Question 1

For a lateral lumbar spine,placing a lead shield on the table behind the area of exposure:

Accepted Answer

A)  reduces the scatter exiting the patient 
B)  reduces the scatter reaching the IR 
C)  A and B 
D)  none of the above 
A)  reduces the scatter exiting the patient 
B)  reduces the scatter reaching the IR 
C)  A and B 
D)  none of the above

Question 2

It is safe to assume that the x-ray beam field size and the light field size are exactly the same.

Accepted Answer

A) True 
 B)False

Question 3

Grid cutoff results in:

Accepted Answer

A)  reduced exposure to the IR 
B)  a light film-screen image 
C)  possible quantum mottle 
D)  all of the above 
A)  reduced exposure to the IR 
B)  a light film-screen image 
C)  possible quantum mottle 
D)  all of the above

Question 4

The type of grid that includes a channel for the IR to slide into is the:

Accepted Answer

A)  wafer grid 
B)  bucky 
C)  grid cap 
D)  grid cassette 
A)  wafer grid 
B)  bucky 
C)  grid cap 
D)  grid cassette

Question 5

The air gap technique is a frequently used method for reducing the amount of scatter radiation reaching the IR.

Accepted Answer

A) True 
 B)False

Question 6

The Moiré effect is also known as the _________ pattern.

Accepted Answer

A)  cheetah 
B)  giraffe 
C)  lion 
D)  zebra 
A)  cheetah 
B)  giraffe 
C)  lion 
D)  zebra

Question 7

The recommended SIDs that can be used with a focused grid is the:

Accepted Answer

A)  convergent line 
B)  focal distance 
C)  convergent point 
D)  focal range 
A)  convergent line 
B)  focal distance 
C)  convergent point 
D)  focal range

Question 8

Decreasing collimation (opening up the field size)results in:

Accepted Answer

A)  increased scatter production and higher contrast 
B)  increased scatter production and lower contrast 
C)  decreased scatter production and higher contrast 
D)  decreased scatter production and lower contrast 
A)  increased scatter production and higher contrast 
B)  increased scatter production and lower contrast 
C)  decreased scatter production and higher contrast 
D)  decreased scatter production and lower contrast

Question 9

Focused grids are more effective than parallel grids in absorbing scatter radiation and allowing transmitted radiation to reach the IR.

Accepted Answer

A) True 
 B)False

Question 10

When the x-ray beam is angled across the lead strips you have _________ cutoff.

Accepted Answer

A)  upside-down focused 
B)  off-level 
C)  off-center 
D)  off-focus 
A)  upside-down focused 
B)  off-level 
C)  off-center 
D)  off-focus

Question 11

Grids absorb almost all of the scatter radiation and allow all of the transmitted photons to pass through to the IR.

Accepted Answer

A) True 
 B)False

Question 12

When using automatic collimation,collimating to the anatomy of interest is an unnecessary waste of time;the beam is already collimated.

Accepted Answer

A) True 
 B)False

Question 13

The volume of tissue irradiated is determined by:

Accepted Answer

A)  the area of collimation 
B)  patient thickness 
C)  field size 
D)  all of the above 
A)  the area of collimation 
B)  patient thickness 
C)  field size 
D)  all of the above

Question 14

The air gap technique reduces the amount of scatter radiation reaching the IR because:

Accepted Answer

A)  more scatter is absorbed in the air 
B)  less scatter is produced in the patient 
C)  more scatter misses the IR 
D)  less scatter misses the IR 
A)  more scatter is absorbed in the air 
B)  less scatter is produced in the patient 
C)  more scatter misses the IR 
D)  less scatter misses the IR

Question 15

Which of the following produces the greatest amount of scatter radiation exiting the patient?

Accepted Answer

A)  low kVp and small field size 
B)  low kVp and large field size 
C)  high kVp and small field size 
D)  high kVp and large field size 
A)  low kVp and small field size 
B)  low kVp and large field size 
C)  high kVp and small field size 
D)  high kVp and large field size

Question 16

A flat piece of lead with a hole in it that has a flange directed toward the patient is a(n):

Accepted Answer

A)  aperture diaphragm 
B)  collimator 
C)  cone or cylinder 
D)  none of the above 
A)  aperture diaphragm 
B)  collimator 
C)  cone or cylinder 
D)  none of the above

Question 17

Grids absorb scatter radiation because the scattered photons:

Accepted Answer

A)  have high energy 
B)  have extremely low energy 
C)  travel in the same direction as the transmitted photons 
D)  travel at an angle to the transmitted photons 
A)  have high energy 
B)  have extremely low energy 
C)  travel in the same direction as the transmitted photons 
D)  travel at an angle to the transmitted photons

Question 18

When the x-ray beam is not lined up with the center of the grid you have _________ cutoff.

Accepted Answer

A)  upside-down focused 
B)  off-level 
C)  off-center 
D)  off-focus 
A)  upside-down focused 
B)  off-level 
C)  off-center 
D)  off-focus

Question 19

The number of lead lines per inch or centimeter is the grid:

Accepted Answer

A)  number 
B)  ratio 
C)  frequency 
D)  rating 
A)  number 
B)  ratio 
C)  frequency 
D)  rating

Question 20

Anyone in the room during an exposure must wear a lead apron to absorb the scatter radiation produced in the:

Accepted Answer

A)  table 
B)  patient 
C)  air 
D)  beam 
A)  table 
B)  patient 
C)  air 
D)  beam

For a lateral lumbar spine,placing a lead shield on the table behind the area of exposure:

It is safe to assume that the x-ray beam field size and the light field size are exactly the same.

Grid cutoff results in:

The type of grid that includes a channel for the IR to slide into is the:

The air gap technique is a frequently used method for reducing the amount of scatter radiation reaching the IR.

The Moiré effect is also known as the _________ pattern.

The recommended SIDs that can be used with a focused grid is the:

Decreasing collimation (opening up the field size)results in:

Focused grids are more effective than parallel grids in absorbing scatter radiation and allowing transmitted radiation to reach the IR.

When the x-ray beam is angled across the lead strips you have _________ cutoff.

Grids absorb almost all of the scatter radiation and allow all of the transmitted photons to pass through to the IR.

When using automatic collimation,collimating to the anatomy of interest is an unnecessary waste of time;the beam is already collimated.

The volume of tissue irradiated is determined by:

The air gap technique reduces the amount of scatter radiation reaching the IR because:

Which of the following produces the greatest amount of scatter radiation exiting the patient?

A flat piece of lead with a hole in it that has a flange directed toward the patient is a(n):

Grids absorb scatter radiation because the scattered photons:

When the x-ray beam is not lined up with the center of the grid you have _________ cutoff.

The number of lead lines per inch or centimeter is the grid:

Anyone in the room during an exposure must wear a lead apron to absorb the scatter radiation produced in the:

Introduction to the Imaging Sciences

Structure of the Atom

Electromagnetic and Particulate Radiation

X-Ray Circuit

The X-Ray Tube

X-Ray Production

X-Ray Interactions With Matter

Image Production

Image Characteristics

Radiographic Exposure Technique

Image Receptors

Automatic Exposure Control

Image Intensified Fluoroscopy

Additional Equipment

Computed Tomography

Filters

Exam 11: Scatter Control

For a lateral lumbar spine,placing a lead shield on the table behind the area of exposure:

It is safe to assume that the x-ray beam field size and the light field size are exactly the same.

Grid cutoff results in:

The type of grid that includes a channel for the IR to slide into is the:

The air gap technique is a frequently used method for reducing the amount of scatter radiation reaching the IR.

The Moiré effect is also known as the _________ pattern.

The recommended SIDs that can be used with a focused grid is the:

Decreasing collimation (opening up the field size)results in:

Focused grids are more effective than parallel grids in absorbing scatter radiation and allowing transmitted radiation to reach the IR.

When the x-ray beam is angled across the lead strips you have _________ cutoff.

Grids absorb almost all of the scatter radiation and allow all of the transmitted photons to pass through to the IR.

When using automatic collimation,collimating to the anatomy of interest is an unnecessary waste of time;the beam is already collimated.

The volume of tissue irradiated is determined by:

The air gap technique reduces the amount of scatter radiation reaching the IR because:

Which of the following produces the greatest amount of scatter radiation exiting the patient?

A flat piece of lead with a hole in it that has a flange directed toward the patient is a(n):

Grids absorb scatter radiation because the scattered photons:

When the x-ray beam is not lined up with the center of the grid you have _________ cutoff.

The number of lead lines per inch or centimeter is the grid:

Anyone in the room during an exposure must wear a lead apron to absorb the scatter radiation produced in the:

Introduction to the Imaging Sciences

Structure of the Atom

Electromagnetic and Particulate Radiation

X-Ray Circuit

The X-Ray Tube

X-Ray Production

X-Ray Interactions With Matter

Image Production

Image Characteristics

Radiographic Exposure Technique

Image Receptors

Automatic Exposure Control

Image Intensified Fluoroscopy

Additional Equipment

Computed Tomography

Filters