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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. Distance from the grid to the x-ray tube (36-40 inches)
direct relationship
grid focus
stationary anode
higher mA
2. Loss of movement in legs (front and/or back)
cathode filament
15
paralysis
santes' rule
3. Outer layer of disk ( dries out and cracks and causes disk to herniate)
indirect relationship
annulus fibrosis
3cc/#
radiographic detail
4. The 2 types of collimators are
lead cone and adjustable lead shutters
rotating anode
40
diskospondylitis
5. Must increase.....to compensate for x-ray absorption by the grid. (we triple our mAs)
SOP
kVp or mAs
grid cutoff
highest mA and smallest time fraction
6. Grid helps reduce the amount of......
collimator
the sharper the radiograph
false
scatter radiation
7. Most commonly used film - compromise between graininess and speed (detail)
medium film
focal spot
cervical
nucleus pulposis
8. Is located in a focusing cup made of molybdenum which has a high melting point and helps to direct the electrons produced toward the cathode
sensitive cells
scatter radiation
intensifying screens
cathode filament
9. Types of cell damage
non-screen
spondylosis
genetic and somatic
fast film
10. Dislocations or separations
luxations
kVp or mAs
adjustable lead shutters
back scatter
11. The focused grid is upside down - is one reason for
wobblers syndrome
primary
phosphor layer dyes
grid cutoff
12. Film with silver crystals that is more sensitive to fluorescent light emitted from intensifying screens than to ionizing radiation
phosphor layer
screen film
milliamperage
15% rule for kVp
13. What specific part of the eye is cloudy with a cataract
secondary
black
no contrast
lens
14. 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
white and black are reversed
latent image
15 cm
15. Extra vertebrae - scoliosis - fused vertebrae are all examples of
metallic silver
abnormalities
the higher the mA
latent image
16. AgBr + light =
slow film
screen film
heel effect
0.25mm
17. Screen speed is.....to the exposure required to cause it to flouresce
radiograph
inversely proportional
more light
the sharper the radiograph
18. With the heel effect - more x-rays tend to be produced toward the cathode end
screens (phosphor layer)
screen film
true
slow
19. For bladder cystography - we use what contrast material instead of barium
screen film
fast
hypaque
false
20. Increase mAs and kVp in order to...
increase density
indirect relationship
non-screen film
genetic damage
21. Tilting of the tube or grid is one reason for
higher mA
highest mA and smallest time fraction
joint mouse
grid cutoff
22. KVp=(2x thickness of body part in cm) + 40
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23. X-ray machines come with a set one - we cannot adjust it
0.25mm
more x-rays produced
focal spot
true
24. What type of film has the x-rays directly cause the latent image to be formed
NYS Public Health Law #225
kVp
0.25mm
non-screen
25. Hairloss or baldness
alopecia
direct relationship
calcium tungstate
2
26. Body cells affected - damage seen during lifetime of creature - can be immediate or cummulative
cassette
screen film
iodine
somatic damage
27. Is the electrical current that heats the filament
5
milliamperage
fogging
peak kilovoltage
28. Is responsible for the number or quantity of x-rays
latent image
mAs
electrons
increase density
29. The layer of the film where the action occurs
film cassette
large crystals - small crystals
non-screen
AgBr
30. What type of film has no screens or film cassettes
reflective layer
non-screen
milliamperage
highest mA and smallest time fraction
31. When a body part is greater than or equal to.....you should use a grid
10 cm
false
potter-bucky diagram
40
32. Is only 1/3 the size of the actual focal spot
true
metallic silver
phosphor layer dyes
effective focal spot
33. On a lateral view of the chest the aorta is dorsal to the caudal vena cava
true
grid cutoff
latent image
caudal border of scapula
34. If the thorax is greater than or equal to....you should use a grid
15 cm
true
wobblers syndrome
screen film
35. Improper centering of grid is one reason for
grid cutoff
narrow latitude film
paresis
5
36. Has a negative charge
fast
cathode
large crystals - small crystals
milliamperage
37. This is used to take 'real-time' radiographs - used a lot in horses
2.5
true
grid cutoff
fluoroscopy
38. What type of films need a lot more x-ray exposure and more time to expose them
nucleus pulposis
0.25mm
non-screen
collimator
39. If barium leaks into the abdomen or lungs - it can cause what
FFD
hyperesthesia
3cc/#
inflammation an granuloma
40. Sheets of luminescent phosphor crystals bound together and mounted on a cardboard or plastic base
intensifying screens
afterglow
Maximum Permissible Dose
potter-bucky diagram
41. The exact area of the anode that the electrons hit
focal spot
stationary and rotating
somatic damage
rotating anode
42. A grid must be used on the chest if it's 11cm thick
high contrast
contrast
short scale of contrast
false
43. If there's no object in the way of an x-ray - the picture would be
black
first trimester
0.5mm
anode
44. If there's metal in the way of an x-ray - than no x-rays will get through and that part would be
white
primary
0.5mm
non-screen
45. Sheets of luminescent phorphor crystals on a cardboard or plastic base
white and black are reversed
scatter radiation
erythema
intensifying screens
46. Less forgiving - high contrast - cannot tolerate changes in exposure or processing
iodine
decrease scatter radiation
narrow latitude film
10 cm
47. Increase developing time and temp of developing fluid
hypaque
increase density
14 x 17
2
48. Safe Operating Procedures
0.5mm
genetic damage
SOP
grid cutoff
49. Weakness
decrease scatter radiation
non-screen
paresis
inverse square law
50. The type of collimator that we have here
adjustable lead shutters
effective focal spot
2.5
grid efficiency
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