General radiography quiz Flashcards
In respect of diagnostic radiation beam absorbtion;
- Bone absorbs less energy than soft tissue
- Bone has a higher atomic number than soft tissue
- Radiation beam intensity is reduced by bone
Statements two and three are correct
2. Bone has a higher atomic number than soft tissue
- Radiation beam intensity is reduced by bone
When a radiation beam passes through matter the attenuation of the beam depends upon which ONE of the following;
A. Density of the material and incident beam energy only
B. Thickness of matter and density of the material only
C. Incident beam energy, thickness of matter and density of the material
D. Incident beam energy and thickness of matter only
C. Incident beam energy, thickness of matter and density of the material
For one mark. With reference to increasing the kV selected for exposure, which one of the following statements is correct?
a.
Increases the absorbed dose
b.
Increases image contrast
c.
Increases the penetrating power of the radiation beam.
d.
Decreases the penetrating power of the radiation beam.
Increases the penetrating power of the radiation beam.
The practice of holding the exposure button in the “Prep” is accomplished by [pushing the button halfway down]. This allows for the [anode to be at full rotational speed]. This may be used when a patient [is unable to hold their breath]. It is a useful skill as it allows you to [expose precisely when the patient is ready].
The practice of holding the exposure button in the “Prep” is accomplished by [pushing the button half way down]. This allows for the [anode to be at full rotational speed]. This may be used when a patient [is unable to hold their breathe]. It is a useful skill as it allows you to [expose precisely when the patient is ready].
Which type of anode might be found in an intra-oral dental x-ray unit?
Select one:
a.
Rotating
b.
Aluminium
c.
Mobile
d.
Stationary
e.
Molybdenum
d.
Stationary
Inside the tube insert is
Select one:
Nitrogen
a vacuum
Water
Air
a vacuum
