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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. This is inversely proportional to screen speed
pneumocystogram
the sharper the radiograph
radiographic detail
grid cutoff
2. Pigments tend to decrease the lateral spread of light so there is increased detail
true
true
nucleus pulposis
phosphor layer dyes
3. What are the 2 types of anodes
stationary and rotating
no contrast
fogging
anode
4. Extra pain is also called
cathode
increase scatter
the sharper the radiograph
hyperesthesia
5. The greater the number of electrons released
x-rays
14 x 17
cathode
the higher the mA
6. Screens are classified according to
screen film
speed
FFD
higher mA
7. What specific part of the eye is cloudy with a cataract
anode
lens
collimator
grid cutoff
8. Film with silver crystals that is more sensitive to fluorescent light emitted from intensifying screens than to ionizing radiation
pneumocystogram
screen film
kVp
stationary anode
9. Lung tissue appears black (radiolucent) on a radiograph
effective focal spot
slow film
grey
true
10. Film with: high detail - minimal graininess - increased exposure
14 x 17
slow film
white
10 cm
11. Most commonly used film - compromise between graininess and speed (detail)
light source
medium film
density
cathode
12. Between density and kVp
indirect relationship
radiographic detail
rotating anode
stops peristalsis
13. Is to the left - electrons bounce off it at a 20 degree angle
hypaque
40
anode
alopecia
14. General purpose film - forgiving
cathode
2
wide latitude film
back scatter
15. Gelatinous center of disk - pinches spinal cord to cause herniated disk
phosphor layer
true
nucleus pulposis
afterglow
16. Is the device which restricts (narrows) the beam of x-rays as they leave the x-ray machine
4 ft
true
collimator
true
17. In the dark room - the safe light (red light) needs to be at least how far away from the loading bench
false
wide latitude film
4 ft
rapidly dividing
18. They don't move - they're found in dental units and portable units - cannot withstand the heat produced from large units
true
3cc/#
black
stationary anode
19. We should always try and stay How many feet from our x-ray machine
screen film
6 ft
thoracic(caudal) and lumbar
somatic damage
20. What type of film has no screens or film cassettes
40
non-screen
quantum mottle
focal spot
21. Positive contrast agents appear what color on a radiograph
reflective layer
unexposed AgBr
white
latent image
22. A grid must be used on the chest if it's 11cm thick
non-screen
false
diskospondylitis
fluoroscopy
23. Areas on film that should be black but come out grey - due to storage
false
fast
heel effect
fogging
24. If the kVp is increased by 15% - the density is doubled
milliamperage
screens (phosphor layer)
lens
15% rule for kVp
25. Calcium tungstate - rare earth elements
reflective layer
phosphor type
rapidly dividing
grid cutoff
26. If you use an mA of 300 - What time fraction must i use to get an mAs of 10?
1/30
direct relationship
cathode
increase scatter
27. A clear protective layer on radiographic film
focal film distance
kVp
5
supercoat
28. Types of cell damage
genetic and somatic
adjustable lead shutters
thoracic(caudal) and lumbar
somatic damage
29. Lead equivalent for apron
0.25mm
lens
grid cutoff
milliamperage
30. Growth - gonadal - neoplastic - and metabolically active cells are what kind of cells
cathode and anode
rapidly dividing
0.25mm
anode
31. X-ray machines come with a set one - we cannot adjust it
radiographic detail
false
highest mA and smallest time fraction
focal spot
32. Must change if the FFD changes
grey
increase density
mAs
no contrast
33. DJD is also called
radiographic detail
grid cutoff
fast film
arthritis
34. These cells are the most sensitive to radiation
osteomyelitis
idiopathic
alopecia
rapidly dividing
35. Dislocations or separations
santes' rule
mAs
false
luxations
36. 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)
0.5mm
focal spot
calcium tungstate
paresis
37. An abdominal radiograph should be taken at the peak of expiration
diskospondylitis
x-rays
grid
true
38. What is the term for an unknown cause
the sharper the radiograph
non-screen film
idiopathic
pneumocystogram
39. Extra vertebrae - scoliosis - fused vertebrae are all examples of
abnormalities
electrons
kVp
inverse square law
40. Negative contrast agents appear what color on a radiograph
black
rapidly dividing
fluoroscopy
anode
41. Bone - lymphatic cells - epitheilial - and hemopoietic cells are also what kind of cell?
false
screens (phosphor layer)
sensitive cells
screens (phosphor layer)
42. Loss of movement in legs (front and/or back)
paralysis
true
grid efficiency
rapidly dividing
43. What is the name for the cartilage flap in the shoulder joint that has broken free and is floating around in the joint fluid
false
caudal border of scapula
calcium tungstate
joint mouse
44. If barium leaks into the abdomen or lungs - it can cause what
annulus fibrosis
NYS Public Health Law #225
inflammation an granuloma
false
45. This stage of pregnancy is the most dangerous for the fetus
kVp
slow
santes' rule
first trimester
46. If there's bone in the way of an x-ray -. those parts would be
non-screen
whiter
0.25mm
anode
47. This is caused by mutations in gonadal cells - not seen until offspring are produced - mutations are not always bad
genetic damage
aluminum
highest mA and smallest time fraction
14 x 17
48. The x-ray machine we've been using has a rotating anode
x-rays
film cassette
true
grid cutoff
49. Weakness
stops peristalsis
narrow latitude film
0.5mm
paresis
50. Monitors personal exposure to radiation
effective focal spot
heel effect
slow
dosimeter