Question 1

Photoelectric interactions occur only at the lower end of the diagnostic range of photon energies.

Accepted Answer

A) True 
 B)False

Question 2

Imaging which of the following results in the most attenuation?

Accepted Answer

A)  Bone. 
B)  Air in lungs. 
C)  Fat. 
D)  Muscle. 
A)  Bone. 
B)  Air in lungs. 
C)  Fat. 
D)  Muscle.

Question 3

During fluoroscopy, the x-ray tube is usually positioned underneath the table.

Accepted Answer

A) True 
 B)False

Question 4

Intensifying screens are associated with

Accepted Answer

A)  film-screen imaging 
B)  digital imaging 
C)  film-screen and digital imaging 
D)  dynamic imaging 
A)  film-screen imaging 
B)  digital imaging 
C)  film-screen and digital imaging 
D)  dynamic imaging

Question 5

Imaging which of the following results in the least attenuation?

Accepted Answer

A)  Bone. 
B)  Air in lungs. 
C)  Fat. 
D)  Muscle. 
A)  Bone. 
B)  Air in lungs. 
C)  Fat. 
D)  Muscle.

Question 6

The probability of a Compton interaction occurring depends on

Accepted Answer

A)  the type of tissue being imaged 
B)  the binding energy of the atom's inner-shell electron 
C)  the energy of the incoming x-ray photon 
D)  all of these 
A)  the type of tissue being imaged 
B)  the binding energy of the atom's inner-shell electron 
C)  the energy of the incoming x-ray photon 
D)  all of these

Question 7

Place the following film-screen imaging steps in the correct order, from beginning to end: I remnant radiation is absorbed by intensifying screens
II chemical processing creates a permanent image
III light from intensifying screens expose film emulsion
IV remnant radiation reaches the intensifying screens

Accepted Answer

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

Question 8

All of the radiation that reaches the image receptor is used to create the radiographic image.

Accepted Answer

A) True 
 B)False

Question 9

Before processing, the image receptor has a(n) __________ image.

Accepted Answer

A)  latent 
B)  visible 
C)  invisible 
D)  latent and invisible 
A)  latent 
B)  visible 
C)  invisible 
D)  latent and invisible

Question 10

It is not possible for a photoelectric interaction to occur between a 50-keV x-ray photon and an atom with inner-shell electrons that have a binding energy of 60 keV or more.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following is an example of an image receptor?

Accepted Answer

A)  Film-screen. 
B)  Digital. 
C)  Analog digital converter. 
D)  Film-screen and digital. 
A)  Film-screen. 
B)  Digital. 
C)  Analog digital converter. 
D)  Film-screen and digital.

Question 12

Imaging tissues with lower atomic numbers results in

Accepted Answer

A)  increased attenuation 
B)  decreased attenuation 
C)  no change in attenuation 
D)  increased absorption 
A)  increased attenuation 
B)  decreased attenuation 
C)  no change in attenuation 
D)  increased absorption

Question 13

Tissues with higher atomic numbers appear __________ on a digital image.

Accepted Answer

A)  darker 
B)  grayer 
C)  brighter 
D)  less bright 
A)  darker 
B)  grayer 
C)  brighter 
D)  less bright

Question 14

Complete absorption of the diagnostic range x-ray photon is the interaction known as

Accepted Answer

A)  Compton scattering 
B)  photoelectric interaction 
C)  Coherent scattering 
D)  photodisintegration 
A)  Compton scattering 
B)  photoelectric interaction 
C)  Coherent scattering 
D)  photodisintegration

Question 15

A pixel's ______________ determines the amount the shades of gray that can be displayed in a digital image.

Accepted Answer

A)  size 
B)  location 
C)  height 
D)  bit depth 
A)  size 
B)  location 
C)  height 
D)  bit depth

Question 16

Scatter radiation may

Accepted Answer

A)  expose people near the patient 
B)  increase patient exposure 
C)  contributes no useful information if it strikes the image receptor 
D)  all of these 
A)  expose people near the patient 
B)  increase patient exposure 
C)  contributes no useful information if it strikes the image receptor 
D)  all of these

Question 17

Coherent scattering

Accepted Answer

A)  is a significant interaction during radiographic imaging 
B)  has minimal effect on the imaging process 
C)  never affects the diagnostic image 
D)  none of these 
A)  is a significant interaction during radiographic imaging 
B)  has minimal effect on the imaging process 
C)  never affects the diagnostic image 
D)  none of these

Question 18

Decreased attenuation results in

Accepted Answer

A)  more x-ray photons reaching the image receptor 
B)  fewer x-ray photons reaching the image receptor 
C)  no change in the number of photons reaching the image receptor 
D)  increased absorption 
A)  more x-ray photons reaching the image receptor 
B)  fewer x-ray photons reaching the image receptor 
C)  no change in the number of photons reaching the image receptor 
D)  increased absorption

Photoelectric interactions occur only at the lower end of the diagnostic range of photon energies.

Imaging which of the following results in the most attenuation?

During fluoroscopy, the x-ray tube is usually positioned underneath the table.

Intensifying screens are associated with

Imaging which of the following results in the least attenuation?

The probability of a Compton interaction occurring depends on

All of the radiation that reaches the image receptor is used to create the radiographic image.

Before processing, the image receptor has a(n) __________ image.

It is not possible for a photoelectric interaction to occur between a 50-keV x-ray photon and an atom with inner-shell electrons that have a binding energy of 60 keV or more.

Which of the following is an example of an image receptor?

Imaging tissues with lower atomic numbers results in

Tissues with higher atomic numbers appear __________ on a digital image.

Complete absorption of the diagnostic range x-ray photon is the interaction known as

A pixel's ______________ determines the amount the shades of gray that can be displayed in a digital image.

Scatter radiation may

Coherent scattering

Decreased attenuation results in

Introduction to the Imaging Sciences

Structure of the Atom

Electromagnetic and Particulate Radiation

The X-Ray Circuit

The X-Ray Tube

X-Ray Production

X-Ray Interactions With Matter

Image Quality and Characteristics

Digital Image Receptors

Radiographic Exposure Technique

Scatter Control

Exposure Technique Selection

Film-Screen Imaging

Fluoroscopic Imaging

Additional Equipment

Computed Tomography

Filters

Exam 8: Image Production

Photoelectric interactions occur only at the lower end of the diagnostic range of photon energies.

Imaging which of the following results in the most attenuation?

During fluoroscopy, the x-ray tube is usually positioned underneath the table.

Intensifying screens are associated with

Imaging which of the following results in the least attenuation?

The probability of a Compton interaction occurring depends on

All of the radiation that reaches the image receptor is used to create the radiographic image.

Before processing, the image receptor has a(n) __________ image.

It is not possible for a photoelectric interaction to occur between a 50-keV x-ray photon and an atom with inner-shell electrons that have a binding energy of 60 keV or more.

Which of the following is an example of an image receptor?

Imaging tissues with lower atomic numbers results in

Tissues with higher atomic numbers appear __________ on a digital image.

Complete absorption of the diagnostic range x-ray photon is the interaction known as

A pixel's ______________ determines the amount the shades of gray that can be displayed in a digital image.

Scatter radiation may

Coherent scattering

Decreased attenuation results in

Introduction to the Imaging Sciences

Structure of the Atom

Electromagnetic and Particulate Radiation

The X-Ray Circuit

The X-Ray Tube

X-Ray Production

X-Ray Interactions With Matter

Image Quality and Characteristics

Digital Image Receptors

Radiographic Exposure Technique

Scatter Control

Exposure Technique Selection

Film-Screen Imaging

Fluoroscopic Imaging

Additional Equipment

Computed Tomography

Filters