Question 1

The LD50/60 is the dose of radiation to the whole-body that will result in death within _____ to _____% of the irradiated population.

Accepted Answer

A)  50 days, 60 
B)  60 days, 50 
C)  60 minutes, 50 
D)  50 minutes, 60 
A)  50 days, 60 
B)  60 days, 50 
C)  60 minutes, 50 
D)  50 minutes, 60 B

Question 2

The central nervous system syndrome occurs following a whole body dose of _____ Gy or more.

Accepted Answer

A)  50 
B)  20 
C)  10 
D)  5 
A)  50 
B)  20 
C)  10 
D)  5 A

Question 3

About half of the population will experience skin erythema following a localized dose of _____ Gy.

Accepted Answer

A)  5 
B)  3.5 
C)  1 
D)  0.5 
A)  5 
B)  3.5 
C)  1 
D)  0.5 A

Question 4

The most radiosensitive cells in the hematopoietic system of the human body are the _____.

Accepted Answer

A)  granulocytes 
B)  erythrocytes 
C)  lymphocytes 
D)  platelets 
A)  granulocytes 
B)  erythrocytes 
C)  lymphocytes 
D)  platelets

Question 5

There is usually a _____ before the symptoms of acute radiation syndromes appear.

Accepted Answer

A)  latent period 
B)  recovery period 
C)  prolonged illness 
D)  loss of hair 
A)  latent period 
B)  recovery period 
C)  prolonged illness 
D)  loss of hair

Question 6

Some radiation victims of _____ syndrome(s)may recover completely.

Accepted Answer

A)  central nervous system 
B)  gastrointestinal 
C)  hematologic 
D)  all of the above 
A)  central nervous system 
B)  gastrointestinal 
C)  hematologic 
D)  all of the above

Question 7

Localized doses of 7 Gy to the skin can cause _____.

Accepted Answer

A)  death 
B)  permanent hair loss 
C)  gastrointestinal syndrome 
D)  all of the above 
A)  death 
B)  permanent hair loss 
C)  gastrointestinal syndrome 
D)  all of the above

Question 8

The minimum dose lethal to humans is _____ Gy to the whole body.

Accepted Answer

A)  0.5 
B)  1 
C)  2 
D)  4 
A)  0.5 
B)  1 
C)  2 
D)  4

Question 9

The destruction of _____ cells in the intestinal lining causes death from GI syndrome.

Accepted Answer

A)  muscle 
B)  stem 
C)  mature 
D)  blood 
A)  muscle 
B)  stem 
C)  mature 
D)  blood

Question 10

A single chromosome aberration represents _____ to the DNA within the chromosome.

Accepted Answer

A)  a single hit 
B)  severe damage 
C)  little damage 
D)  no damage 
A)  a single hit 
B)  severe damage 
C)  little damage 
D)  no damage

Question 11

A subject would not experience _____ following a dose high enough to cause CNS syndrome.

Accepted Answer

A)  hematologic syndrome 
B)  gastrointestinal syndrome 
C)  prodromal syndrome 
D)  both A and B 
A)  hematologic syndrome 
B)  gastrointestinal syndrome 
C)  prodromal syndrome 
D)  both A and B

Question 12

Immediately following a whole body dose of 10 Gy the victim would experience (a)_____.

Accepted Answer

A)  sudden death 
B)  latent period 
C)  prodromal symptoms 
D)  hair loss 
A)  sudden death 
B)  latent period 
C)  prodromal symptoms 
D)  hair loss

Question 13

What would be the most likely immediate response to a whole body dose of 2 Gy?

Accepted Answer

A)  a sense of well-being 
B)  diarrhea, nausea, and vomiting 
C)  convulsive seizures and edema 
D)  increased strength 
A)  a sense of well-being 
B)  diarrhea, nausea, and vomiting 
C)  convulsive seizures and edema 
D)  increased strength

Question 14

The LD50/60 for humans is approximately _____ Gy.

Accepted Answer

A)  1 
B)  2.5 
C)  3.5 
D)  10 
A)  1 
B)  2.5 
C)  3.5 
D)  10

Question 15

A local dose of _____ rad(s)or more can cause gonadal dysfunction.

Accepted Answer

A)  1 
B)  5 
C)  10 
D)  100 
A)  1 
B)  5 
C)  10 
D)  100

Question 16

A person subjected to 50 Gy to the whole body may survive for _____ before death occurs.

Accepted Answer

A)  3 hours 
B)  24 hours 
C)  3 days 
D)  2 weeks 
A)  3 hours 
B)  24 hours 
C)  3 days 
D)  2 weeks

Question 17

During the latent period,the radiation victim experiences _____.

Accepted Answer

A)  hair loss 
B)  nausea and vomiting 
C)  skin erythema 
D)  well-being 
A)  hair loss 
B)  nausea and vomiting 
C)  skin erythema 
D)  well-being

Question 18

Skin effects from localized doses of radiation follow a _____ dose-response relationship.

Accepted Answer

A)  linear, threshold 
B)  nonlinear, nonthreshold 
C)  nonlinear, threshold 
D)  linear, nonthreshold 
A)  linear, threshold 
B)  nonlinear, nonthreshold 
C)  nonlinear, threshold 
D)  linear, nonthreshold

Question 19

Gonadal responses to radiation have been observed at doses as low as _____ Gy.

Accepted Answer

A)  1 
B)  0.5 
C)  0.2 
D)  0.1 
A)  1 
B)  0.5 
C)  0.2 
D)  0.1

Question 20

Death from acute radiation exposure follows a _____ dose-response relationship.

Accepted Answer

A)  nonlinear, threshold 
B)  linear, threshold 
C)  linear, nonthreshold 
D)  nonlinear, nonthreshold 
A)  nonlinear, threshold 
B)  linear, threshold 
C)  linear, nonthreshold 
D)  nonlinear, nonthreshold

Exam 33: Deterministic Effects of Radiation

The LD50/60 is the dose of radiation to the whole-body that will result in death within _____ to _____% of the irradiated population.

The central nervous system syndrome occurs following a whole body dose of _____ Gy or more.

About half of the population will experience skin erythema following a localized dose of _____ Gy.

The most radiosensitive cells in the hematopoietic system of the human body are the _____.

There is usually a _____ before the symptoms of acute radiation syndromes appear.

Some radiation victims of _____ syndrome(s)may recover completely.

Localized doses of 7 Gy to the skin can cause _____.

The minimum dose lethal to humans is _____ Gy to the whole body.

The destruction of _____ cells in the intestinal lining causes death from GI syndrome.

A single chromosome aberration represents _____ to the DNA within the chromosome.

A subject would not experience _____ following a dose high enough to cause CNS syndrome.

Immediately following a whole body dose of 10 Gy the victim would experience (a)_____.

What would be the most likely immediate response to a whole body dose of 2 Gy?

The LD50/60 for humans is approximately _____ Gy.

A local dose of _____ rad(s)or more can cause gonadal dysfunction.

A person subjected to 50 Gy to the whole body may survive for _____ before death occurs.

During the latent period,the radiation victim experiences _____.

Skin effects from localized doses of radiation follow a _____ dose-response relationship.

Gonadal responses to radiation have been observed at doses as low as _____ Gy.

Death from acute radiation exposure follows a _____ dose-response relationship.

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

Concepts of Radiographic Image Quality

Control of Scatter Radiation

Screen-Film Radiography

Screen-Film Radiographic Technique

Computers in Medical Imaging

Computed Radiography

Digital Radiography

Digital Radiographic Technique

Viewing the Digital Radiographic 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 Radiography

Computed Tomography

Human Biology

Fundamental Principles of Radiobiology

Molecular Radiobiology

Cellular Radiobiology

Stochastic Effects of Radiation

Health Physics

Designing for Radiation Protection

Patient Radiation Dose Management

Occupational Radiation Dose Management

Filters

The LD_50/60 is the dose of radiation to the whole-body that will result in death within _ to _% of the irradiated population.

The LD_50/60 for humans is approximately _____ Gy.