Question 1

When cells are sensitized by oxygen,the resulting survival curve has a reduced extrapolation number.

Accepted Answer

A) True 
 B)False

Question 2

Isoeffect curves are most closely associated with which of the following?

Accepted Answer

A)  oxygen enhancement 
B)  radiation syndromes 
C)  tolerance doses 
D)  fractionation 
A)  oxygen enhancement 
B)  radiation syndromes 
C)  tolerance doses 
D)  fractionation

Question 3

BUDR is a radioprotector.

Accepted Answer

A) True 
 B)False

Question 4

The oxygen enhancement ratio is greater for densely ionizing radiation.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following is not an early response to radiation?

Accepted Answer

A)  breast cancer 
B)  erythema 
C)  diarrhea 
D)  chromosome aberrations 
A)  breast cancer 
B)  erythema 
C)  diarrhea 
D)  chromosome aberrations

Question 6

Which of the following terms describes the separation of water into hydrogen and oxygen following exposure to radiation?

Accepted Answer

A)  radiolysis 
B)  radioactivity 
C)  ionization 
D)  Duplication 
A)  radiolysis 
B)  radioactivity 
C)  ionization 
D)  Duplication

Question 7

The greatest amount of energy is deposited as a charged particle,such as a proton,comes to rest.

Accepted Answer

A) True 
 B)False

Question 8

What is the typical OER value for sparsely ionizing radiation?

Accepted Answer

A)  0.5 to 1.0 
B)  1.0 to 2.0 
C)  2.5 to 3.0 
D)  greater than 3.0 
A)  0.5 to 1.0 
B)  1.0 to 2.0 
C)  2.5 to 3.0 
D)  greater than 3.0

Question 9

Acute responding normal tissues manifest their injuries within a few months after irradiation.

Accepted Answer

A) True 
 B)False

Question 10

Fractionation of radiation dose administration to neoplastic tissues has which of the following effects? (Mark all that apply.)

Accepted Answer

A)  reoxygenation of hypoxic tumor cells thus promote their sensitivity to subsequent
Doses 
B)  favors repair of radiation injury in normal cells over that of cancer cells 
C)  favors repopulation of normal tissues slightly 
D)  reduces or blunts the effects of the radiation injury in early responding normal tissues 
A)  reoxygenation of hypoxic tumor cells thus promote their sensitivity to subsequent
Doses 
B)  favors repair of radiation injury in normal cells over that of cancer cells 
C)  favors repopulation of normal tissues slightly 
D)  reduces or blunts the effects of the radiation injury in early responding normal tissues

Question 11

Populations that do not divide are generally radiosensitive.

Accepted Answer

A) True 
 B)False

Question 12

For a given particle,as its velocity increases,LET increases.

Accepted Answer

A) True 
 B)False

Question 13

Which of the following terms is used to describe radiation damage to a cell that is not sufficient to kill the cell?

Accepted Answer

A)  RBE 
B)  SLD 
C)  TLD 
D)  LD50/40 
A)  RBE 
B)  SLD 
C)  TLD 
D)  LD50/40

Question 14

In order to produce the same biologic effect as a single fraction of 5,000 cGy,the total dose of a fractionated treatment regimen will be greater than 5,000 cGy.

Accepted Answer

A) True 
 B)False

Question 15

SLD repair increases with increasing LET.

Accepted Answer

A) True 
 B)False

Question 16

Acute side effects of treatment related ionizing radiation are exclusively due to the total volume of radiation treated.

Accepted Answer

A) True 
 B)False

Question 17

RBE relates to the ability of different radiation doses,energies,or types to produce a specific biologic response.

Accepted Answer

A) True 
 B)False

Question 18

All tumors reoxygenate at the same rate.

Accepted Answer

A) True 
 B)False

Question 19

Organ dose can be measured directly.

Accepted Answer

A) True 
 B)False

Question 20

What does the term interphase death mean?

Accepted Answer

A)  Cell dies prior to entering interphase. 
B)  Cell dies prior to leaving interphase. 
C)  Cell dies between mitotic phases. 
D)  The entire organism dies. 
A)  Cell dies prior to entering interphase. 
B)  Cell dies prior to leaving interphase. 
C)  Cell dies between mitotic phases. 
D)  The entire organism dies.

Exam 4: Overview of Radiobiology

When cells are sensitized by oxygen,the resulting survival curve has a reduced extrapolation number.

Isoeffect curves are most closely associated with which of the following?

BUDR is a radioprotector.

The oxygen enhancement ratio is greater for densely ionizing radiation.

Which of the following is not an early response to radiation?

Which of the following terms describes the separation of water into hydrogen and oxygen following exposure to radiation?

The greatest amount of energy is deposited as a charged particle,such as a proton,comes to rest.

What is the typical OER value for sparsely ionizing radiation?

Acute responding normal tissues manifest their injuries within a few months after irradiation.

Fractionation of radiation dose administration to neoplastic tissues has which of the following effects? (Mark all that apply.)

Populations that do not divide are generally radiosensitive.

For a given particle,as its velocity increases,LET increases.

Which of the following terms is used to describe radiation damage to a cell that is not sufficient to kill the cell?

In order to produce the same biologic effect as a single fraction of 5,000 cGy,the total dose of a fractionated treatment regimen will be greater than 5,000 cGy.

SLD repair increases with increasing LET.

Acute side effects of treatment related ionizing radiation are exclusively due to the total volume of radiation treated.

RBE relates to the ability of different radiation doses,energies,or types to produce a specific biologic response.

All tumors reoxygenate at the same rate.

Organ dose can be measured directly.

What does the term interphase death mean?

Cancer: An Overview

The Ethics and Legal Considerations of Cancer Management

Principles of Pathology

Detection and Diagnosis

Medical Imaging

Treatment Delivery Equipment

Treatment Procedures

Radiation Therapy Education

Infection Control in Radiation Oncology Facilities

Patient Assessment

Pharmacology and Drug Administration

Applied Mathematics Review

Introduction to Radiation Therapy Physics

Aspects of Brachytherapy

Special Procedures

Intensity-Modulated Radiation Therapy

Radiation Safety and Protection

Quality Improvement in Radiation Oncology

Surface and Sectional Anatomy

Simulator Design

Conventional Fluoroscopy-Basedsimulation Procedures

Computed Tomography Simulation

Photon Dosimetry Concepts and Calculations

Photon Dose Distributions

Electron Beams in Radiation Therapy

Electronic Charting,and Image Management

Bone,Cartilage and Soft Tissue Sarcomas

Lymphoreticular System Tumors

Leukemia

Endocrine System Tumors

Respiratory System Tumors

Head and Neck Cancers

Central Nervous System Tumors

Digestive System Tumors

Gynecological Tumors

Male Reproductive and Genitourinary Tumors

Breast Cancer

Pediatric Solid Tumors

Skin Cancers and Melanoma

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