Question 1

Of the following, which radionuclide is used for permanent prostate implants?

Accepted Answer

A)  Gold 198 
B)  Cobalt 60 
C)  Cesium 137 
D)  Iridium 192 
A)  Gold 198 
B)  Cobalt 60 
C)  Cesium 137 
D)  Iridium 192

Question 2

Which of the following is an advantage of high-dose rate (HDR)over low-dose rate (LDR)?

Accepted Answer

A)  HDR is noninvasive. 
B)  HDR dosimetry is simpler. 
C)  Treatment time is decreased from 72 hours to 24 hours. 
D)  HDR can be given on an outpatient basis. 
A)  HDR is noninvasive. 
B)  HDR dosimetry is simpler. 
C)  Treatment time is decreased from 72 hours to 24 hours. 
D)  HDR can be given on an outpatient basis.

Question 3

The purpose of intravascular brachytherapy is to _______________________.

Accepted Answer

A)  eliminate arterial plaque 
B)  treat cancers of the heart 
C)  prevent heart disease 
D)  inhibit restenosis in coronary arteries 
A)  eliminate arterial plaque 
B)  treat cancers of the heart 
C)  prevent heart disease 
D)  inhibit restenosis in coronary arteries

Question 4

Permanent implants involve which of the following?
I.Sources packaged as tiny seeds
II.Sources with long half-lives
III.Sources implanted with needles in surgery
IV.Tumors that cannot be reached surgically

Accepted Answer

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

Question 5

Regarding question 20, why is brachytherapy the treatment of choice?

Accepted Answer

A)  It has a high energy. 
B)  It is more effective than stereotactic and proton therapy procedures. 
C)  Vision is spared due to a lack of radiation-induced changes. 
D)  It is less expensive for the patient. 
A)  It has a high energy. 
B)  It is more effective than stereotactic and proton therapy procedures. 
C)  Vision is spared due to a lack of radiation-induced changes. 
D)  It is less expensive for the patient.

Question 6

Which of the following has the shortest half-life?

Accepted Answer

A)  Gold 198 
B)  Iodine 125 
C)  Cesium 137 
D)  Cobalt 60 
A)  Gold 198 
B)  Iodine 125 
C)  Cesium 137 
D)  Cobalt 60

Question 7

The shape of the isodose distribution for a tandem and ovoid treatment is ____________.

Accepted Answer

A)  apple shaped 
B)  triangular 
C)  mushroom shaped 
D)  pear shaped 
A)  apple shaped 
B)  triangular 
C)  mushroom shaped 
D)  pear shaped

Question 8

For brachytherapy to the cervix, where is point A located in relation to the cervical os?

Accepted Answer

A)  2 cm superior and 2 cm lateral 
B)  1 cm superior and 2 cm lateral 
C)  2 cm inferior and 2 cm lateral 
D)  2 cm superior and 1 cm lateral 
A)  2 cm superior and 2 cm lateral 
B)  1 cm superior and 2 cm lateral 
C)  2 cm inferior and 2 cm lateral 
D)  2 cm superior and 1 cm lateral

Question 9

The radioisotope used to treat uveal melanoma of the eye is _________________.

Accepted Answer

A)  iridium 192 
B)  cesium 137 
C)  gold 198 
D)  iodine 125 
A)  iridium 192 
B)  cesium 137 
C)  gold 198 
D)  iodine 125

Question 10

As half-life increases, the overall activity ______________________.

Accepted Answer

A)  increases 
B)  decreases 
C)  remains unchanged 
A)  increases 
B)  decreases 
C)  remains unchanged

Exam 14: Aspects of Brachytherapy

Of the following, which radionuclide is used for permanent prostate implants?

Which of the following is an advantage of high-dose rate (HDR)over low-dose rate (LDR)?

The purpose of intravascular brachytherapy is to _______________________.

Permanent implants involve which of the following? I.Sources packaged as tiny seeds II.Sources with long half-lives III.Sources implanted with needles in surgery IV.Tumors that cannot be reached surgically

Regarding question 20, why is brachytherapy the treatment of choice?

Which of the following has the shortest half-life?

The shape of the isodose distribution for a tandem and ovoid treatment is ____________.

For brachytherapy to the cervix, where is point A located in relation to the cervical os?

The radioisotope used to treat uveal melanoma of the eye is _________________.

As half-life increases, the overall activity ______________________.

Cancer: An Overview

The Ethics and Legal Considerations of Cancer Management

Principles of Pathology

Overview of Radiobiology

Detection and Diagnosis

Medical Imaging

Treatment Delivery Equipment

Treatment Procedures

Infection Control in Radiation Oncology Facilities

Patient Assessment

Pharmacology and Drug Administration

Applied Mathematics Review

Introduction to Radiation Therapy Physics

Special Procedures

Particle Therapy

Radiation Safety and Protection

Patient Safety in Radiation Oncology

Quality Improvement in Radiation Oncology

Surface and Sectional Anatomy

Simulator Design

Computed Tomography Simulation

Photon Dosimetry Concepts and Calculations

Photon Dose Distributions

Electron Beams in Radiation Therapy

Electronic Charting and Image Management

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Lymphoreticular System Tumors

Endocrine System Tumors

Respiratory System Tumors

Head and Neck Cancers

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