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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 is the term for a negative contrast cystogram where we inject air
lines per centimeter
double mAs
screens (phosphor layer)
pneumocystogram
2. Pigments tend to decrease the lateral spread of light so there is increased detail
phosphor layer dyes
dosimeter
anode
double mAs
3. When a body part is greater than or equal to.....you should use a grid
grid
high contrast
non-screen film
10 cm
4. Increase what value to penetrate thick body parts
4 ft
latent image
mAs
kVp
5. Dislocations or separations
highest mA and smallest time fraction
long scale of contrast
luxations
first trimester
6. The effective focal spot is only 1/3 the size of the actual focal spot. this is called the
secondary
line focus principle
10
intensifying screens
7. A clear protective layer on radiographic film
supercoat
cathode
direct relationship
decrease scatter radiation
8. MAs for bone views (pelvis - skull - spine) 2x =?
10
FFD
false
slow film
9. What is the term for an unknown cause
first trimester
spondylosis
highest mA and smallest time fraction
idiopathic
10. We should always try and stay How many feet from our x-ray machine
true
diskospondylitis
6 ft
milliamperage
11. Loss of movement in legs (front and/or back)
paralysis
cathode filament
false
non-screen film
12. Radiographic signs dont always agree with what
false
nucleus pulposis
clinical signs
metallic silver
13. MAs for chest 1/2x =?
true
2.5
true
increase density
14. MAs for ANY part - when using a grid 3x= ?
15 cm
fast
direct relationship
15
15. Are produced when electrons are slowed down or stopped by atoms in the target area where they are aimed
0.5mm
paralysis
fluoroscopy
x-rays
16. What type of film has the x-rays directly cause the latent image to be formed
non-screen
AgBr
mAs
calcium tungstate
17. Is on the anode and is angled at approximately 20 degrees from vertical
focal spot
screens (phosphor layer)
non-screen
alopecia
18. Film with: ultra speed - grainier image - less exposure needed
screen film
effective focal spot
fast film
inversely proportional
19. When more electrons hit the focal spot on the anode
white
false
more x-rays produced
fluoroscopy
20. The 2 types of collimators are
focal spot
true
FFD
lead cone and adjustable lead shutters
21. MAs for extremities
focused and unfocused or parallel
non-screen
5
joint mouse
22. Grid helps reduce the amount of......
indirect relationship
the sharper the radiograph
scatter radiation
nucleus pulposis
23. Redness of the skin
peak kilovoltage
erythema
false
grid cutoff
24. What type of bone tumors started elsewhere and spread to the location it was found
line focus principle
silver halide
kVp
secondary
25. The exact area of the anode that the electrons hit
focal spot
highest mA and smallest time fraction
indirect relationship
2
26. Affects both density and contrast
the higher the mA
kVp
2
double contrast
27. A layer of intensifying screen that reflects the light from the phosphor layer toward the film
abnormalities
sensitive cells
reflective layer
pneumocystogram
28. General purpose film - forgiving
milliamperage
non-screen
highest mA and smallest time fraction
wide latitude film
29. This pertains to the size of the electron cloud and thus directly to the number of x-ray produced
10 cm
the higher the mA
mAs
slow film
30. What needs to have high levels of x-ray absorbtion
false
screens (phosphor layer)
cathode filament
slow film
31. Screens are classified according to
the sharper the radiograph
speed
milliamperage
pneumocystogram
32. Film that is more sensitive to ionizing radiation than to fluorescent light
non-screen film
14 x 17
milliamperage
cathode
33. 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)
whiter
phosphor layer dyes
milliamperage
calcium tungstate
34. To double the density
double mAs
nucleus pulposis
latent image
osteomyelitis
35. Improper centering of grid is one reason for
iodine
kVp
large crystals - small crystals
grid cutoff
36. Film with silver crystals that is more sensitive to fluorescent light emitted from intensifying screens than to ionizing radiation
increase density
screen film
phosphor layer dyes
supercoat
37. For bladder cystography - we use what contrast material instead of barium
SOP
idiopathic
hypaque
reflective layer
38. What must have little or no 'afterglow'
lines per centimeter
light source
screens (phosphor layer)
anode
39. Has a positive charge
grid focus
anode
10
screens (phosphor layer)
40. The back of the cassette is made of lead to decrease....
back scatter
silver halide
stationary and rotating
grid cutoff
41. Legally - a non-pregnant woman is required to hold a HBC dog for radiographs in NYS
false
film cassette
collimator
double mAs
42. Outer layer of disk ( dries out and cracks and causes disk to herniate)
15
arthritis
annulus fibrosis
film cassette
43. Sheets of luminescent phosphor crystals bound together and mounted on a cardboard or plastic base
anode
primary
intensifying screens
quantum mottle
44. Calcium 'bridges' between adjacent vertebrae
x-rays
fast film
latent image
spondylosis
45. Incorrect grid focus is one reason for
2.5
2
increase density
grid cutoff
46. They don't move - they're found in dental units and portable units - cannot withstand the heat produced from large units
inversely proportional
stationary anode
double mAs
electrons
47. With the heel effect - more x-rays tend to be in the beam toward this end of the tube
0.5mm
paralysis
cathode filament
cathode
48. Tilting of the tube or grid is one reason for
increase scatter
grid cutoff
adjustable lead shutters
grey
49. Safe Operating Procedures
false
SOP
sensitive cells
genetic and somatic
50. These screens are high speed - they decrease exposure - poorer detail - able to penetrate thicker areas
annulus fibrosis
grid cutoff
fast
non-screen