Question 1

Therapeutic radioisotopes are characterized by:

Accepted Answer

A)  very short half-lives. 
B)  half-lives that are exactly the same. 
C)  relatively long half-lives. 
D)  half-lives that remain constant for all eternity. 
A)  very short half-lives. 
B)  half-lives that are exactly the same. 
C)  relatively long half-lives. 
D)  half-lives that remain constant for all eternity. C

Question 2

If enough explosives are used to spread radioactive material over a broad area,then radioactivity is:

Accepted Answer

A)  extremely hazardous and may be much higher than background levels. 
B)  moderately hazardous and may be higher than background levels. 
C)  slightly hazardous and may be only slightly higher than background levels. 
D)  diluted and may not be much higher than background levels. 
A)  extremely hazardous and may be much higher than background levels. 
B)  moderately hazardous and may be higher than background levels. 
C)  slightly hazardous and may be only slightly higher than background levels. 
D)  diluted and may not be much higher than background levels. D

Question 3

Considering the design of the medical imaging suites listed below,which suite presents the most unique additional radiation safety problems?

Accepted Answer

A)  Computer radiography suite 
B)  PET and CT imaging suite 
C)  Digital mammography suite 
D)  Digital fluoroscopy suite 
A)  Computer radiography suite 
B)  PET and CT imaging suite 
C)  Digital mammography suite 
D)  Digital fluoroscopy suite B

Question 4

Radioactive material that is attached to or associated with dust particles or in liquid form on various surfaces defines the term:

Accepted Answer

A)  radioactive contamination. 
B)  radioactive dispersal device. 
C)  radioactive fallout. 
D)  radioactive syndrome. 
A)  radioactive contamination. 
B)  radioactive dispersal device. 
C)  radioactive fallout. 
D)  radioactive syndrome.

Question 5

During a radiation emergency,the dose limit for individuals engaging in lifesaving activities is:

Accepted Answer

A)  50 mSv per event. 
B)  100 mSv per event. 
C)  250 mSv per event. 
D)  500 mSv per event. 
A)  50 mSv per event. 
B)  100 mSv per event. 
C)  250 mSv per event. 
D)  500 mSv per event.

Question 6

Diagnostic techniques in nuclear medicine typically make use of ___________ radioisotopes as radioactive tracers.

Accepted Answer

A)  long-lived 
B)  short-lived 
C)  very weak 
D)  potentially lethal 
A)  long-lived 
B)  short-lived 
C)  very weak 
D)  potentially lethal

Question 7

What is the half-life of Technetium-99m?

Accepted Answer

A)  6 hours 
B)  3 hours 
C)  6 minutes 
D)  3 minutes 
A)  6 hours 
B)  3 hours 
C)  6 minutes 
D)  3 minutes

Question 8

The design of a _______________ imaging suite involves significant radiation safety concerns.

Accepted Answer

A)  diagnostic x-ray 
B)  computed radiography 
C)  computed tomography 
D)  PET and CT 
A)  diagnostic x-ray 
B)  computed radiography 
C)  computed tomography 
D)  PET and CT

Question 9

During a radiation emergency,at a dose rate of ____________,emergency personnel should await specific instructions from radiation experts on how to proceed.

Accepted Answer

A)  0.1 Sv/hr 
B)  0.5 Sv/hr 
C)  1.0 Sv/hr 
D)  5.0 Sv/hr 
A)  0.1 Sv/hr 
B)  0.5 Sv/hr 
C)  1.0 Sv/hr 
D)  5.0 Sv/hr

Question 10

While a patient receiving Iodine-131 (¹³¹I) therapy is hospitalized,a large,_________,rolling lead shield can be positioned between the patient and any attending personnel for protection.

Accepted Answer

A)  up to 1-inch-thick 
B)  2-inch-thick 
C)  3-inch-thick 
D)  6-inch-thick 
A)  up to 1-inch-thick 
B)  2-inch-thick 
C)  3-inch-thick 
D)  6-inch-thick

Question 11

The actual long-term health effects of a "dirty bomb" are likely to be:

Accepted Answer

A)  catastrophic. 
B)  maximal. 
C)  minimal. 
D)  nonexistent. 
A)  catastrophic. 
B)  maximal. 
C)  minimal. 
D)  nonexistent.

Question 12

Each Fluorine-18 (¹⁸F) nuclear transformation by positron decay yields two highly penetrating _________ photons.

Accepted Answer

A)  250-keV 
B)  472-keV 
C)  511-kev 
D)  777-keV 
A)  250-keV 
B)  472-keV 
C)  511-kev 
D)  777-keV

Question 13

In __________,a neutron transforms itself into a combination of a proton and an energetic electron.

Accepted Answer

A)  alpha decay 
B)  beta decay 
C)  gamma decay 
D)  x-ray absorption 
A)  alpha decay 
B)  beta decay 
C)  gamma decay 
D)  x-ray absorption

Question 14

Iodine-125 (¹²⁵I) in the form of titanium-encapsulated cylindrical seeds has been used quite extensively within the past decade to give a tumoricidal radiation equivalent dose for:

Accepted Answer

A)  malignant brain tumors. 
B)  malignant breast tumors. 
C)  malignant lung tumors. 
D)  prostate cancers that are confined within the prostate gland. 
A)  malignant brain tumors. 
B)  malignant breast tumors. 
C)  malignant lung tumors. 
D)  prostate cancers that are confined within the prostate gland.

Question 15

Tellurium-125 (¹²⁵Te) has:

Accepted Answer

A)  125 protons and 125 neutrons. 
B)  75 protons and 63 neutrons. 
C)  52 protons and 73 neutrons. 
D)  45 protons and 58 neutrons. 
A)  125 protons and 125 neutrons. 
B)  75 protons and 63 neutrons. 
C)  52 protons and 73 neutrons. 
D)  45 protons and 58 neutrons.

Therapeutic radioisotopes are characterized by:

If enough explosives are used to spread radioactive material over a broad area,then radioactivity is:

Considering the design of the medical imaging suites listed below,which suite presents the most unique additional radiation safety problems?

Radioactive material that is attached to or associated with dust particles or in liquid form on various surfaces defines the term:

During a radiation emergency,the dose limit for individuals engaging in lifesaving activities is:

Diagnostic techniques in nuclear medicine typically make use of ___________ radioisotopes as radioactive tracers.

What is the half-life of Technetium-99m?

The design of a _______________ imaging suite involves significant radiation safety concerns.

During a radiation emergency,at a dose rate of ____________,emergency personnel should await specific instructions from radiation experts on how to proceed.

While a patient receiving Iodine-131 (¹³¹I) therapy is hospitalized,a large,_________,rolling lead shield can be positioned between the patient and any attending personnel for protection.

The actual long-term health effects of a "dirty bomb" are likely to be:

Each Fluorine-18 (¹⁸F) nuclear transformation by positron decay yields two highly penetrating _________ photons.

In __________,a neutron transforms itself into a combination of a proton and an energetic electron.

Iodine-125 (¹²⁵I) in the form of titanium-encapsulated cylindrical seeds has been used quite extensively within the past decade to give a tumoricidal radiation equivalent dose for:

Tellurium-125 (¹²⁵Te) has:

Introduction to Radiation Protection

Radiation: Types, Sources, and Doses Received

Interaction of X-Radiation With Matter

Radiation Quantities and Units

Radiation Monitoring

Overview of Cell Biology

Molecular and Cellular Radiation Biology

Early Deterministic Radiation Effects on Organ Systems

Late Deterministic and Stochastic Radiation Effects on Organ Systems

Dose Limits for Exposure to Ionizing Radiation

Equipment Design for Radiation Protection

Management of Patient Radiation Dose During Diagnostic X-Ray Procedures

Management of Imaging Personnel Radiation Dose During Diagnostic X-Ray Procedures

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Exam 14: Radioisotopes and Radiation Protection

Therapeutic radioisotopes are characterized by:

If enough explosives are used to spread radioactive material over a broad area,then radioactivity is:

Considering the design of the medical imaging suites listed below,which suite presents the most unique additional radiation safety problems?

Radioactive material that is attached to or associated with dust particles or in liquid form on various surfaces defines the term:

During a radiation emergency,the dose limit for individuals engaging in lifesaving activities is:

Diagnostic techniques in nuclear medicine typically make use of ___________ radioisotopes as radioactive tracers.

What is the half-life of Technetium-99m?

The design of a _______________ imaging suite involves significant radiation safety concerns.

During a radiation emergency,at a dose rate of ____________,emergency personnel should await specific instructions from radiation experts on how to proceed.

While a patient receiving Iodine-131 (¹³¹I) therapy is hospitalized,a large,_________,rolling lead shield can be positioned between the patient and any attending personnel for protection.

The actual long-term health effects of a "dirty bomb" are likely to be:

Each Fluorine-18 (¹⁸F) nuclear transformation by positron decay yields two highly penetrating _________ photons.

In __________,a neutron transforms itself into a combination of a proton and an energetic electron.

Iodine-125 (¹²⁵I) in the form of titanium-encapsulated cylindrical seeds has been used quite extensively within the past decade to give a tumoricidal radiation equivalent dose for:

Tellurium-125 (¹²⁵Te) has:

Introduction to Radiation Protection

Radiation: Types, Sources, and Doses Received

Interaction of X-Radiation With Matter

Radiation Quantities and Units

Radiation Monitoring

Overview of Cell Biology

Molecular and Cellular Radiation Biology

Early Deterministic Radiation Effects on Organ Systems

Late Deterministic and Stochastic Radiation Effects on Organ Systems

Dose Limits for Exposure to Ionizing Radiation

Equipment Design for Radiation Protection

Management of Patient Radiation Dose During Diagnostic X-Ray Procedures

Management of Imaging Personnel Radiation Dose During Diagnostic X-Ray Procedures

Filters