Question 1

The output intensities of reproduced exposures should not vary more than _____% from each other.

Accepted Answer

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

Question 2

What is the minimum requirement for filtration on x-ray equipment operating above 70 kVp?

Accepted Answer

A)  1.5 mm Al equivalent 
B)  2.0 mm Al equivalent 
C)  2.5 mm Al equivalent 
D)  3.5 mm Al equivalent 
A)  1.5 mm Al equivalent 
B)  2.0 mm Al equivalent 
C)  2.5 mm Al equivalent 
D)  3.5 mm Al equivalent C

Question 3

Positive beam limitation must be accurate to within _____% of the SID.

Accepted Answer

A)  10 
B)  5 
C)  2 
D)  1 
A)  10 
B)  5 
C)  2 
D)  1 C

Question 4

The fluoroscopic exposure control switch is always a(n) ___________ type.

Accepted Answer

A)  rheostat 
B)  automatic 
C)  deadman 
D)  on-off 
A)  rheostat 
B)  automatic 
C)  deadman 
D)  on-off

Question 5

Gas-filled radiation detectors are based on the ________________________.

Accepted Answer

A)  thermoluminescence of crystals 
B)  photoemission of electrons 
C)  ionization of gas 
D)  scintillation of phosphors 
A)  thermoluminescence of crystals 
B)  photoemission of electrons 
C)  ionization of gas 
D)  scintillation of phosphors

Question 6

The advantage(s) of using thermoluminescent dosimeters is/are: I. small size.
II) immediate results.
III) tissue equivalent response.

Accepted Answer

A)  I and II 
B)  II only 
C)  II and III 
D)  I and III 
A)  I and II 
B)  II only 
C)  II and III 
D)  I and III

Question 7

The source-to-skin distance must be no less than _____ cm on stationary fluoroscopes.

Accepted Answer

A)  30 
B)  38 
C)  42 
D)  48 
A)  30 
B)  38 
C)  42 
D)  48

Question 8

Devices designed to measure total accumulated radiation intensity are called ______.

Accepted Answer

A)  dosimeters 
B)  integrators 
C)  scintillation detectors 
D)  photo cathodes 
A)  dosimeters 
B)  integrators 
C)  scintillation detectors 
D)  photo cathodes

Question 9

The collimator light must be accurate to within _____% of the SID.

Accepted Answer

A)  10 
B)  5 
C)  2 
D)  1 
A)  10 
B)  5 
C)  2 
D)  1

Question 10

Measuring the relationship between the output intensities of adjacent mA stations is a test of _________________.

Accepted Answer

A)  HVL 
B)  beam limitation 
C)  reproducibility 
D)  linearity 
A)  HVL 
B)  beam limitation 
C)  reproducibility 
D)  linearity

Question 11

At the level of the tabletop, the intensity of the fluoroscopic beam should not exceed _______________ for each mA of operation at 80 kVp.

Accepted Answer

A)  2 mGy/hr 
B)  0.2 mGy/hr 
C)  21 mGy/min 
D)  0.21 mGy/min 
A)  2 mGy/hr 
B)  0.2 mGy/hr 
C)  21 mGy/min 
D)  0.21 mGy/min

Question 12

The intensity of scatter radiation 1 m from the patient is approximately _____ of the intensity of the incident beam at the patient.

Accepted Answer

A)  0.01% 
B)  0.1% 
C)  10% 
D)  50% 
A)  0.01% 
B)  0.1% 
C)  10% 
D)  50%

Question 13

The _____________ is used for precise calibration of the output intensity of diagnostic x-ray tubes.

Accepted Answer

A)  G-M counter 
B)  ion chamber 
C)  scintillation detector 
D)  proportional counter 
A)  G-M counter 
B)  ion chamber 
C)  scintillation detector 
D)  proportional counter

Question 14

A controlled area is one occupied primarily by ____________________.

Accepted Answer

A)  radiology personnel 
B)  patients 
C)  the general public 
D)  Both A and B 
A)  radiology personnel 
B)  patients 
C)  the general public 
D)  Both A and B

Question 15

A fluoroscopy system with automatic collimation must provide an unexposed border around the image at ____________ above the tabletop.

Accepted Answer

A)  all heights 
B)  35 cm 
C)  25 cm 
D)  18 cm 
A)  all heights 
B)  35 cm 
C)  25 cm 
D)  18 cm

Question 16

The x-ray control panel must show ____________.

Accepted Answer

A)  beam on time 
B)  mAs used 
C)  positive beam limitation 
D)  automatic exposure controls 
A)  beam on time 
B)  mAs used 
C)  positive beam limitation 
D)  automatic exposure controls

Question 17

A quantity that reflects both dose and volume of tissue irradiated is the ___________.

Accepted Answer

A)  estimated skin exposure 
B)  dose area product 
C)  proportional region 
D)  rem 
A)  estimated skin exposure 
B)  dose area product 
C)  proportional region 
D)  rem

Question 18

The design of an uncontrolled area in radiology is based on the NCRP recommended limit of _____ mGy/yr for the public.

Accepted Answer

A)  50 
B)  10 
C)  1 
D)  0.5 
A)  50 
B)  10 
C)  1 
D)  0.5

Question 19

The leakage radiation limit for x-ray tubes is less than _____ mGy/hr at 1 meter from the tube housing.

Accepted Answer

A)  0.50 
B)  1 
C)  2 
D)  3 
A)  0.50 
B)  1 
C)  2 
D)  3

Question 20

A Geiger-Muller counter is a(n) ________________________.

Accepted Answer

A)  scintillation detector 
B)  optically stimulated dosimeter 
C)  gas-filled detector 
D)  thermoluminescent dosimeter 
A)  scintillation detector 
B)  optically stimulated dosimeter 
C)  gas-filled detector 
D)  thermoluminescent dosimeter

Exam 36: Designing for Radiation Protection

The output intensities of reproduced exposures should not vary more than _____% from each other.

What is the minimum requirement for filtration on x-ray equipment operating above 70 kVp?

Positive beam limitation must be accurate to within _____% of the SID.

The fluoroscopic exposure control switch is always a(n) ___________ type.

Gas-filled radiation detectors are based on the ________________________.

The advantage(s) of using thermoluminescent dosimeters is/are: I. small size. II) immediate results. III) tissue equivalent response.

The source-to-skin distance must be no less than _____ cm on stationary fluoroscopes.

Devices designed to measure total accumulated radiation intensity are called ______.

The collimator light must be accurate to within _____% of the SID.

Measuring the relationship between the output intensities of adjacent mA stations is a test of _________________.

At the level of the tabletop, the intensity of the fluoroscopic beam should not exceed _______________ for each mA of operation at 80 kVp.

The intensity of scatter radiation 1 m from the patient is approximately _____ of the intensity of the incident beam at the patient.

The _____________ is used for precise calibration of the output intensity of diagnostic x-ray tubes.

A controlled area is one occupied primarily by ____________________.

A fluoroscopy system with automatic collimation must provide an unexposed border around the image at ____________ above the tabletop.

The x-ray control panel must show ____________.

A quantity that reflects both dose and volume of tissue irradiated is the ___________.

The design of an uncontrolled area in radiology is based on the NCRP recommended limit of _____ mGy/yr for the public.

The leakage radiation limit for x-ray tubes is less than _____ mGy/hr at 1 meter from the tube housing.

A Geiger-Muller counter is a(n) ________________________.

Essential Concepts of Radiologic Science

The Structure of Matter

Electromagnetic Energy

Electricity, Magnetism, and Electromagnetism

The X-ray Imaging System

The X-ray Tube

X-ray Production

X-ray Emission

X-ray Interaction with Matter

Radiographic Image Quality

Control of Scatter Radiation

Screen-Film Radiography

Screen-Film Radiographic Technique

Medical Imaging Computer Science

Computed Radiography

Digital Radiography

Digital Radiographic Technique

Viewing the Digital Image

Screen-Film Radiographic Artifacts

Screen-Film Radiographic Quality Control

Digital Radiographic Artifacts

Digital Radiographic Quality Control

Mammography

Mammography Quality Control

Fluoroscopy

Digital Fluoroscopy

Interventional Radiology

Computed Tomography

Human Biology

Fundamental Principles of Radiobiology

Molecular Radiobiology

Cellular Radiobiology

Deterministic Effects of Radiation

Stochastic Effects of Radiation

Health Physics

Radiography/Fluoroscopy Patient Radiation Dose

Computed Tomography Patient Radiation Dose

Patient Radiation Dose Management

Occupational Radiation Dose Management

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