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dexa 2

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dexa 2
John Appleseed9305
Quiz por John Appleseed9305, atualizado more than 1 year ago
John Appleseed9305
Criado por John Appleseed9305 quase 9 anos atrás
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Questão 1

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

Questão 2

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

Questão 3

Questão
What is the most common osteoporotic fracture?
Responda
  • Hip
  • Shoulder
  • Spine
  • Wrist

Questão 4

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

Questão 5

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

Questão 6

Questão
Which of the following measures more trabecular bone?
Responda
  • PA spine
  • Lateral spine
  • QCT spine
  • VFA

Questão 7

Questão
Primary osteoporosis Type 1, is related to
Responda
  • aging
  • disease
  • medication
  • menopause

Questão 8

Questão
Identify the incorrect statement from the following:
Responda
  • 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

Questão 9

Questão
Cancellous bone is also known as :
Responda
  • compact bone
  • cortical bone
  • trabecular bone
  • osteophyte

Questão 10

Questão
New bone matrix is formed by:
Responda
  • osteoblasts
  • osteoclasts
  • cortical bone
  • cancellous bone

Questão 11

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

Questão 12

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

Questão 13

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

Questão 14

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

Questão 15

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

Questão 16

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

Questão 17

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

Questão 18

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

Questão 19

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

Questão 20

Questão
Which of the following is not a bisphosphonate?
Responda
  • alendronate
  • etodronate
  • foiteo
  • zoledronic acid

Questão 21

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

Questão 22

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

Questão 23

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

Questão 24

Questão
The PA spine mostly measures the:
Responda
  • posterior elements
  • vertebral bodies
  • transverse processes
  • pedicle

Questão 25

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

Questão 26

Questão
ln order to do a compare analysis:
Responda
  • 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

Questão 27

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

Questão 28

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

Questão 29

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

Questão 30

Questão
Which lumbar vertebra has the widest transverse process?
Responda
  • L1
  • L2
  • L3
  • L4

Questão 31

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

Questão 32

Questão
What is important for serial monitoring?
Responda
  • accuracy
  • precision

Questão 33

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

Questão 34

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

Questão 35

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

Questão 36

Questão
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?
Responda
  • normal
  • osteopenia
  • osteoporosis
  • none of the above

Questão 37

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

Questão 38

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

Questão 39

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

Questão 40

Questão
What concept should always guide radiation protection effects?
Responda
  • time
  • distance
  • shielding
  • ALARA

Questão 41

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

Questão 42

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

Questão 43

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

Questão 44

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

Questão 45

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

Questão 46

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

Questão 47

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

Questão 48

Questão
Which of the following is correct?
Responda
  • BMD=BMC/Area
  • BMD=BMCxArea

Questão 49

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

Questão 50

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

Questão 51

Questão
Sunlight is the main source of vitamin:
Responda
  • A
  • C
  • D
  • K

Questão 52

Questão
Bisphosphonates prevent bone loss by:
Responda
  • reducing the activity of the osteoclasts
  • increasing the activity of the osteoblasts
  • increasing the activity of the osteoclasts

Questão 53

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

Questão 54

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

Questão 55

Questão
When measuring the proximal femur, which of the following statements is true?
Responda
  • 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!!

Questão 56

Questão
Which of the following statements is true regarding DXA?
Responda
  • 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

Questão 57

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

Questão 58

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

Questão 59

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

Questão 60

Questão
All of the following are true, except:
Responda
  • 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

Questão 61

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

Questão 62

Questão
What is the most common osteoporotic fracture?
Responda
  • heel
  • hip
  • spine
  • wrist

Questão 63

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

Questão 64

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

Questão 65

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

Questão 66

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

Questão 67

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

Questão 68

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

Questão 69

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

Questão 70

Questão
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?
Responda
  • 2.77
  • 1.96
  • 1.81
  • 1.28

Questão 71

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

Questão 72

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

Questão 73

Questão
The name of the forearm sites is based on what?
Responda
  • 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

Questão 74

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

Questão 75

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

Questão 76

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

Questão 77

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

Questão 78

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

Questão 79

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

Questão 80

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

Questão 81

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

Questão 82

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

Questão 83

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

Questão 84

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

Questão 85

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

Questão 86

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

Questão 87

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

Questão 88

Questão
What year was the Bone Mass Measurement Act proposed?
Responda
  • 1991
  • 1993
  • 1997
  • 1998

Questão 89

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

Questão 90

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

Questão 91

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

Questão 92

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

Questão 93

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

Questão 94

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

Questão 95

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

Questão 96

Questão
QUS what is the gold standard to measure bone density?
Responda
  • DPA
  • DXA
  • QCT
  • QUS

Questão 97

Questão
Cortical bone makes up what?
Responda
  • the inner core of the bones
  • the outer core of the bones

Questão 98

Questão
All of the following are correct except:
Responda
  • 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

Questão 99

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

Questão 100

Questão
Secondary osteoporosis is defined as:
Responda
  • 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

Questão 101

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

Questão 102

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

Questão 103

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

Questão 104

Questão
What is the bone edge detection methodology?
Responda
  • 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

Questão 105

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

Questão 106

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

Questão 107

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

Questão 108

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

Questão 109

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

Questão 110

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

Questão 111

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

Questão 112

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

Questão 113

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

Questão 114

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

Questão 115

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

Questão 116

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

Questão 117

Questão
Quantitative ultrasonometry measures the broad band attenuation properties of bone.
Responda
  • True
  • False

Questão 118

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

Questão 119

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

Questão 120

Questão
The weight Iimit for the DXA table is manufacturer specific?
Responda
  • True
  • False

Questão 121

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

Questão 122

Questão
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.
Responda
  • True
  • False

Questão 123

Questão
Cortical bone is also known as cancellous bone.
Responda
  • True
  • False

Questão 124

Questão
With fan beam scanners, scanning occurs point by point.
Responda
  • True
  • False

Questão 125

Questão
Discordance is a term that is rarely used in DXA.
Responda
  • True
  • False

Questão 126

Questão
The smaller the %CV, the better the accuracy and precision.
Responda
  • True
  • False

Questão 127

Questão
Rheumatoid arthritis can contribute to the development of osteoporosis.
Responda
  • True
  • False

Questão 128

Questão
Bone loss occurs when resorption exceeds formation.
Responda
  • True
  • False

Questão 129

Questão
T-scores are useful for the expression of relative risk.
Responda
  • True
  • False

Questão 130

Questão
T-scores should be used in serial monitoring.
Responda
  • True
  • False

Questão 131

Questão
Sievert refers to effective dose.
Responda
  • True
  • False

Questão 132

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

Questão 133

Questão
Accuracy is most important for diagnosis, less important for serial monitoring.
Responda
  • True
  • False

Questão 134

Questão
The ultra distal part of the forearm is mostly trabecular bone.
Responda
  • True
  • False

Questão 135

Questão
With VFA, you are measuring the BMD L4 through T4.
Responda
  • True
  • False

Questão 136

Questão
Cortical bone is primarily affected with an estrogen deficient woman.
Responda
  • True
  • False

Questão 137

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

Questão 138

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

Questão 139

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

Questão 140

Questão
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.
Responda
  • True
  • False

Questão 141

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

Questão 142

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

Questão 143

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

Questão 144

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

Questão 145

Questão
Accuracy indicates how close a measured value is to the actual value.
Responda
  • True
  • False

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