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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. What type of film has no screens or film cassettes
non-screen
grid cutoff
quantum mottle
paralysis
2. What specific part of the eye is cloudy with a cataract
genetic damage
hyperesthesia
lens
the sharper the radiograph
3. Is on the anode and is angled at approximately 20 degrees from vertical
spondylosis
screen film
focal spot
silver halide
4. General purpose film - forgiving
erythema
double contrast
wide latitude film
5
5. Refers to the 'blackness' of a radiograph
black
40
radiographic detail
density
6. With this procedure - no x-ray film is involved at all
inflammation an granuloma
fluoroscopy
sensitive cells
movement
7. Has a filament made of tungsten - due to the high melting point
lens
cathode and anode
false
grid cutoff
8. A clear protective layer on radiographic film
mAs
false
reflective layer
supercoat
9. If there's no object in the way of an x-ray - the picture would be
cervical
black
true
reflective layer
10. Lead equivalent for apron
0.25mm
radiograph
supercoat
15
11. Increase developing time and temp of developing fluid
40
wobblers syndrome
increase density
whiter
12. DJD is also called
white
radiographic detail
arthritis
potter-bucky diagram
13. This stage of pregnancy is the most dangerous for the fetus
first trimester
cathode
secondary
cathode and anode
14. Has a negative charge
non-screen film
cathode
phosphor layer dyes
adjustable lead shutters
15. With the heel effect - more x-rays tend to be produced toward the cathode end
true
paralysis
decrease scatter radiation
2.5
16. Is the measurement for the maximum energy available at that setting
15
screen film
calcium tungstate
peak kilovoltage
17. When.....collide with the anode - 99% of energy is released in the form of heat - and 1% of energy is in the form of x-rays
electrons
slow film
milliamperage
kVp or mAs
18. The greater the number of electrons released
heel effect
cathode
the higher the mA
focal spot
19. An abdominal radiograph should be taken at the peak of expiration
true
clinical signs
kVp
false
20. Faster screens/less detail; slower screens/more detail
large crystals - small crystals
medium film
grid cutoff
white
21. Are produced when electrons are slowed down or stopped by atoms in the target area where they are aimed
decrease scatter radiation
unexposed AgBr
non-screen
x-rays
22. What gives off 4 times the amount of light photons than does the calcium tungstate (it gives off green light)
fixer
white
rare earth elements
false
23. With what kind of typical film do we get 95% exposure due to visible light and 5% is due to the x-rays directly
collimator
diskospondylitis
screen film
white
24. This is caused by mutations in gonadal cells - not seen until offspring are produced - mutations are not always bad
high contrast
white
phosphor layer dyes
genetic damage
25. The back of the cassette is made of lead to decrease....
back scatter
no contrast
high contrast
fast film
26. What must have little or no 'afterglow'
screens (phosphor layer)
luxations
anode
collimator
27. Must be radiolucent
film cassette
phosphor type
contrast
non-screen
28. Increased thickness of this leads to increased x-ray absorption and increased visible light emission from the crystals
contrast
0.25mm
phosphor layer
peak kilovoltage
29. Tilting of the tube or grid is one reason for
grid efficiency
afterglow
grid cutoff
whiter
30. When doing a lateral radiograph of the thorax/chest - the x-ray beam should be centered over what specific anatomical landmark
supercoat
joint mouse
rapidly dividing
caudal border of scapula
31. With the heel effect - more x-rays tend to be in the beam toward this end of the tube
latent image
cathode
diskospondylitis
line focus principle
32. Measures the power of penetrability (quality) of the x-rays produced
decrease scatter radiation
kVp
screen film
medium or par
33. The x-ray machine we've been using has a rotating anode
medium film
kVp
non-screen
true
34. Body cells affected - damage seen during lifetime of creature - can be immediate or cummulative
somatic damage
density
lead cone and adjustable lead shutters
non-screen
35. Crystals + x-rays = ?
cathode
medium film
visible light
milliamperage
36. Within the collimator outlines just how much is collimated
lead cone and adjustable lead shutters
genetic damage
nucleus pulposis
light source
37. For bladder cystography - we use what contrast material instead of barium
nucleus pulposis
hypaque
unexposed AgBr
large crystals - small crystals
38. The smaller the focal spot
cervical
cathode and anode
the sharper the radiograph
grid cutoff
39. Between density and mAs
non-screen
direct relationship
true
grid cutoff
40. Does move - has disks that rotate at high speeds - this helps spread out the heat that's produced as the electrons hit the focal spot
calcium tungstate
increase scatter
rotating anode
lines per centimeter
41. As this increases - the intensity of the x-ray beam decreases - so the beam intensity increases - and the mAs must decrease to compensate
FFD
screens (phosphor layer)
lines per centimeter
increase density
42. Film with: ultra speed - grainier image - less exposure needed
joint mouse
fast film
decrease scatter radiation
1/30
43. Radiograph of a dogs skeleton has a long scale of contrast
visible light
2.5
phosphor layer dyes
false
44. Incorrect grid focus is one reason for
grid cutoff
short scale of contrast
NYS Public Health Law #225
reflective layer
45. If the kVp is increased by 15% - the density is doubled
line focus principle
screens (phosphor layer)
adjustable lead shutters
15% rule for kVp
46. This pertains to the size of the electron cloud and thus directly to the number of x-ray produced
NYS Public Health Law #225
film cassette
aluminum
mAs
47. If you use an mA of 300 - What time fraction must i use to get an mAs of 10?
grid focus
1/30
afterglow
medium or par
48. Legally - a non-pregnant woman is required to hold a HBC dog for radiographs in NYS
wobblers syndrome
kVp or mAs
false
anode
49. Less forgiving - high contrast - cannot tolerate changes in exposure or processing
reflective layer
mAs
narrow latitude film
secondary
50. Grid helps reduce the amount of......
focal spot
increase density
scatter radiation
rapidly dividing