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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. Has a negative charge
cathode
10
somatic damage
pneumocystogram
2. A type of electromagnetic radiation which have a shorter wavelength than visible light
fogging
NYS Public Health Law #225
x-rays
latent image
3. White against black - like the x-ray of a plain skeleton
radiograph
Maximum Permissible Dose
short scale of contrast
caudal border of scapula
4. Has a filament made of tungsten - due to the high melting point
first trimester
cathode and anode
screen film
density
5. We should always try and stay How many feet from our x-ray machine
true
potter-bucky diagram
density
6 ft
6. If there's no object in the way of an x-ray - the picture would be
mAs
black
electrons
x-rays
7. 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
mAs
calcium tungstate
caudal border of scapula
8. Calcium 'bridges' between adjacent vertebrae
increase scatter
spondylosis
grid cutoff
fogging
9. Grid helps reduce the amount of......
stationary and rotating
lines per centimeter
false
scatter radiation
10. A clear protective layer on radiographic film
x-rays
supercoat
secondary
phosphor layer
11. What needs to have high levels of x-ray to light conversion with the correct energy and color for the type of film used
annulus fibrosis
paresis
screens (phosphor layer)
fogging
12. Dislocations or separations
luxations
highest mA and smallest time fraction
true
true
13. The greater the number of electrons released
the higher the mA
spondylosis
0.5mm
higher mA
14. Film with: ultra speed - grainier image - less exposure needed
inverse square law
movement
screen film
fast film
15. What is one of the most common areas of occurance for spinal problems ( 85% dachshunds)
unexposed AgBr
movement
thoracic(caudal) and lumbar
false
16. Is on the anode and is angled at approximately 20 degrees from vertical
10 cm
focal spot
grid focus
annulus fibrosis
17. In which processing solution do unionized (green) AgBr crystals get removed from the film
focal spot
fixer
stationary anode
luxations
18. A layer of intensifying screen that reflects the light from the phosphor layer toward the film
reflective layer
focal spot
non-screen film
dosimeter
19. The smaller the focal spot
the sharper the radiograph
screens (phosphor layer)
true
focal film distance
20. Bone infection - also known as spondylitis
osteomyelitis
increase scatter
anode
0.25mm
21. Is the source of electrons
cathode
film cassette
genetic and somatic
non-screen
22. A device that moves the grid back and forth under the table. it helps to prevent grid lines from showing
anode
nucleus pulposis
high contrast
potter-bucky diagram
23. Slowly growing dividing cells are the most sensitive to the effects of ionizing radiaton
false
double mAs
5
fixer
24. NYSVMS Facility Accreditation Standards
non-screen
non-screen
true
NYS Public Health Law #225
25. Monitors personal exposure to radiation
dosimeter
the higher the mA
luxations
phosphor layer
26. Safe Operating Procedures
decrease scatter radiation
pneumocystogram
SOP
film cassette
27. Is determined by the ratio of the height of the lead strips to the distance between them
luxations
grid
grid efficiency
cathode
28. Lead equivalent for apron
0.25mm
focal spot
light source
clinical signs
29. The effective focal spot is approximately 1/3 the size of the actual focal spot
visible light
rapidly dividing
true
false
30. What type of film has no screens or film cassettes
non-screen
grid cutoff
large crystals - small crystals
cathode
31. Pigments tend to decrease the lateral spread of light so there is increased detail
mAs
caudal border of scapula
phosphor layer dyes
15 cm
32. The type of collimator that we have here
AgBr
diskospondylitis
adjustable lead shutters
2.5
33. What is the term for an unknown cause
wide latitude film
fluoroscopy
idiopathic
white
34. When processing film - the black areas are made of
increase scatter
metallic silver
rapidly dividing
FFD
35. Is the most common artifact in radiography
movement
cathode and anode
more x-rays produced
density
36. With what kind of typical film do we get 95% exposure due to visible light and 5% is due to the x-rays directly
screen film
slow
15% rule for kVp
lens
37. If the kVp is increased by 15% - the density is doubled
screens (phosphor layer)
15% rule for kVp
10 cm
kVp or mAs
38. The 2 types of collimators are
medium or par
cathode
lead cone and adjustable lead shutters
cathode filament
39. Less forgiving - high contrast - cannot tolerate changes in exposure or processing
reflective layer
narrow latitude film
false
focused and unfocused or parallel
40. Amount of radiation a person can recieve in a calendar year
4 ft
10 cm
peak kilovoltage
Maximum Permissible Dose
41. Must be radiolucent
peak kilovoltage
lens
film cassette
slow
42. Increase mAs and kVp in order to...
inverse square law
potter-bucky diagram
4 ft
increase density
43. MAs for ANY part - when using a grid 3x= ?
15
increase scatter
radiograph
heel effect
44. Increase what value to penetrate thick body parts
kVp or mAs
thoracic(caudal) and lumbar
scatter radiation
kVp
45. Rotating anode
peak kilovoltage
afterglow
decrease scatter radiation
long scale of contrast
46. Between density and kVp
indirect relationship
increase density
long scale of contrast
mAs
47. They don't move - they're found in dental units and portable units - cannot withstand the heat produced from large units
stationary anode
secondary
metallic silver
14 x 17
48. When more electrons hit the focal spot on the anode
intussusception
lens
grid
more x-rays produced
49. Is the density difference between 2 adjacent areas on a radiograph
grid focus
adjustable lead shutters
contrast
AgBr
50. Distance from the grid to the x-ray tube (36-40 inches)
grid focus
black
pneumocystogram
true