Question 1

Anatomically programmed radiography (APR)is a system in which the radiographer selects

Accepted Answer

A) AEC settings 
B) mAs and kVp settings 
C) preset settings based on the part being imaged 
D) preset settings based on the size of the patient 
A) AEC settings 
B) mAs and kVp settings 
C) preset settings based on the part being imaged 
D) preset settings based on the size of the patient

Question 2

When using AEC,destructive pathologic conditions can cause

Accepted Answer

A) overexposure 
B) underexposure 
C) excessive overexposure 
A) overexposure 
B) underexposure 
C) excessive overexposure

Question 3

Using a higher kVp during an AEC examination results in

Accepted Answer

A) a longer exposure time 
B) a shorter exposure time 
C) increased patient exposure 
D) B and C 
A) a longer exposure time 
B) a shorter exposure time 
C) increased patient exposure 
D) B and C

Question 4

The AEC minimum response time may pose a problem when

Accepted Answer

A) a long exposure time is needed 
B) the patient can easily hold still for the exposure 
C) the patient is unable to hold still for the exposure 
D) All of the above 
A) a long exposure time is needed 
B) the patient can easily hold still for the exposure 
C) the patient is unable to hold still for the exposure 
D) All of the above

Question 5

It is safe to assume that APR settings have been developed to produce the best quality images with the least amount of exposure.

Accepted Answer

A) True 
 B)False

Question 6

With film-screen imaging using AEC,if an AP thoracic spine is imaged with the central ray passing 3 inches to the right of the spine,the density in the area of interest will be __________________ and the exposure time will be ________________________.(Assume all other factors are appropriate. )

Accepted Answer

A) light;long 
B) light;short 
C) appropriate;short 
D) dark;long 
A) light;long 
B) light;short 
C) appropriate;short 
D) dark;long

Question 7

When there is a significant amount of scatter radiation reaching the detector,the exposure time will

Accepted Answer

A) be shorter than needed 
B) be appropriate 
C) be longer than needed 
A) be shorter than needed 
B) be appropriate 
C) be longer than needed

Question 8

Using the plus or minus density controls should be done frequently to produce optimal images with AEC.

Accepted Answer

A) True 
 B)False

Question 9

The shortest exposure time that a radiographic tube with AEC can have is the

Accepted Answer

A) mAs readout 
B) back-up time 
C) minimum response time 
D) density controls 
A) mAs readout 
B) back-up time 
C) minimum response time 
D) density controls

Question 10

The detector(s)selected for an image should be

Accepted Answer

A) the center detector because that is where the central ray is going 
B) the two or three detectors that are covered by the part being imaged 
C) the ones that are superimposed by the anatomic structure of interest 
D) all three so that the system can work properly 
A) the center detector because that is where the central ray is going 
B) the two or three detectors that are covered by the part being imaged 
C) the ones that are superimposed by the anatomic structure of interest 
D) all three so that the system can work properly

Question 11

When using AEC,the exit radiation is converted into an electrical signal.

Accepted Answer

A) True 
 B)False

Question 12

Phototimer AEC detectors are usually exit-type devices because

Accepted Answer

A) the x-rays must exit the patient to get to the detectors 
B) the x-rays must exit the grid to get to the detectors 
C) the x-rays must exit the image receptor to get to the detectors 
A) the x-rays must exit the patient to get to the detectors 
B) the x-rays must exit the grid to get to the detectors 
C) the x-rays must exit the image receptor to get to the detectors

Question 13

With film-screen imaging using AEC,if an AP thoracic spine is imaged using 110 kVp instead of 80 kVp,the density in the area of interest will be __________________ and the image contrast will be ________________________.(Assume all other factors are appropriate. )

Accepted Answer

A) light;lower 
B) dark;higher 
C) the same;lower 
D) the same;higher 
A) light;lower 
B) dark;higher 
C) the same;lower 
D) the same;higher

Question 14

___________________ identify optimal kVp values and alter the mAs for variations in part thickness

Accepted Answer

A) Fixed kVp-variable mAs 
B) Variable kVp-fixed mAs 
C) A and B 
A) Fixed kVp-variable mAs 
B) Variable kVp-fixed mAs 
C) A and B

Question 15

Collimation is not required when AEC is used.

Accepted Answer

A) True 
 B)False

Question 16

The predetermined level of radiation exposure needed to terminate the exposure when using AEC is set by

Accepted Answer

A) the radiologist 
B) the technologist 
C) the equipmentservice personnel 
D) the manufacturer 
A) the radiologist 
B) the technologist 
C) the equipmentservice personnel 
D) the manufacturer

Question 17

If the AEC detectors are not completely covered by the part being imaged and are exposed to primary radiation

Accepted Answer

A) the patient will be overexposed 
B) the exposure will terminate very quickly 
C) the IR will be exposed to the appropriate amount of radiation 
D) none of the above 
A) the patient will be overexposed 
B) the exposure will terminate very quickly 
C) the IR will be exposed to the appropriate amount of radiation 
D) none of the above

Question 18

If the radiographer is doing an upright chest using AEC but the table bucky is selected

Accepted Answer

A) the back-up time will be reached 
B) the patient will be exposed to excessive radiation 
C) the IR will be overexposed 
D) All of the above 
A) the back-up time will be reached 
B) the patient will be exposed to excessive radiation 
C) the IR will be overexposed 
D) All of the above

Question 19

These can be adjusted to increase or decrease the amount of radiation needed to terminate the exposure using AEC

Accepted Answer

A) mAs readout 
B) Back-up time 
C) Minimum response time 
D) Density controls 
A) mAs readout 
B) Back-up time 
C) Minimum response time 
D) Density controls

Question 20

The reason to have a back-up time is to

Accepted Answer

A) protect the patient from excessive exposure 
B) make sure the right mAs is used 
C) keep the tube from excessive heat-loading 
D) A and C 
A) protect the patient from excessive exposure 
B) make sure the right mAs is used 
C) keep the tube from excessive heat-loading 
D) A and C

Anatomically programmed radiography (APR)is a system in which the radiographer selects

When using AEC,destructive pathologic conditions can cause

Using a higher kVp during an AEC examination results in

The AEC minimum response time may pose a problem when

It is safe to assume that APR settings have been developed to produce the best quality images with the least amount of exposure.

With film-screen imaging using AEC,if an AP thoracic spine is imaged with the central ray passing 3 inches to the right of the spine,the density in the area of interest will be and the exposure time will be ______.(Assume all other factors are appropriate. )

When there is a significant amount of scatter radiation reaching the detector,the exposure time will

Using the plus or minus density controls should be done frequently to produce optimal images with AEC.

The shortest exposure time that a radiographic tube with AEC can have is the

The detector(s)selected for an image should be

When using AEC,the exit radiation is converted into an electrical signal.

Phototimer AEC detectors are usually exit-type devices because

With film-screen imaging using AEC,if an AP thoracic spine is imaged using 110 kVp instead of 80 kVp,the density in the area of interest will be and the image contrast will be ______.(Assume all other factors are appropriate. )

___________________ identify optimal kVp values and alter the mAs for variations in part thickness

Collimation is not required when AEC is used.

The predetermined level of radiation exposure needed to terminate the exposure when using AEC is set by

If the AEC detectors are not completely covered by the part being imaged and are exposed to primary radiation

If the radiographer is doing an upright chest using AEC but the table bucky is selected

These can be adjusted to increase or decrease the amount of radiation needed to terminate the exposure using AEC

The reason to have a back-up time is to

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 Production

Image Quality and Characteristics

Radiographic Exposure Technique

Scatter Control

Image Receptors

Image Intensified Fluoroscopy

Additional Equipment

Computed Tomography

Filters

Exam 13: Exposure Technique Selection

Anatomically programmed radiography (APR)is a system in which the radiographer selects

When using AEC,destructive pathologic conditions can cause

Using a higher kVp during an AEC examination results in

The AEC minimum response time may pose a problem when

It is safe to assume that APR settings have been developed to produce the best quality images with the least amount of exposure.

With film-screen imaging using AEC,if an AP thoracic spine is imaged with the central ray passing 3 inches to the right of the spine,the density in the area of interest will be __________________ and the exposure time will be ________________________.(Assume all other factors are appropriate. )

When there is a significant amount of scatter radiation reaching the detector,the exposure time will

Using the plus or minus density controls should be done frequently to produce optimal images with AEC.

The shortest exposure time that a radiographic tube with AEC can have is the

The detector(s)selected for an image should be

When using AEC,the exit radiation is converted into an electrical signal.

Phototimer AEC detectors are usually exit-type devices because

With film-screen imaging using AEC,if an AP thoracic spine is imaged using 110 kVp instead of 80 kVp,the density in the area of interest will be __________________ and the image contrast will be ________________________.(Assume all other factors are appropriate. )

___________________ identify optimal kVp values and alter the mAs for variations in part thickness

Collimation is not required when AEC is used.

The predetermined level of radiation exposure needed to terminate the exposure when using AEC is set by

If the AEC detectors are not completely covered by the part being imaged and are exposed to primary radiation

If the radiographer is doing an upright chest using AEC but the table bucky is selected

These can be adjusted to increase or decrease the amount of radiation needed to terminate the exposure using AEC

The reason to have a back-up time is to

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 Production

Image Quality and Characteristics

Radiographic Exposure Technique

Scatter Control

Image Receptors

Image Intensified Fluoroscopy

Additional Equipment

Computed Tomography

Filters

With film-screen imaging using AEC,if an AP thoracic spine is imaged with the central ray passing 3 inches to the right of the spine,the density in the area of interest will be and the exposure time will be ______.(Assume all other factors are appropriate. )

With film-screen imaging using AEC,if an AP thoracic spine is imaged using 110 kVp instead of 80 kVp,the density in the area of interest will be and the image contrast will be ______.(Assume all other factors are appropriate. )