Question 1

The FRAX® algorithm gives the ____-year probability of fracture.

Accepted Answer

A)  5 
B)  10 
C)  15 
D)  20 
A)  5 
B)  10 
C)  15 
D)  20 B

Question 2

Each operator should do a precision assessment after he or she has performed how many scans?

Accepted Answer

A)  50 
B)  100 
C)  150 
D)  200 
A)  50 
B)  100 
C)  150 
D)  200 B

Question 3

Which prime factor of x-ray production controls the quantity or intensity property?

Accepted Answer

A)  mA 
B)  S 
C)  kVp 
D)  Filtration 
A)  mA 
B)  S 
C)  kVp 
D)  Filtration A

Question 4

When scanning a lumbar spine,what is one of the external landmarks used for placement of the central ray?

Accepted Answer

A)  2 cm below the greater trochanter 
B)  2 cm below the iliac crest 
C)  2 cm above the xiphoid process 
D)  2 cm below the xiphoid process 
A)  2 cm below the greater trochanter 
B)  2 cm below the iliac crest 
C)  2 cm above the xiphoid process 
D)  2 cm below the xiphoid process

Question 5

Scanner quality control to detect shift or drift is accomplished by imaging what object?

Accepted Answer

A)  Phantom 
B)  Filter 
C)  Grid 
D)  Patient 
A)  Phantom 
B)  Filter 
C)  Grid 
D)  Patient

Question 6

Primary type I osteoporosis is classified as:

Accepted Answer

A)  premenopausal. 
B)  postmenopausal. 
C)  senile. 
D)  rheumatoid. 
A)  premenopausal. 
B)  postmenopausal. 
C)  senile. 
D)  rheumatoid.

Question 7

Which BMD measurement score indicates the number of SDs from the average BMD for the patient's respective age and sex group?

Accepted Answer

A)  T-score 
B)  W-score 
C)  V-score 
D)  Z-score 
A)  T-score 
B)  W-score 
C)  V-score 
D)  Z-score

Question 8

Which of the following body parts are scanned when a central DXA is performed?

Accepted Answer

A)  Lumbar spine and proximal femur 
B)  Knee and lumbar spine 
C)  Proximal femur and forearm 
D)  Forearm and lumbar spine 
A)  Lumbar spine and proximal femur 
B)  Knee and lumbar spine 
C)  Proximal femur and forearm 
D)  Forearm and lumbar spine

Question 9

Which of the following cells are responsible for building bone?

Accepted Answer

A)  Osteotytes 
B)  Osteolytes 
C)  Osteoclasts 
D)  Osteoblasts 
A)  Osteotytes 
B)  Osteolytes 
C)  Osteoclasts 
D)  Osteoblasts

Question 10

What is one advantage of vertebral fracture assessment over conventional x-ray?

Accepted Answer

A)  Less radiation to patient 
B)  Faster scan time to patient 
C)  More comfortable for patient 
D)  More convenient for patient 
A)  Less radiation to patient 
B)  Faster scan time to patient 
C)  More comfortable for patient 
D)  More convenient for patient

Question 11

Optimal forearm scan acquisition includes:

Accepted Answer

A)  one row of carpal bones. 
B)  one row of metacarpal bones. 
C)  distal tibia. 
D)  distal fibula. 
A)  one row of carpal bones. 
B)  one row of metacarpal bones. 
C)  distal tibia. 
D)  distal fibula.

Question 12

When positioning a proximal femur,the patient's feet should always be:

Accepted Answer

A)  straight. 
B)  pointed inward. 
C)  pointed outward. 
D)  oblique. 
A)  straight. 
B)  pointed inward. 
C)  pointed outward. 
D)  oblique.

Question 13

Which of the following external landmarks are used for placement of the central ray of the proximal femur?

Accepted Answer

A)  7 to 8 cm below xiphoid process 
B)  7 to 8 cm below greater trochanter 
C)  7 to 8 cm above xiphoid process 
D)  7 to 8 cm above greater trochanter 
A)  7 to 8 cm below xiphoid process 
B)  7 to 8 cm below greater trochanter 
C)  7 to 8 cm above xiphoid process 
D)  7 to 8 cm above greater trochanter

Question 14

What does the radiation protection principle ALARA stand for?

Accepted Answer

A)  As long as reasonably allowed 
B)  As long as realistically achievable 
C)  As low as reasonably achievable 
D)  As low as realistically allowed 
A)  As long as reasonably allowed 
B)  As long as realistically achievable 
C)  As low as reasonably achievable 
D)  As low as realistically allowed

Question 15

What are the two basic types of bone?

Accepted Answer

A)  Cortical and trabecular 
B)  Cortical and compact 
C)  Trabecular and cancellous 
D)  Trabecular and os calcis 
A)  Cortical and trabecular 
B)  Cortical and compact 
C)  Trabecular and cancellous 
D)  Trabecular and os calcis

Question 16

When,during the day,should daily scanner QC be performed on a normally functioning scanner?

Accepted Answer

A)  Before the first patient 
B)  Between each patient 
C)  Between every fifth patient 
D)  After the last patient only 
A)  Before the first patient 
B)  Between each patient 
C)  Between every fifth patient 
D)  After the last patient only

Question 17

Which BMD measurement score indicates the number of SDs from the average BMD of young,normal,sex-matched individuals with peak bone mass?

Accepted Answer

A)  T-score 
B)  W-score 
C)  V-score 
D)  Z-score 
A)  T-score 
B)  W-score 
C)  V-score 
D)  Z-score

Question 18

DXA bone densitometry requires how many photon energy levels?

Accepted Answer

A)  One 
B)  Two 
C)  Three 
D)  Four 
A)  One 
B)  Two 
C)  Three 
D)  Four

Question 19

Which prime factor of x-ray production controls the quality or penetrating property?

Accepted Answer

A)  mA 
B)  mAs 
C)  S 
D)  kVP 
A)  mA 
B)  mAs 
C)  S 
D)  kVP

Question 20

What are the regions of interest for a lumbar spine DXA scan?

Accepted Answer

A)  T12 through L3 
B)  L1 through L4 
C)  L1 through L5 
D)  L2 through L5 
A)  T12 through L3 
B)  L1 through L4 
C)  L1 through L5 
D)  L2 through L5

Exam 26: Bone Densitometry

The FRAX® algorithm gives the ____-year probability of fracture.

Each operator should do a precision assessment after he or she has performed how many scans?

Which prime factor of x-ray production controls the quantity or intensity property?

When scanning a lumbar spine,what is one of the external landmarks used for placement of the central ray?

Scanner quality control to detect shift or drift is accomplished by imaging what object?

Primary type I osteoporosis is classified as:

Which BMD measurement score indicates the number of SDs from the average BMD for the patient's respective age and sex group?

Which of the following body parts are scanned when a central DXA is performed?

Which of the following cells are responsible for building bone?

What is one advantage of vertebral fracture assessment over conventional x-ray?

Optimal forearm scan acquisition includes:

When positioning a proximal femur,the patient's feet should always be:

Which of the following external landmarks are used for placement of the central ray of the proximal femur?

What does the radiation protection principle ALARA stand for?

What are the two basic types of bone?

When,during the day,should daily scanner QC be performed on a normally functioning scanner?

Which BMD measurement score indicates the number of SDs from the average BMD of young,normal,sex-matched individuals with peak bone mass?

DXA bone densitometry requires how many photon energy levels?

Which prime factor of x-ray production controls the quality or penetrating property?

What are the regions of interest for a lumbar spine DXA scan?

Role of the Limited X-Ray Machine Operator

Introduction to Radiographic Equipment

Basic Mathematics for Limited Operators

Basic Physics of Radiography

X-Ray Production

X-Ray Circuit and Tube Heat Management

Principles of Exposure and Image Quality

Digital Image Receptor Systems

Scatter Radiation and Its Control

Formulating X-Ray Techniques

Radiobiology and Radiation Safety

Introduction to Anatomy, positioning, and Pathology

Upper Extremity and Shoulder Girdle

Lower Extremity and Pelvis

Spine

Bony Thorax, Chest, and Abdomen

Skull, Facial Bones, and Paranasal Sinuses

Radiography of Pediatric and Geriatric Patients

Image Evaluation

Ethics, Legal Considerations, and Professionalism

Safety and Infection Control

Assessing Patients and Managing Acute Situations

Medications and Their Administration

Medical Laboratory Skills

Additional Procedures for Assessment and Diagnosis

Filters