LRA 211 FINAL EXAM QUESTIONS
AND ANSWERS
The primary purpose of the glass or metal enclosure is to - Answer- maintain a vacuum
within the tube
A radiographer image that is too light as _____ to visualize the anatomic structure -
Answer- Excessive brightness
Scatter radiation may - Answer- All of these
-expose people near the patient
- increase patient exposure
- contributes no useful information if it strikes the image receptor
Which of the following is an example of an image receptor - Answer- Film screen and
digital
Radiation interacting with air is more likely to be _____________, resulting in that area
of the image being darker. - Answer- Transmitted
Radiographic contrast - Answer- Allows visibility of anatomic structures
The ability of the imagine system to distinguish between small objects that attenuate the
x-ray beam similarly is known as - Answer- Contrast resolution
The area of the envelope where x-ray should exit the tube is - Answer- Target window
Glass enclosures are typically made of borosilicate glass (Pyrex) because: - Answer- It
is very heat resistant
The protective tube housing is lined with - Answer- Lead
The various shades of gray or brightness created on the radiographic image - Answer-
All of these
Are present because of differential absorption
Makes the anatomic structures visible
Represents the radiotin that was absorbed or transmitted
The effect of coherent scatter interactions on image quality - Answer- Is minimal
As the wave's frequency increases, the wavelength: - Answer- Decreases
, Frequency is typically measured in - Answer- Hertz
The device that receives the radiation after it exits the patient is the - Answer- Image
receptor
The amount of light emitted from the display monitor is - Answer- Brightness
The cathode includes the - Answer- Filaments and focusing cup
The earliest atomic theory based on as arrangement similar to the solar system is
attributed to - Answer- Rutherford
The portion of the induction motor that is outside the tube enclosure is the - Answer-
Stator
Filtration placed in the path of the x-ray beam - Answer- absorbs low energy photons
Proctective apparel is often made of lead because it - Answer- Has a high atomic
number
The negative end of the x-ray tube is the - Answer- Cathode
Which of the following factors affect beam quantity - Answer- All of these
kVp
Distance
Filtration
Soultions, x-ray tube leaking radiation can be no more than - Answer- 100 mR per hour
at a distance one meter
Material like bone is considered - Answer- Radiopaque
The majority of the x-ray photons produced are - Answer- Brems photons
Increase in the image size of an object compared with its true or actual size is called -
Answer- Size distortion
After a photoelectric interaction, the incident photon - Answer- loses all of its energy and
no longer exists
X-ray are produced - Answer- Using fast moving electrons
Secondary x-ray photons are the result of - Answer- Compton and photoelectric
interactions
AND ANSWERS
The primary purpose of the glass or metal enclosure is to - Answer- maintain a vacuum
within the tube
A radiographer image that is too light as _____ to visualize the anatomic structure -
Answer- Excessive brightness
Scatter radiation may - Answer- All of these
-expose people near the patient
- increase patient exposure
- contributes no useful information if it strikes the image receptor
Which of the following is an example of an image receptor - Answer- Film screen and
digital
Radiation interacting with air is more likely to be _____________, resulting in that area
of the image being darker. - Answer- Transmitted
Radiographic contrast - Answer- Allows visibility of anatomic structures
The ability of the imagine system to distinguish between small objects that attenuate the
x-ray beam similarly is known as - Answer- Contrast resolution
The area of the envelope where x-ray should exit the tube is - Answer- Target window
Glass enclosures are typically made of borosilicate glass (Pyrex) because: - Answer- It
is very heat resistant
The protective tube housing is lined with - Answer- Lead
The various shades of gray or brightness created on the radiographic image - Answer-
All of these
Are present because of differential absorption
Makes the anatomic structures visible
Represents the radiotin that was absorbed or transmitted
The effect of coherent scatter interactions on image quality - Answer- Is minimal
As the wave's frequency increases, the wavelength: - Answer- Decreases
, Frequency is typically measured in - Answer- Hertz
The device that receives the radiation after it exits the patient is the - Answer- Image
receptor
The amount of light emitted from the display monitor is - Answer- Brightness
The cathode includes the - Answer- Filaments and focusing cup
The earliest atomic theory based on as arrangement similar to the solar system is
attributed to - Answer- Rutherford
The portion of the induction motor that is outside the tube enclosure is the - Answer-
Stator
Filtration placed in the path of the x-ray beam - Answer- absorbs low energy photons
Proctective apparel is often made of lead because it - Answer- Has a high atomic
number
The negative end of the x-ray tube is the - Answer- Cathode
Which of the following factors affect beam quantity - Answer- All of these
kVp
Distance
Filtration
Soultions, x-ray tube leaking radiation can be no more than - Answer- 100 mR per hour
at a distance one meter
Material like bone is considered - Answer- Radiopaque
The majority of the x-ray photons produced are - Answer- Brems photons
Increase in the image size of an object compared with its true or actual size is called -
Answer- Size distortion
After a photoelectric interaction, the incident photon - Answer- loses all of its energy and
no longer exists
X-ray are produced - Answer- Using fast moving electrons
Secondary x-ray photons are the result of - Answer- Compton and photoelectric
interactions
