Question 1

The higher the atomic number of an atom,the greater the probability of a photoelectric interaction.

Accepted Answer

A) True 
 B)False  True

Question 2

The greater the angle of deflection of a Compton scatter photon:

Accepted Answer

A) the more likely it will interact with the image receptor 
B) the lower the energy of the photon 
C) the higher the energy of the photon 
D) the more likely it will become part of the remnant radiation 
A) the more likely it will interact with the image receptor 
B) the lower the energy of the photon 
C) the higher the energy of the photon 
D) the more likely it will become part of the remnant radiation B

Question 3

The fog seen on the radiographic image is the result of

Accepted Answer

A) coherent scattering 
B) classical scattering 
C) photoelectric interactions 
D) Compton interactions 
A) coherent scattering 
B) classical scattering 
C) photoelectric interactions 
D) Compton interactions D

Question 4

Following absorption of the incident photon in the atom's nucleus,a photodisintegration interaction may result in

Accepted Answer

A) positrons being ejected from the nucleus 
B) neutrons being ejected from the nucleus 
C) protons being ejected from the nucleus 
D) B and C 
A) positrons being ejected from the nucleus 
B) neutrons being ejected from the nucleus 
C) protons being ejected from the nucleus 
D) B and C

Question 5

Most classical scatter photons

Accepted Answer

A) are the result of the removal of an orbital electron 
B) are absorbed in the body 
C) are transmitted through the body 
D) become remnant radiation 
A) are the result of the removal of an orbital electron 
B) are absorbed in the body 
C) are transmitted through the body 
D) become remnant radiation

Question 6

During a photoelectric interaction,

Accepted Answer

A) an inner-shell electron is ejected 
B) an outer-shell electron is ejected 
C) no electrons are ejected 
D) electrons for all levels are ejected 
A) an inner-shell electron is ejected 
B) an outer-shell electron is ejected 
C) no electrons are ejected 
D) electrons for all levels are ejected

Question 7

Reducing the amount of Compton scattering

Accepted Answer

A) is impossible 
B) is extremely difficult to accomplish 
C) is very important in producing quality images 
D) all of the above 
A) is impossible 
B) is extremely difficult to accomplish 
C) is very important in producing quality images 
D) all of the above

Question 8

A positron is

Accepted Answer

A) the same as an electron 
B) a positively charged electron 
C) the same as a proton 
D) a positively charged neutron 
A) the same as an electron 
B) a positively charged electron 
C) the same as a proton 
D) a positively charged neutron

Question 9

After ejection from the atom's nucleus,when the positron interacts with an electron

Accepted Answer

A) an annihilation event occurs 
B) the electron and positron are both destroyed 
C) two x-ray photons are produced 
D) all of the above 
A) an annihilation event occurs 
B) the electron and positron are both destroyed 
C) two x-ray photons are produced 
D) all of the above

Question 10

If a middle-shell electron is removed during a Compton interaction

Accepted Answer

A) secondary photons are produced 
B) a secondary electron is ejected 
C) a Compton scatter photon is produced 
D) all of the above 
A) secondary photons are produced 
B) a secondary electron is ejected 
C) a Compton scatter photon is produced 
D) all of the above

Question 11

Coherent scattering involves

Accepted Answer

A) an x-ray photon with high energy 
B) an x-ray photon with low energy 
C) ionization 
D) all of the above 
A) an x-ray photon with high energy 
B) an x-ray photon with low energy 
C) ionization 
D) all of the above

Question 12

The greater the absorption of radiation

Accepted Answer

A) the greater the differential absorption 
B) the better the image quality 
C) the greater the patient dose 
D) all of the above 
A) the greater the differential absorption 
B) the better the image quality 
C) the greater the patient dose 
D) all of the above

Question 13

All Compton scatter photons travel in the direction of the image receptor.

Accepted Answer

A) True 
 B)False

Question 14

The effect of classical scatter interactions on image quality

Accepted Answer

A) is significant 
B) is minimal 
C) is that quality is improved 
D) B and C 
A) is significant 
B) is minimal 
C) is that quality is improved 
D) B and C

Question 15

The x-ray photons that are produced as a result of a characteristic cascade during a Compton interaction

Accepted Answer

A) are characteristic x-ray photons 
B) are brems x-ray photons 
C) are Compton x-ray photons 
D) are "braking" x-ray photons 
A) are characteristic x-ray photons 
B) are brems x-ray photons 
C) are Compton x-ray photons 
D) are "braking" x-ray photons

Question 16

The major source of radiation exposure to technologists is due to

Accepted Answer

A) coherent scattering 
B) classical scattering 
C) photoelectric interactions 
D) Compton interactions 
A) coherent scattering 
B) classical scattering 
C) photoelectric interactions 
D) Compton interactions

Question 17

Classical interactions are also known as

Accepted Answer

A) coherent scattering 
B) Compton scattering 
C) Thomson scattering 
D) A and C 
E) B and C 
A) coherent scattering 
B) Compton scattering 
C) Thomson scattering 
D) A and C 
E) B and C

Question 18

For photodisintegration to occur,the incident photon must have an energy level of at least

Accepted Answer

A) 100 keV 
B) 1.02 MeV 
C) 10 MeV 
D) 100 MeV 
A) 100 keV 
B) 1.02 MeV 
C) 10 MeV 
D) 100 MeV

Question 19

Protective apparel is often made of lead because it

Accepted Answer

A) is very heavy 
B) can be made very thick 
C) is inexpensive 
D) has a high atomic number 
A) is very heavy 
B) can be made very thick 
C) is inexpensive 
D) has a high atomic number

Question 20

The x-ray photon produced during classical scattering

Accepted Answer

A) is lower energy than the incident photon 
B) is higher energy than the incident photon 
C) travels in a different direction than the incoming photon 
D) travels in the same direction than the incoming photon 
A) is lower energy than the incident photon 
B) is higher energy than the incident photon 
C) travels in a different direction than the incoming photon 
D) travels in the same direction than the incoming photon

The higher the atomic number of an atom,the greater the probability of a photoelectric interaction.

The greater the angle of deflection of a Compton scatter photon:

The fog seen on the radiographic image is the result of

Following absorption of the incident photon in the atom's nucleus,a photodisintegration interaction may result in

Most classical scatter photons

During a photoelectric interaction,

Reducing the amount of Compton scattering

A positron is

After ejection from the atom's nucleus,when the positron interacts with an electron

If a middle-shell electron is removed during a Compton interaction

Coherent scattering involves

The greater the absorption of radiation

All Compton scatter photons travel in the direction of the image receptor.

The effect of classical scatter interactions on image quality

The x-ray photons that are produced as a result of a characteristic cascade during a Compton interaction

The major source of radiation exposure to technologists is due to

Classical interactions are also known as

For photodisintegration to occur,the incident photon must have an energy level of at least

Protective apparel is often made of lead because it

The x-ray photon produced during classical scattering

Introduction to the Imaging Sciences

Structure of the Atom

Electromagnetic and Particulate Radiation

The X-Ray Circuit

The X-Ray Tube

X-Ray Production

Image Production

Image Quality and Characteristics

Radiographic Exposure Technique

Scatter Control

Image Receptors

Exposure Technique Selection

Image Intensified Fluoroscopy

Additional Equipment

Computed Tomography

Filters

Exam 7: X-Ray Interactions With Matter

The higher the atomic number of an atom,the greater the probability of a photoelectric interaction.

The greater the angle of deflection of a Compton scatter photon:

The fog seen on the radiographic image is the result of

Following absorption of the incident photon in the atom's nucleus,a photodisintegration interaction may result in

Most classical scatter photons

During a photoelectric interaction,

Reducing the amount of Compton scattering

A positron is

After ejection from the atom's nucleus,when the positron interacts with an electron

If a middle-shell electron is removed during a Compton interaction

Coherent scattering involves

The greater the absorption of radiation

All Compton scatter photons travel in the direction of the image receptor.

The effect of classical scatter interactions on image quality

The x-ray photons that are produced as a result of a characteristic cascade during a Compton interaction

The major source of radiation exposure to technologists is due to

Classical interactions are also known as

For photodisintegration to occur,the incident photon must have an energy level of at least

Protective apparel is often made of lead because it

The x-ray photon produced during classical scattering

Introduction to the Imaging Sciences

Structure of the Atom

Electromagnetic and Particulate Radiation

The X-Ray Circuit

The X-Ray Tube

X-Ray Production

Image Production

Image Quality and Characteristics

Radiographic Exposure Technique

Scatter Control

Image Receptors

Exposure Technique Selection

Image Intensified Fluoroscopy

Additional Equipment

Computed Tomography

Filters