
How many patients and how many times do you scan them in order to perform a precision study? Select all that apply.
Antworten
  • 10 patients 3 times
  • 15 patients 3 times
  • 20 patients 2 times
  • 30 patients 2 times

Frage 111

Frage
Phantoms that mimic the shape and size of a skeletal region are called:
Antworten
  • block phantom
  • brass phantom
  • anthromomorphic phantom
  • hydroxyaptite

Frage 112

Frage
If the QC graph shows a gradual decline in BMD overtime, what should you do?
Antworten
  • repeat the QC
  • Re-establish a baseline value
  • call the manufacturer for service
  • upgrade your unit

Frage 113

Frage
Regarding bone densitometry, which of the following best describes accuracy?
Antworten
  • the degree to which the measurement of BD reflects true value
  • the degree to which the QC reflects true value
  • the degree to which the %CV reflects true value

Frage 114

Frage
Which of the following are clinical signs and consequences of vertebral fractures? Select all that apply.
Antworten
  • kyphosis
  • weight loss
  • reduced lung function
  • increase in height

Frage 115

Frage
All of the following are markers of bone formation, except?
Antworten
  • 24-hour excretion rate of calcium
  • serum alkaline phosphatase
  • serum osteocalcin

Frage 116

Frage
Pencil beam DXA units usually have shorter scanning times and better resolution compared to fan beam units.
Antworten
  • True
  • False

Frage 117

Frage
Quantitative ultrasonometry measures the broad band attenuation properties of bone.
Antworten
  • True
  • False

Frage 118

Frage
The correct term for the scanning pattern of a pencil beam unit is rectilinear.
Antworten
  • True
  • False

Frage 119

Frage
Archiving patient’s scans and running the system back-up are one in the same.
Antworten
  • True
  • False

Frage 120

Frage
The weight Iimit for the DXA table is manufacturer specific?
Antworten
  • True
  • False

Frage 121

Frage
When analyzing the proximal femur the box measuring the neck should include the greater trochanter.
Antworten
  • True
  • False

Frage 122

Frage
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.
Antworten
  • True
  • False

Frage 123

Frage
Cortical bone is also known as cancellous bone.
Antworten
  • True
  • False

Frage 124

Frage
With fan beam scanners, scanning occurs point by point.
Antworten
  • True
  • False

Frage 125

Frage
Discordance is a term that is rarely used in DXA.
Antworten
  • True
  • False

Frage 126

Frage
The smaller the %CV, the better the accuracy and precision.
Antworten
  • True
  • False

Frage 127

Frage
Rheumatoid arthritis can contribute to the development of osteoporosis.
Antworten
  • True
  • False

Frage 128

Frage
Bone loss occurs when resorption exceeds formation.
Antworten
  • True
  • False

Frage 129

Frage
T-scores are useful for the expression of relative risk.
Antworten
  • True
  • False

Frage 130

Frage
T-scores should be used in serial monitoring.
Antworten
  • True
  • False

Frage 131

Frage
Sievert refers to effective dose.
Antworten
  • True
  • False

Frage 132

Frage
The measure of the variability or the spread of data around the mean is termed standard deviation.
Antworten
  • True
  • False

Frage 133

Frage
Accuracy is most important for diagnosis, less important for serial monitoring.
Antworten
  • True
  • False

Frage 134

Frage
The ultra distal part of the forearm is mostly trabecular bone.
Antworten
  • True
  • False

Frage 135

Frage
With VFA, you are measuring the BMD L4 through T4.
Antworten
  • True
  • False

Frage 136

Frage
Cortical bone is primarily affected with an estrogen deficient woman.
Antworten
  • True
  • False

Frage 137

Frage
Precision is the ability to reproduce a measurement when performed under identical conditions.
Antworten
  • True
  • False

Frage 138

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

Frage 139

Frage
The Tanner and Whitehouse (TW2) method is often used to indicate bone age in children.
Antworten
  • True
  • False

Frage 140

Frage
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.
Antworten
  • True
  • False

Frage 141

Frage
Caucasians and Asians are at increased risk to developing osteoporosis compared to otherethnic groups.
Antworten
  • True
  • False

Frage 142

Frage
Smoking is not recognized as a risk factor for the development of osteoporosis.
Antworten
  • True
  • False

Frage 143

Frage
With fan beam scanners a solid state/multi element array detector system is used.
Antworten
  • True
  • False

Frage 144

Frage
DXA BMD measures the amount of mineralized tissue in the area scanned. (g/cm3)
Antworten
  • True
  • False

Frage 145

Frage
Accuracy indicates how close a measured value is to the actual value.
Antworten
  • True
  • False
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