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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 spinal problem do doberman's get
the sharper the radiograph
supercoat
wobblers syndrome
grid cutoff
2. AgBr + light =
grid cutoff
potter-bucky diagram
screen film
spondylosis
3. Distance from the grid to the x-ray tube (36-40 inches)
higher mA
focal spot
5
grid focus
4. A clear protective layer on radiographic film
cathode
supercoat
erythema
inversely proportional
5. If the kVp is too low
high contrast
no contrast
kVp
FFD
6. Has a positive charge
anode
visible light
5
diskospondylitis
7. Film that is more sensitive to ionizing radiation than to fluorescent light
secondary
collimator
non-screen film
grid focus
8. Types of grids
focused and unfocused or parallel
narrow latitude film
black
peak kilovoltage
9. Most commonly used film - compromise between graininess and speed (detail)
diskospondylitis
medium or par
medium film
silver halide
10. What is the name for the cartilage flap in the shoulder joint that has broken free and is floating around in the joint fluid
joint mouse
wide latitude film
medium or par
kVp
11. When more electrons hit the focal spot on the anode
radiograph
screens (phosphor layer)
15
more x-rays produced
12. Another result of the 20 degree angling
x-rays
slow
fluoroscopy
heel effect
13. Between density and mAs
thoracic(caudal) and lumbar
screens (phosphor layer)
screen film
direct relationship
14. What is the term for the spotty appearance on the film due to the large crystals in the screens
quantum mottle
luxations
5
sensitive cells
15. Rotating anode
6 ft
decrease scatter radiation
genetic damage
aluminum
16. If the kVp is increased by 15% - the density is doubled
direct relationship
potter-bucky diagram
15% rule for kVp
screen film
17. Longer wavelengths of electromagnetic radiation have more penetrating power
inflammation an granuloma
cathode
false
14 x 17
18. With what kind of typical film do we get 95% exposure due to visible light and 5% is due to the x-rays directly
true
screen film
AgBr
grid cutoff
19. When this is exposed to x-rays - it will absorb photons (quanta) and give off photons of visible light which the film is sensitive to (give off blue light)
false
milliamperage
phosphor layer
calcium tungstate
20. There are......intensifying screens within a cassette
focal spot
focal spot
2
14 x 17
21. If the x-ray tube is not 36-40 inches from the grid - this is called the
slow
grid cutoff
direct relationship
focal spot
22. Screen speed is.....to the exposure required to cause it to flouresce
inversely proportional
clinical signs
film cassette
narrow latitude film
23. Why do we not give atropine with a contrast radiograph
5
stops peristalsis
scatter radiation
true
24. Must be radiolucent
pneumocystogram
film cassette
lines per centimeter
hyperesthesia
25. The electrical current sent through the filament to cause this electron release is called
grid focus
Maximum Permissible Dose
milliamperage
luxations
26. Animal has broken femur - it's ideal to have How many radiographs for diagnostic purposes
decrease scatter radiation
grid
2
increase scatter
27. General purpose film - forgiving
false
kVp
wide latitude film
focal spot
28. What must have little or no 'afterglow'
density
screens (phosphor layer)
black
true
29. The back of the cassette is made of lead to decrease....
phosphor layer
5
potter-bucky diagram
back scatter
30. What type of bone tumors started elsewhere and spread to the location it was found
secondary
non-screen film
mAs
non-screen
31. When a body part is greater than or equal to.....you should use a grid
true
black
primary
10 cm
32. Film with: high detail - minimal graininess - increased exposure
stationary anode
wobblers syndrome
white
slow film
33. To double the density
unexposed AgBr
inverse square law
aluminum
double mAs
34. Can cause damage to living cells through the process of excitation or ionization of electrons in the orbits around atoms
x-rays
focused and unfocused or parallel
somatic damage
genetic damage
35. With this procedure - no x-ray film is involved at all
genetic damage
grid
peak kilovoltage
fluoroscopy
36. The effective focal spot is approximately 1/3 the size of the actual focal spot
cathode
heel effect
true
contrast
37. The smaller the focal spot
14 x 17
the sharper the radiograph
short scale of contrast
grid cutoff
38. What is one of the most common area of occurance for spinal problems (15% dobermans)
focal spot
spondylosis
no contrast
cervical
39. Increase developing time and temp of developing fluid
screen film
focal spot
white
increase density
40. If there's far or muscle in the way of an x-ray - those parts would be
1/30
decrease scatter radiation
0.25mm
grey
41. Give a 25% barium solution for upper GI series - and give At what dose?
true
cathode
dosimeter
3cc/#
42. When processing film - the black areas are made of
metallic silver
15
phosphor type
highest mA and smallest time fraction
43. Film with silver crystals that is more sensitive to fluorescent light emitted from intensifying screens than to ionizing radiation
screen film
false
focal film distance
15% rule for kVp
44. What is the difference between fluoroscopy and a regular radiograph
focal spot
white and black are reversed
unexposed AgBr
the sharper the radiograph
45. If barium leaks into the abdomen or lungs - it can cause what
inflammation an granuloma
electrons
cassette
calcium tungstate
46. Lead equivalent for apron
40
intussusception
decrease scatter radiation
0.25mm
47. These screens are high speed - they decrease exposure - poorer detail - able to penetrate thicker areas
fast
focused and unfocused or parallel
direct relationship
increase density
48. Is on the anode and is angled at approximately 20 degrees from vertical
line focus principle
back scatter
focal spot
double contrast
49. Is the device which restricts (narrows) the beam of x-rays as they leave the x-ray machine
grid focus
collimator
heel effect
genetic damage
50. Refers to the 'blackness' of a radiograph
density
10 cm
latent image
true