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Test your basic knowledge |
Radiology
Start Test
Study First
Subjects
:
health-sciences
,
radiology
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Tilting of the tube or grid is one reason for
sensitive cells
FFD
grid cutoff
quantum mottle
2. Types of cell damage
genetic and somatic
stationary anode
non-screen
alopecia
3. The effective focal spot is only 1/3 the size of the actual focal spot. this is called the
intensifying screens
secondary
14 x 17
line focus principle
4. X-ray machines come with a set one - we cannot adjust it
non-screen
dosimeter
focal spot
decrease scatter radiation
5. Increase what value to penetrate thick body parts
kVp
cathode and anode
pneumocystogram
latent image
6. What needs to have high levels of x-ray to light conversion with the correct energy and color for the type of film used
movement
nucleus pulposis
screens (phosphor layer)
false
7. Positive contrast agents appear what color on a radiograph
true
first trimester
false
white
8. To double the density
indirect relationship
cathode
double mAs
15 cm
9. Lung tissue appears black (radiolucent) on a radiograph
0.25mm
6 ft
true
joint mouse
10. With the heel effect - more x-rays tend to be in the beam toward this end of the tube
mAs
visible light
10 cm
cathode
11. An abdominal radiograph should be taken at the peak of expiration
light source
diskospondylitis
direct relationship
true
12. Most commonly used film - compromise between graininess and speed (detail)
medium film
spondylosis
grid cutoff
anode
13. The tendency of a luminescent compound to continue to give off light after x-radiation has stopped
film cassette
afterglow
non-screen
focal spot
14. Is responsible for the number or quantity of x-rays
double contrast
joint mouse
spondylosis
mAs
15. Has a filament made of tungsten - due to the high melting point
screen film
cathode and anode
5
phosphor type
16. Film with silver crystals that is more sensitive to fluorescent light emitted from intensifying screens than to ionizing radiation
caudal border of scapula
screen film
paresis
whiter
17. We ideally take a radiograph of the abdomen at the peak of inspiration
anode
double contrast
visible light
false
18. Gelatinous center of disk - pinches spinal cord to cause herniated disk
milliamperage
the sharper the radiograph
screen film
nucleus pulposis
19. Dislocations or separations
luxations
cathode
intensifying screens
true
20. A type of electromagnetic radiation which have a shorter wavelength than visible light
x-rays
more x-rays produced
false
stationary and rotating
21. The mAs has to do with the power of the x-rays produced
nucleus pulposis
mAs
wide latitude film
false
22. These crystals will turn white/clear when processing film
grid cutoff
electrons
grid cutoff
unexposed AgBr
23. Bone - lymphatic cells - epitheilial - and hemopoietic cells are also what kind of cell?
sensitive cells
15 cm
screen film
calcium tungstate
24. Between density and kVp
indirect relationship
mAs
fogging
white and black are reversed
25. The back of the cassette is made of lead to decrease....
back scatter
anode
whiter
white
26. Means more electrons will be released from the filament and directed at the anode
higher mA
first trimester
decrease scatter radiation
screen film
27. These screens have increased definition/detail - need to have increased radiation exposure
true
intussusception
grid efficiency
slow
28. This stage of pregnancy is the most dangerous for the fetus
genetic damage
true
rare earth elements
first trimester
29. Is the electrical current that heats the filament
grid focus
false
milliamperage
unexposed AgBr
30. The type of collimator that we have here
back scatter
more x-rays produced
long scale of contrast
adjustable lead shutters
31. Is determined by the ratio of the height of the lead strips to the distance between them
grid
grid efficiency
metallic silver
more light
32. Has a negative charge
mAs
AgBr
cathode
stops peristalsis
33. Radiograph of a dogs skeleton has a long scale of contrast
false
adjustable lead shutters
screen film
grid cutoff
34. Redness of the skin
true
whiter
erythema
fluoroscopy
35. The greater the number of electrons released
genetic damage
milliamperage
slow
the higher the mA
36. Longer wavelengths of electromagnetic radiation have more penetrating power
more light
speed
false
annulus fibrosis
37. When processing film - the black areas are made of
metallic silver
santes' rule
long scale of contrast
higher mA
38. MAs for ANY part - when using a grid 3x= ?
joint mouse
15
metallic silver
true
39. KVp=(2x thickness of body part in cm) + 40
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183
40. When more electrons hit the focal spot on the anode
screens (phosphor layer)
wobblers syndrome
more x-rays produced
inversely proportional
41. Increase mAs and kVp in order to...
0.5mm
narrow latitude film
double contrast
increase density
42. If the grid is stationary - more lines that are finer are less apt to show up on a radiograph - this is called....
abnormalities
reflective layer
clinical signs
lines per centimeter
43. Has a positive charge
annulus fibrosis
anode
slow
joint mouse
44. When doing a lateral radiograph of the thorax/chest - the x-ray beam should be centered over what specific anatomical landmark
caudal border of scapula
true
true
intussusception
45. As this increases - the intensity of the x-ray beam decreases - so the beam intensity increases - and the mAs must decrease to compensate
line focus principle
FFD
inverse square law
anode
46. The picture formed after the film has been exposed to x-rays and then processed into a visible image.
sensitive cells
mAs
radiograph
6 ft
47. Is only 1/3 the size of the actual focal spot
3cc/#
light source
effective focal spot
non-screen film
48. If the kVp is too high
aluminum
increase scatter
unexposed AgBr
grid cutoff
49. This is caused by mutations in gonadal cells - not seen until offspring are produced - mutations are not always bad
long scale of contrast
focused and unfocused or parallel
genetic damage
slow
50. Areas on film that should be black but come out grey - due to storage
fogging
direct relationship
decrease scatter radiation
stationary and rotating