,Table Of Contents
PART I. Radiation Basics
1. Radiation History
2. Radiation Physics
3. Radiation Characteristics
4. Radiation Biology
5. Radiation Protection
PART II. Equipment, Film, And Processing Basics
6. Dental X-Ray Equipment
7. Dental X-Ray Film
8. Dental X-Ray Image Characteristics
9. Dental X-Ray Film Processing
10. Quality Assurance In The Dental Office
PART III. Dental Radiographer Basics
11. Dental Radiographs And The Dental Radiographer
12. Patient Relations And The Dental Radiographer
13. Patient Education And The Dental Radiographer
14. Legal Issues And The Dental Radiographer
15. Infection Control And The Dental Radiographer
PART IV. Technique Basics
16. Introduction To Radiographic Examinations
17. Paralleling Technique
18. Bisecting Technique
19. Bite-Wing Technique
20. Exposure And Technique Errors
21. Occlusal And Localization Techniques
22. Panoramic Imaging
23. Extraoral Imaging
,24. Imaging Of Patients With Special Needs
PART V. Digital Imaging Basics
25. Digital Imaging
26. Three-Dimensional Digital Imaging
PART VI. Normal Anatomy And Film Mounting Basics
27. Normal Anatomy: Intraoral Images
28. Film Mounting And Viewing
29. Normal Anatomy: Panoramic Images
PART VII. Image Interpretation Basics
30. Introduction To Image Interpretation
31. Descriptive Terminology
32. Identification Of Restorations, Dental Materials, And Foreign Objects
33. Interpretation Of Dental Caries
34. Interpretation Of Periodontal Disease
35. Interpretation Of Trauma And Pulpal And Periapical Lesions
,Chapter 01: Radiation History
Iannucci: Dental Radiography, 5th Edition
MULTIPLE CHOICE
1. Radiation Is Defined As
A. A Form Of Energy Carried By Waves Or
Streams Of Particles.
B. A Beam Of Energy That Has The
Power To Penetrate Substances And
Record Image Shadows On A
Receptor.
C. A High-Energy Radiation Produced By
The Collision Of A Beam Of Electrons
With A Metal Target In An X-Ray Tube.
D. A Branch Of Medicine That Deals With
The Use Of X-Rays.
ANSWER: A
Radiation Is A Form Of Energy Carried By Waves Or Streams Of Particles. An X-Ray Is
A Beam Of Energy That Has The Power To Penetrate Substances And Record Image
Shadows On A Receptor. X-Radiation Is A High-Energy Radiation Produced By The
Collision Of A Beam Of Electrons With A Metal Target In An X-Ray Tube. Radiology
Is A Branch Of Medicine That Deals With The Use Of X-Rays.
DIF: Recall REF: Page 2 OBJ: 1
TOP: CDA, RHS, III.B.2. Describe The Characteristics Of X-Radiation
MSC: NBDHE, 2.0 Obtaining And Interpreting Radiographs | NBDHE, 2.1 Principles Of
Radiophysics And Radiobiology
2. A Radiograph Is Defined As
A. A Beam Of Energy That Has The Power
To Penetrate Substances And Record
Image
Shadows On A Receptor.
B. A Picture On Film Produced By The
Passage Of X-Rays Through An Object
Or Body.
C. The Art And Science Of Making
Radiographs By The Exposure Of An
Image Receptor To X- Rays.
D. A Form Of Energy Carried By Waves Or
A Stream Of Particles.
ANSWER: B
An X-Ray Is A Beam Of Energy That Has The Power To Penetrate Substances And
Record Image Shadows On A Receptor. A Radiograph Is A Picture On Film Produced By
The Passage Of X- Rays Through An Object Or Body. Radiography Is The Art And
Science Of Making Dental Images By The Exposure Of A Receptor To X-Rays.
Radiation Is A Form Of Energy Carried By Waves Or Streams Of Particles.
,DIF: Comprehension REF: Page 2 OBJ: 1
TOP: CDA, RHS, III.B.2. Describe The Characteristics Of X-Radiation
MSC: NBDHE, 2.0 Obtaining And Interpreting Radiographs | NBDHE, 2.1 Principles Of
Radiophysics And Radiobiology
3. Your Patient Asked You Why Dental Images Are Important. Which Of
The Following Is The Correct Response?
A. An Oral Examination With Dental Images
Limits The Practitioner To What Is Seen
Clinically.
B. All Dental Diseases And Conditions
Produce Clinical Signs And Symptoms.
C. Dental Images Are Not A Necessary
Component Of Comprehensive Patient
Care.
D. Many Dental Diseases Are Typically
Discovered Only Through The Use Of
Dental
Images.
ANSWER: D
An Oral Examination Without Dental Images Limits The Practitioner To What Is Seen
Clinically. Many Dental Diseases And Conditions Produce No Clinical Signs And
Symptoms. Dental Images Are A Necessary Component Of Comprehensive Patient Care.
Many Dental Diseases Are Typically Discovered Only Through The Use Of Dental
Images.
DIF: Application REF: Page 2 OBJ: 2
TOP: CDA, RHS, III.B.2. Describe The Characteristics Of X-Radiation
MSC: NBDHE, 2.0 Obtaining And Interpreting Radiographs | NBDHE, 2.5 General
4. The X-Ray Was Discovered By
A. Heinrich Geissler
B. Wilhelm Roentgen
C. Johann Hittorf
D. William Crookes
ANSWER: B
Heinrich Geissler Built The First Vacuum Tube In 1838. Wilhelm Roentgen Discovered
The X-Ray On November 8, 1895. Johann Hittorf Observed In 1870 That Discharges
Emitted From The Negative Electrode Of A Vacuum Tube Traveled In Straight Lines,
Produced Heat,
And Resulted In A Greenish Fluorescence. William Crookes Discovered In The Late
1870s That Cathode Rays Were Streams Of Charged Particles.
DIF: Recall REF: Page 2 OBJ: 4
TOP: CDA, RHS, III.B.2. Describe The Characteristics Of X-Radiation
MSC: NBDHE, 2.0 Obtaining And Interpreting Radiographs | NBDHE, 2.5 General
,5. Who Exposed The First Dental Radiograph In The United States Using A Live Person?
A. Otto Walkoff
B. Wilhelm Roentgen
C. Edmund Kells
D. Weston Price
ANSWER: C
Otto Walkoff Was A German Dentist Who Made The First Dental Radiograph. Wilhelm
Roentgen Was A Bavarian Physicist Who Discovered The X-Ray. Edmund Kells
Exposed The First Dental Radiograph In The United States Using A Live Person. Price
Introduced The Bisecting Technique In 1904.
DIF: Recall REF: Page 4 OBJ: 5
TOP: CDA, RHS, III.B.2. Describe The Characteristics Of X-Radiation
MSC: NBDHE, 2.0 Obtaining And Interpreting Radiographs | NBDHE, 2.5 General
6. Current Fast Radiographic Film Requires % Less Exposure Time Than
The Initial Exposure Times Used In 1920.
A. 33
B. 98
C. 73
D. 2
ANSWER: D
Current Fast Radiographic Film Requires 98% Less Exposure Time Than The Initial
Exposure Times Used In 1920.
DIF: Comprehension REF: Page 5 OBJ: 6
TOP: CDA, RHS, III.B.2. Describe The Characteristics Of X-Radiation
MSC: NBDHE, 2.0 Obtaining And Interpreting Radiographs | NBDHE, 2.5 General
7. Who Modified The Paralleling Technique With The Introduction Of The
Long- Cone Technique?
A. C. Edmund Kells
B. Franklin W. Mccormack
C. F. Gordon Fitzgerald
D. Howard Riley Raper
ANSWER: C
C. Edmund Kells Introduced The Paralleling Technique In 1896. Franklin W.
Mccormack Reintroduced The Paralleling Technique In 1920. F. Gordon Fitzgerald
Modified The Paralleling Technique With The Introduction Of The Long-Cone
Technique. This Is The Technique Currently Used. Howard Riley Raper Modified The
Bisecting Technique And Introduced The Bite-Wing Technique In 1925.
DIF: Recall REF: Page 4 OBJ: 7
TOP: CDA, RHS, III.B.2. Describe The Characteristics Of X-Radiation
MSC: NBDHE, 2.0 Obtaining And Interpreting Radiographs | NBDHE, 2.5 General
, 8. Which Of The Following Is An Advantage Of Digital Imaging?
A. Increased Patient Radiation Exposure
B. Increased Patient Comfort
C. Increased Speed For Viewing Images
D. Increased Chemical Usage
ANSWER: C
Patient Exposure Is Reduced With Digital Imaging. Digital Sensors Are More Sensitive
To X- Rays Than Film. Digital Sensors Are Rigid And Bulky, Causing Decreased Patient
Comfort. The Image From Digital Sensors Is Uploaded Directly To The Computer And
Monitor Without The Need For Chemical Processing. This Allows For Immediate
Interpretation And Evaluation.
The Image From Digital Sensors Is Uploaded Directly To The Computer And Monitor
Without The Need For Chemical Processing.
DIF: Comprehension REF: Page 6 OBJ: 7
TOP: CDA, RHS, I.B.2. Demonstrate Basic Knowledge Of Digital
Radiography
MSC: NBDHE, 2.0 Obtaining And Interpreting Radiographs | NBDHE, 2.5 General
9. Which Discovery Was The Precursor To The Discovery Of X-Rays?
A. Beta Particles
B. Alpha Particles
C. Cathode Rays
D. Radioactive Materials
ANSWER: C
Beta Particles Are Fast Moving Electrons Emitted From The Nucleus Of Radioactive
Atoms And Are Not Associated With X-Rays. Alpha Particles Are Emitted From The
Nuclei Of Heavy Metals And Are Not Associated With X-Rays. Wilhelm Roentgen Was
Experimenting With Cathode Rays When He Discovered X-Rays. Radioactive Materials
Are Certain Unstable Atoms Or Elements That Are In The Process Of Spontaneous
Disintegration Or Decay.
DIF: Comprehension REF: Page 3 OBJ: 4
TOP: CDA, RHS, III.B.2. Describe The Characteristics Of X-Radiation
MSC: NBDHE, 2.0 Obtaining And Interpreting Radiographs | NBDHE, 2.5 General
10. Which Of The Following Would You Place In The Patient’s Mouth In
Order To Take Dental X-Rays?
A. Image
B. Image Receptor
C. Radiograph
D. Dental Radiograph
ANSWER: B
An Image Is A Picture Or Likeness Of An Object. An Image Receptor Is The Recording
Medium (Film, Phosphor Plate, Or Digital Sensor) That Is Placed In The Patient’s
Mouth To Record The Image Produced By The X-Rays. A Radiograph Is An Image Of
Two-Dimensional Representation Of A Three- Dimensional Object. A Dental
Radiograph Is The Dental Image Produced On A Recording Medium.
,
,Chapter 02: Radiation Physics
Iannucci: Dental Radiography, 5th Edition
MULTIPLE CHOICE
1. The Fundamental Unit Of Matter Is The
A. Proton.
B. Neutron.
C. Electron.
D. Atom.
ANSWER: D
A Proton Is A Subatomic Particle; The Fundamental Unit Of Matter Is The Atom. A
Neutron Is A Subatomic Particle; The Fundamental Unit Of Matter Is The Atom. An
Electron Is A Subatomic Particle; The Fundamental Unit Of Matter Is The Atom. The
Fundamental Unit Of Matter Is The Atom.
DIF: Recall REF: Page 8 OBJ: 1
TOP: CDA, RHS, III.B.2. Describe The Characteristics Of X-Radiation
MSC: NBDHE, 2.0 Obtaining And Interpreting Radiographs | NBDHE, 2.1 Principles Of
Radiophysics And Radiobiology
2. The Nucleus Of An Atom Contains
A. Protons.
B. Neutrons.
C. Protons And Neutrons.
D. Electrons.
ANSWER: C
The Nucleus Of An Atom Contains Neutrons As Well As Protons. The Nucleus Of An
Atom Contains Protons As Well As Neutrons. The Nucleus Of An Atom Contains
Protons And Neutrons. The Nucleus Of An Atom Does Not Contain Electrons; It
Contains Protons And Neutrons.
DIF: Recall REF: Page 8 OBJ: 2
TOP: CDA, RHS, III.B.2. Describe The Characteristics Of X-Radiation
MSC: NBDHE, 2.0 Obtaining And Interpreting Radiographs | NBDHE, 2.1 Principles Of
Radiophysics And Radiobiology
3. Which Subatomic Particle Carries A Negative Electrical Charge?
A. A Neutron
B. A Proton
C. An Electron
D. A Nucleon
ANSWER: C
A Neutron Does Not Carry An Electrical Charge. A Proton Carries A Positive Electrical
Charge. An Electron Carries A Negative Electrical Charge. A Nucleon Carries A Positive
(Proton) Or
, No (Neutron) Electrical Charge.
DIF: Comprehension REF: Page 8 OBJ: 2
TOP: CDA, RHS, III.B.2. Describe The Characteristics Of X-Radiation
MSC: NBDHE, 2.0 Obtaining And Interpreting Radiographs | NBDHE, 2.1 Principles Of
Radiophysics And Radiobiology
4. Which Of The Following Elements Is The Simplest Atom?
A. Hydrogen (H #1)
B. Helium (He #2)
C. Nitrogen (N #7)
D. Oxygen (O #8)
ANSWER: A
Atomic Numbers Are Assigned From Simplest To Most Complex. Hydrogen Is The
Simplest Atom; With A Single Proton, It Has An Atomic Number Of 1. Helium Has An
Atomic Number Of 2. Nitrogen Has An Atomic Number Of 7. Oxygen Has An Atomic
Number Of 8.
DIF: Comprehension REF: Page 8 OBJ: 2
TOP: CDA, RHS, III.B.2. Describe The Characteristics Of X-Radiation
MSC: NBDHE, 2.0 Obtaining And Interpreting Radiographs | NBDHE, 2.1 Principles Of
Radiophysics And Radiobiology
5. Which Of The Following Statements Is True Of Orbits Or Shells In The Atom?
A. Protons Travel Around The Nucleus In
Well- Defined Shells.
B. An Atom Contains Innumerable Shells.
C. The Energy Level Within Each Shell Is
The Same.
D. The Orbiting Shell Closest To The
Nucleus Has The Highest Energy Level.
ANSWER: D
Electrons Travel Around The Nucleus In Well-Defined Shells. An Atom Contains A
Maximum Of Seven Shells. Each Of The Maximum Seven Shells Within An Atom
Represents A Different Energy Level. The Orbiting Shell Closest To The Nucleus Has The
Highest Energy Level. The K Shell Is The Orbiting Shell Closest To The Nucleus.
DIF: Comprehension REF: Page 8 OBJ: 2
TOP: CDA, RHS, III.B.2. Describe The Characteristics Of X-Radiation
MSC: NBDHE, 2.0 Obtaining And Interpreting Radiographs | NBDHE, 2.1 Principles Of
Radiophysics And Radiobiology
6. The Binding Energy Or Binding Force Of An Electron Is
A. Determined By The Distance Between
The Neutrons And Protons Within The
Nucleus.
B. Determined By The Distance Between
The Orbiting Electrons And The Nucleus.
PART I. Radiation Basics
1. Radiation History
2. Radiation Physics
3. Radiation Characteristics
4. Radiation Biology
5. Radiation Protection
PART II. Equipment, Film, And Processing Basics
6. Dental X-Ray Equipment
7. Dental X-Ray Film
8. Dental X-Ray Image Characteristics
9. Dental X-Ray Film Processing
10. Quality Assurance In The Dental Office
PART III. Dental Radiographer Basics
11. Dental Radiographs And The Dental Radiographer
12. Patient Relations And The Dental Radiographer
13. Patient Education And The Dental Radiographer
14. Legal Issues And The Dental Radiographer
15. Infection Control And The Dental Radiographer
PART IV. Technique Basics
16. Introduction To Radiographic Examinations
17. Paralleling Technique
18. Bisecting Technique
19. Bite-Wing Technique
20. Exposure And Technique Errors
21. Occlusal And Localization Techniques
22. Panoramic Imaging
23. Extraoral Imaging
,24. Imaging Of Patients With Special Needs
PART V. Digital Imaging Basics
25. Digital Imaging
26. Three-Dimensional Digital Imaging
PART VI. Normal Anatomy And Film Mounting Basics
27. Normal Anatomy: Intraoral Images
28. Film Mounting And Viewing
29. Normal Anatomy: Panoramic Images
PART VII. Image Interpretation Basics
30. Introduction To Image Interpretation
31. Descriptive Terminology
32. Identification Of Restorations, Dental Materials, And Foreign Objects
33. Interpretation Of Dental Caries
34. Interpretation Of Periodontal Disease
35. Interpretation Of Trauma And Pulpal And Periapical Lesions
,Chapter 01: Radiation History
Iannucci: Dental Radiography, 5th Edition
MULTIPLE CHOICE
1. Radiation Is Defined As
A. A Form Of Energy Carried By Waves Or
Streams Of Particles.
B. A Beam Of Energy That Has The
Power To Penetrate Substances And
Record Image Shadows On A
Receptor.
C. A High-Energy Radiation Produced By
The Collision Of A Beam Of Electrons
With A Metal Target In An X-Ray Tube.
D. A Branch Of Medicine That Deals With
The Use Of X-Rays.
ANSWER: A
Radiation Is A Form Of Energy Carried By Waves Or Streams Of Particles. An X-Ray Is
A Beam Of Energy That Has The Power To Penetrate Substances And Record Image
Shadows On A Receptor. X-Radiation Is A High-Energy Radiation Produced By The
Collision Of A Beam Of Electrons With A Metal Target In An X-Ray Tube. Radiology
Is A Branch Of Medicine That Deals With The Use Of X-Rays.
DIF: Recall REF: Page 2 OBJ: 1
TOP: CDA, RHS, III.B.2. Describe The Characteristics Of X-Radiation
MSC: NBDHE, 2.0 Obtaining And Interpreting Radiographs | NBDHE, 2.1 Principles Of
Radiophysics And Radiobiology
2. A Radiograph Is Defined As
A. A Beam Of Energy That Has The Power
To Penetrate Substances And Record
Image
Shadows On A Receptor.
B. A Picture On Film Produced By The
Passage Of X-Rays Through An Object
Or Body.
C. The Art And Science Of Making
Radiographs By The Exposure Of An
Image Receptor To X- Rays.
D. A Form Of Energy Carried By Waves Or
A Stream Of Particles.
ANSWER: B
An X-Ray Is A Beam Of Energy That Has The Power To Penetrate Substances And
Record Image Shadows On A Receptor. A Radiograph Is A Picture On Film Produced By
The Passage Of X- Rays Through An Object Or Body. Radiography Is The Art And
Science Of Making Dental Images By The Exposure Of A Receptor To X-Rays.
Radiation Is A Form Of Energy Carried By Waves Or Streams Of Particles.
,DIF: Comprehension REF: Page 2 OBJ: 1
TOP: CDA, RHS, III.B.2. Describe The Characteristics Of X-Radiation
MSC: NBDHE, 2.0 Obtaining And Interpreting Radiographs | NBDHE, 2.1 Principles Of
Radiophysics And Radiobiology
3. Your Patient Asked You Why Dental Images Are Important. Which Of
The Following Is The Correct Response?
A. An Oral Examination With Dental Images
Limits The Practitioner To What Is Seen
Clinically.
B. All Dental Diseases And Conditions
Produce Clinical Signs And Symptoms.
C. Dental Images Are Not A Necessary
Component Of Comprehensive Patient
Care.
D. Many Dental Diseases Are Typically
Discovered Only Through The Use Of
Dental
Images.
ANSWER: D
An Oral Examination Without Dental Images Limits The Practitioner To What Is Seen
Clinically. Many Dental Diseases And Conditions Produce No Clinical Signs And
Symptoms. Dental Images Are A Necessary Component Of Comprehensive Patient Care.
Many Dental Diseases Are Typically Discovered Only Through The Use Of Dental
Images.
DIF: Application REF: Page 2 OBJ: 2
TOP: CDA, RHS, III.B.2. Describe The Characteristics Of X-Radiation
MSC: NBDHE, 2.0 Obtaining And Interpreting Radiographs | NBDHE, 2.5 General
4. The X-Ray Was Discovered By
A. Heinrich Geissler
B. Wilhelm Roentgen
C. Johann Hittorf
D. William Crookes
ANSWER: B
Heinrich Geissler Built The First Vacuum Tube In 1838. Wilhelm Roentgen Discovered
The X-Ray On November 8, 1895. Johann Hittorf Observed In 1870 That Discharges
Emitted From The Negative Electrode Of A Vacuum Tube Traveled In Straight Lines,
Produced Heat,
And Resulted In A Greenish Fluorescence. William Crookes Discovered In The Late
1870s That Cathode Rays Were Streams Of Charged Particles.
DIF: Recall REF: Page 2 OBJ: 4
TOP: CDA, RHS, III.B.2. Describe The Characteristics Of X-Radiation
MSC: NBDHE, 2.0 Obtaining And Interpreting Radiographs | NBDHE, 2.5 General
,5. Who Exposed The First Dental Radiograph In The United States Using A Live Person?
A. Otto Walkoff
B. Wilhelm Roentgen
C. Edmund Kells
D. Weston Price
ANSWER: C
Otto Walkoff Was A German Dentist Who Made The First Dental Radiograph. Wilhelm
Roentgen Was A Bavarian Physicist Who Discovered The X-Ray. Edmund Kells
Exposed The First Dental Radiograph In The United States Using A Live Person. Price
Introduced The Bisecting Technique In 1904.
DIF: Recall REF: Page 4 OBJ: 5
TOP: CDA, RHS, III.B.2. Describe The Characteristics Of X-Radiation
MSC: NBDHE, 2.0 Obtaining And Interpreting Radiographs | NBDHE, 2.5 General
6. Current Fast Radiographic Film Requires % Less Exposure Time Than
The Initial Exposure Times Used In 1920.
A. 33
B. 98
C. 73
D. 2
ANSWER: D
Current Fast Radiographic Film Requires 98% Less Exposure Time Than The Initial
Exposure Times Used In 1920.
DIF: Comprehension REF: Page 5 OBJ: 6
TOP: CDA, RHS, III.B.2. Describe The Characteristics Of X-Radiation
MSC: NBDHE, 2.0 Obtaining And Interpreting Radiographs | NBDHE, 2.5 General
7. Who Modified The Paralleling Technique With The Introduction Of The
Long- Cone Technique?
A. C. Edmund Kells
B. Franklin W. Mccormack
C. F. Gordon Fitzgerald
D. Howard Riley Raper
ANSWER: C
C. Edmund Kells Introduced The Paralleling Technique In 1896. Franklin W.
Mccormack Reintroduced The Paralleling Technique In 1920. F. Gordon Fitzgerald
Modified The Paralleling Technique With The Introduction Of The Long-Cone
Technique. This Is The Technique Currently Used. Howard Riley Raper Modified The
Bisecting Technique And Introduced The Bite-Wing Technique In 1925.
DIF: Recall REF: Page 4 OBJ: 7
TOP: CDA, RHS, III.B.2. Describe The Characteristics Of X-Radiation
MSC: NBDHE, 2.0 Obtaining And Interpreting Radiographs | NBDHE, 2.5 General
, 8. Which Of The Following Is An Advantage Of Digital Imaging?
A. Increased Patient Radiation Exposure
B. Increased Patient Comfort
C. Increased Speed For Viewing Images
D. Increased Chemical Usage
ANSWER: C
Patient Exposure Is Reduced With Digital Imaging. Digital Sensors Are More Sensitive
To X- Rays Than Film. Digital Sensors Are Rigid And Bulky, Causing Decreased Patient
Comfort. The Image From Digital Sensors Is Uploaded Directly To The Computer And
Monitor Without The Need For Chemical Processing. This Allows For Immediate
Interpretation And Evaluation.
The Image From Digital Sensors Is Uploaded Directly To The Computer And Monitor
Without The Need For Chemical Processing.
DIF: Comprehension REF: Page 6 OBJ: 7
TOP: CDA, RHS, I.B.2. Demonstrate Basic Knowledge Of Digital
Radiography
MSC: NBDHE, 2.0 Obtaining And Interpreting Radiographs | NBDHE, 2.5 General
9. Which Discovery Was The Precursor To The Discovery Of X-Rays?
A. Beta Particles
B. Alpha Particles
C. Cathode Rays
D. Radioactive Materials
ANSWER: C
Beta Particles Are Fast Moving Electrons Emitted From The Nucleus Of Radioactive
Atoms And Are Not Associated With X-Rays. Alpha Particles Are Emitted From The
Nuclei Of Heavy Metals And Are Not Associated With X-Rays. Wilhelm Roentgen Was
Experimenting With Cathode Rays When He Discovered X-Rays. Radioactive Materials
Are Certain Unstable Atoms Or Elements That Are In The Process Of Spontaneous
Disintegration Or Decay.
DIF: Comprehension REF: Page 3 OBJ: 4
TOP: CDA, RHS, III.B.2. Describe The Characteristics Of X-Radiation
MSC: NBDHE, 2.0 Obtaining And Interpreting Radiographs | NBDHE, 2.5 General
10. Which Of The Following Would You Place In The Patient’s Mouth In
Order To Take Dental X-Rays?
A. Image
B. Image Receptor
C. Radiograph
D. Dental Radiograph
ANSWER: B
An Image Is A Picture Or Likeness Of An Object. An Image Receptor Is The Recording
Medium (Film, Phosphor Plate, Or Digital Sensor) That Is Placed In The Patient’s
Mouth To Record The Image Produced By The X-Rays. A Radiograph Is An Image Of
Two-Dimensional Representation Of A Three- Dimensional Object. A Dental
Radiograph Is The Dental Image Produced On A Recording Medium.
,
,Chapter 02: Radiation Physics
Iannucci: Dental Radiography, 5th Edition
MULTIPLE CHOICE
1. The Fundamental Unit Of Matter Is The
A. Proton.
B. Neutron.
C. Electron.
D. Atom.
ANSWER: D
A Proton Is A Subatomic Particle; The Fundamental Unit Of Matter Is The Atom. A
Neutron Is A Subatomic Particle; The Fundamental Unit Of Matter Is The Atom. An
Electron Is A Subatomic Particle; The Fundamental Unit Of Matter Is The Atom. The
Fundamental Unit Of Matter Is The Atom.
DIF: Recall REF: Page 8 OBJ: 1
TOP: CDA, RHS, III.B.2. Describe The Characteristics Of X-Radiation
MSC: NBDHE, 2.0 Obtaining And Interpreting Radiographs | NBDHE, 2.1 Principles Of
Radiophysics And Radiobiology
2. The Nucleus Of An Atom Contains
A. Protons.
B. Neutrons.
C. Protons And Neutrons.
D. Electrons.
ANSWER: C
The Nucleus Of An Atom Contains Neutrons As Well As Protons. The Nucleus Of An
Atom Contains Protons As Well As Neutrons. The Nucleus Of An Atom Contains
Protons And Neutrons. The Nucleus Of An Atom Does Not Contain Electrons; It
Contains Protons And Neutrons.
DIF: Recall REF: Page 8 OBJ: 2
TOP: CDA, RHS, III.B.2. Describe The Characteristics Of X-Radiation
MSC: NBDHE, 2.0 Obtaining And Interpreting Radiographs | NBDHE, 2.1 Principles Of
Radiophysics And Radiobiology
3. Which Subatomic Particle Carries A Negative Electrical Charge?
A. A Neutron
B. A Proton
C. An Electron
D. A Nucleon
ANSWER: C
A Neutron Does Not Carry An Electrical Charge. A Proton Carries A Positive Electrical
Charge. An Electron Carries A Negative Electrical Charge. A Nucleon Carries A Positive
(Proton) Or
, No (Neutron) Electrical Charge.
DIF: Comprehension REF: Page 8 OBJ: 2
TOP: CDA, RHS, III.B.2. Describe The Characteristics Of X-Radiation
MSC: NBDHE, 2.0 Obtaining And Interpreting Radiographs | NBDHE, 2.1 Principles Of
Radiophysics And Radiobiology
4. Which Of The Following Elements Is The Simplest Atom?
A. Hydrogen (H #1)
B. Helium (He #2)
C. Nitrogen (N #7)
D. Oxygen (O #8)
ANSWER: A
Atomic Numbers Are Assigned From Simplest To Most Complex. Hydrogen Is The
Simplest Atom; With A Single Proton, It Has An Atomic Number Of 1. Helium Has An
Atomic Number Of 2. Nitrogen Has An Atomic Number Of 7. Oxygen Has An Atomic
Number Of 8.
DIF: Comprehension REF: Page 8 OBJ: 2
TOP: CDA, RHS, III.B.2. Describe The Characteristics Of X-Radiation
MSC: NBDHE, 2.0 Obtaining And Interpreting Radiographs | NBDHE, 2.1 Principles Of
Radiophysics And Radiobiology
5. Which Of The Following Statements Is True Of Orbits Or Shells In The Atom?
A. Protons Travel Around The Nucleus In
Well- Defined Shells.
B. An Atom Contains Innumerable Shells.
C. The Energy Level Within Each Shell Is
The Same.
D. The Orbiting Shell Closest To The
Nucleus Has The Highest Energy Level.
ANSWER: D
Electrons Travel Around The Nucleus In Well-Defined Shells. An Atom Contains A
Maximum Of Seven Shells. Each Of The Maximum Seven Shells Within An Atom
Represents A Different Energy Level. The Orbiting Shell Closest To The Nucleus Has The
Highest Energy Level. The K Shell Is The Orbiting Shell Closest To The Nucleus.
DIF: Comprehension REF: Page 8 OBJ: 2
TOP: CDA, RHS, III.B.2. Describe The Characteristics Of X-Radiation
MSC: NBDHE, 2.0 Obtaining And Interpreting Radiographs | NBDHE, 2.1 Principles Of
Radiophysics And Radiobiology
6. The Binding Energy Or Binding Force Of An Electron Is
A. Determined By The Distance Between
The Neutrons And Protons Within The
Nucleus.
B. Determined By The Distance Between
The Orbiting Electrons And The Nucleus.
