Question 1

Short-term effects of radiation would occur within how long?

Accepted Answer

A)  3 months 
B)  1 year 
C)  10 to 15 years 
D)  5 to 30 years 
A)  3 months 
B)  1 year 
C)  10 to 15 years 
D)  5 to 30 years A

Question 2

Radiation exposure to the gonads can cause changes in the genes of the irradiated person called:

Accepted Answer

A)  mitotic rate. 
B)  mutations. 
C)  short-term effects. 
D)  long-term effects. 
A)  mitotic rate. 
B)  mutations. 
C)  short-term effects. 
D)  long-term effects. B

Question 3

The greatest risk for a pregnant women who receives a high exposure is during the:

Accepted Answer

A)  first trimester. 
B)  second trimester. 
C)  third trimester. 
D)  first 3 weeks. 
A)  first trimester. 
B)  second trimester. 
C)  third trimester. 
D)  first 3 weeks. A

Question 4

Which of the following cells would not be as vulnerable to x-rays?

Accepted Answer

A)  Thyroid cells 
B)  Skin cells 
C)  Nerve cells 
D)  Blood cells 
A)  Thyroid cells 
B)  Skin cells 
C)  Nerve cells 
D)  Blood cells

Question 5

The federal regulation for the lead-equivalency of gloves worn during radiographic procedures is _____ mm.

Accepted Answer

A)  0.10 
B)  0.25 
C)  0.50 
D)  1.0 
A)  0.10 
B)  0.25 
C)  0.50 
D)  1.0

Question 6

At what whole-body equivalent dose will death occur?

Accepted Answer

A)  1.5 Sv 
B)  2.0 Sv 
C)  3.0 Sv 
D)  6.0 Sv 
A)  1.5 Sv 
B)  2.0 Sv 
C)  3.0 Sv 
D)  6.0 Sv

Question 7

A declared pregnant radiation worker should wear a second personnel monitor. This monitor should be positioned at the:

Accepted Answer

A)  collar. 
B)  waist level. 
C)  sleeve closest to the radiation. 
D)  the sleeve farthest from the radiation. 
A)  collar. 
B)  waist level. 
C)  sleeve closest to the radiation. 
D)  the sleeve farthest from the radiation.

Question 8

Which of the following effects of radiation exposure are predictable?

Accepted Answer

A)  Short-term 
B)  Long-term 
C)  Somatic 
D)  Genetic 
A)  Short-term 
B)  Long-term 
C)  Somatic 
D)  Genetic

Question 9

Today,the average American is exposed to how much of an annual radiation dose?

Accepted Answer

A)  3.6 mSv 
B)  5.0 mSv 
C)  6.3 mSv 
D)  7.0 mSv 
A)  3.6 mSv 
B)  5.0 mSv 
C)  6.3 mSv 
D)  7.0 mSv

Question 10

The SI unit for measuring absorbed dose is the:

Accepted Answer

A)  air kerma (Gy-a). 
B)  sievert (Sv). 
C)  gray (Gy-a). 
D)  roentgen (R). 
A)  air kerma (Gy-a). 
B)  sievert (Sv). 
C)  gray (Gy-a). 
D)  roentgen (R).

Question 11

Which of the following radiation values will always be an equal dose in diagnostic radiology?

Accepted Answer

A)  Absorbed dose and exposure 
B)  Absorbed dose and equivalent dose 
C)  Absorbed dose and effective dose 
D)  Absorbed dose and cumulative effective dose 
A)  Absorbed dose and exposure 
B)  Absorbed dose and equivalent dose 
C)  Absorbed dose and effective dose 
D)  Absorbed dose and cumulative effective dose

Question 12

Which of the following can the limited operator do to keep radiation exposure to patients as low as reasonably achievable?
1) Use a small radiation field.
2) Use the highest kVp possible.
3) Never use an SID below 40-in.

Accepted Answer

A)  1 and 2 
B)  1 and 3 
C)  2 and 3 
D)  1, 2, and 3 
A)  1 and 2 
B)  1 and 3 
C)  2 and 3 
D)  1, 2, and 3

Question 13

In general,which radiation effect are we most concerned about?

Accepted Answer

A)  Short-term 
B)  Long-term 
C)  Somatic 
D)  Genetic 
A)  Short-term 
B)  Long-term 
C)  Somatic 
D)  Genetic

Question 14

A gonad shield should be used whenever the edge of the radiation field is within ________ cm of the gonads.

Accepted Answer

A)  3 
B)  5 
C)  6 
D)  8 
A)  3 
B)  5 
C)  6 
D)  8

Question 15

According to the Law of Bergonie and Tribondeau,which of the following groups would not be as sensitive to radiation?

Accepted Answer

A)  Fetuses 
B)  Infants 
C)  Children 
D)  Adults 
A)  Fetuses 
B)  Infants 
C)  Children 
D)  Adults

Question 16

Which of the following would not be a mutation as a result of radiation to the gonads?

Accepted Answer

A)  Cleft palate 
B)  Spina bifida 
C)  Polydactyly 
D)  Leukemia 
A)  Cleft palate 
B)  Spina bifida 
C)  Polydactyly 
D)  Leukemia

Question 17

Patient doses in radiography are usually calculated as the:

Accepted Answer

A)  air kerma (Gy-a). 
B)  cumulative dose (Gy-t). 
C)  absorbed dose (Gy-t). 
D)  entrance skin exposure (ES
E) . 
A)  air kerma (Gy-a). 
B)  cumulative dose (Gy-t). 
C)  absorbed dose (Gy-t). 
D)  entrance skin exposure (ES
E) .

Question 18

The greatest cause of unnecessary radiation to patients is from:

Accepted Answer

A)  repeat exposures. 
B)  CT scans. 
C)  radon gas. 
D)  chest x-rays. 
A)  repeat exposures. 
B)  CT scans. 
C)  radon gas. 
D)  chest x-rays.

Question 19

To ensure the lifetime risk of occupationally exposed persons remains within acceptable limits,each person cannot exceed a lifetime dose. The lifetime dose is termed the ______ dose.

Accepted Answer

A)  absorbed 
B)  equivalent 
C)  effective 
D)  cumulative effective 
A)  absorbed 
B)  equivalent 
C)  effective 
D)  cumulative effective

Question 20

Which of the following radiographic examinations typically delivers the greatest gonadal exposure?

Accepted Answer

A)  Chest 
B)  Pelvis 
C)  Skull 
D)  Limb 
A)  Chest 
B)  Pelvis 
C)  Skull 
D)  Limb

Exam 11: Radiobiology and Radiation Safety

Short-term effects of radiation would occur within how long?

Radiation exposure to the gonads can cause changes in the genes of the irradiated person called:

The greatest risk for a pregnant women who receives a high exposure is during the:

Which of the following cells would not be as vulnerable to x-rays?

The federal regulation for the lead-equivalency of gloves worn during radiographic procedures is _____ mm.

At what whole-body equivalent dose will death occur?

A declared pregnant radiation worker should wear a second personnel monitor. This monitor should be positioned at the:

Which of the following effects of radiation exposure are predictable?

Today,the average American is exposed to how much of an annual radiation dose?

The SI unit for measuring absorbed dose is the:

Which of the following radiation values will always be an equal dose in diagnostic radiology?

Which of the following can the limited operator do to keep radiation exposure to patients as low as reasonably achievable? 1) Use a small radiation field. 2) Use the highest kVp possible. 3) Never use an SID below 40-in.

In general,which radiation effect are we most concerned about?

A gonad shield should be used whenever the edge of the radiation field is within ________ cm of the gonads.

According to the Law of Bergonie and Tribondeau,which of the following groups would not be as sensitive to radiation?

Which of the following would not be a mutation as a result of radiation to the gonads?

Patient doses in radiography are usually calculated as the:

The greatest cause of unnecessary radiation to patients is from:

To ensure the lifetime risk of occupationally exposed persons remains within acceptable limits,each person cannot exceed a lifetime dose. The lifetime dose is termed the ______ dose.

Which of the following radiographic examinations typically delivers the greatest gonadal exposure?

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

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

Bone Densitometry

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