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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. When more electrons hit the focal spot on the anode
cathode
calcium tungstate
quantum mottle
more x-rays produced
2. If there's no object in the way of an x-ray - the picture would be
phosphor layer dyes
black
cathode
double contrast
3. Film with: high detail - minimal graininess - increased exposure
slow film
direct relationship
NYS Public Health Law #225
scatter radiation
4. What needs to have high levels of x-ray absorbtion
high contrast
screens (phosphor layer)
alopecia
lead cone and adjustable lead shutters
5. An invisible image on the x-ray film Which becomes visible after it has been processed in the manual or automatic processor
black
heel effect
latent image
dosimeter
6. Ideally is very small
focal spot
kVp
non-screen film
0.5mm
7. A lightproof encasement designed to hold x-ray film and intensifying screens in close contact
2
cassette
the higher the mA
more x-rays produced
8. Affects both density and contrast
fixer
kVp
14 x 17
grid efficiency
9. If barium leaks into the abdomen or lungs - it can cause what
inflammation an granuloma
wobblers syndrome
kVp
true
10. When processing film - the black areas are made of
metallic silver
high contrast
false
idiopathic
11. Sheets of luminescent phosphor crystals bound together and mounted on a cardboard or plastic base
true
scatter radiation
0.25mm
intensifying screens
12. The electrical current sent through the filament to cause this electron release is called
x-rays
15 cm
peak kilovoltage
milliamperage
13. Crystals + x-rays = ?
visible light
true
0.5mm
grid cutoff
14. If the thorax is greater than or equal to....you should use a grid
inflammation an granuloma
15 cm
white
0.5mm
15. Means more electrons will be released from the filament and directed at the anode
hypaque
15 cm
x-rays
higher mA
16. Increased thickness of this leads to increased x-ray absorption and increased visible light emission from the crystals
5
phosphor layer
increase scatter
2
17. Extra pain is also called
milliamperage
hyperesthesia
heel effect
santes' rule
18. Is to the right - it produces the electrons
focal spot
cervical
cathode
secondary
19. Improper centering of grid is one reason for
6 ft
grid cutoff
true
increase density
20. What gives off 4 times the amount of light photons than does the calcium tungstate (it gives off green light)
primary
rare earth elements
non-screen film
decrease scatter radiation
21. If the kVp is increased by 15% - the density is doubled
true
false
increase density
15% rule for kVp
22. Cassettes can be made of.....Which is the type here - or they can be made of magnesium - vinyl - etc
medium film
aluminum
non-screen film
kVp
23. The picture formed after the film has been exposed to x-rays and then processed into a visible image.
true
anode
inversely proportional
radiograph
24. Does move - has disks that rotate at high speeds - this helps spread out the heat that's produced as the electrons hit the focal spot
focal spot
AgBr
rotating anode
cathode
25. If the grid is stationary - more lines that are finer are less apt to show up on a radiograph - this is called....
lines per centimeter
light source
grid efficiency
FFD
26. Within the collimator outlines just how much is collimated
medium or par
white
narrow latitude film
light source
27. Less forgiving - high contrast - cannot tolerate changes in exposure or processing
narrow latitude film
increase density
fogging
santes' rule
28. Growth - gonadal - neoplastic - and metabolically active cells are what kind of cells
rapidly dividing
the higher the mA
rare earth elements
lens
29. If the kVp is too low
osteomyelitis
genetic damage
3cc/#
no contrast
30. A clear protective layer on radiographic film
stationary and rotating
true
reflective layer
supercoat
31. What are the 2 types of anodes
indirect relationship
cathode
stationary and rotating
dosimeter
32. NYSVMS Facility Accreditation Standards
nucleus pulposis
grid focus
NYS Public Health Law #225
increase density
33. Film that is more sensitive to ionizing radiation than to fluorescent light
sensitive cells
mAs
true
non-screen film
34. Is the measurement for the maximum energy available at that setting
15 cm
direct relationship
stationary anode
peak kilovoltage
35. This stage of pregnancy is the most dangerous for the fetus
reflective layer
scatter radiation
first trimester
kVp
36. The effective focal spot is only 1/3 the size of the actual focal spot. this is called the
true
grid cutoff
intensifying screens
line focus principle
37. Has a filament made of tungsten - due to the high melting point
cathode and anode
line focus principle
kVp or mAs
true
38. Calcium tungstate - rare earth elements
NYS Public Health Law #225
white
phosphor type
more x-rays produced
39. If there's bone in the way of an x-ray -. those parts would be
white
whiter
wobblers syndrome
clinical signs
40. What is the term for the spotty appearance on the film due to the large crystals in the screens
rare earth elements
screen film
quantum mottle
paralysis
41. What type of film has no screens or film cassettes
true
non-screen
focal film distance
lines per centimeter
42. What specific part of the eye is cloudy with a cataract
lens
paresis
5
non-screen film
43. These screens are high speed - they decrease exposure - poorer detail - able to penetrate thicker areas
back scatter
latent image
fast
0.5mm
44. Areas on film that should be black but come out grey - due to storage
stops peristalsis
rapidly dividing
fogging
0.5mm
45. In which processing solution do unionized (green) AgBr crystals get removed from the film
screens (phosphor layer)
4 ft
scatter radiation
fixer
46. The back of the cassette is made of lead to decrease....
screens (phosphor layer)
decrease scatter radiation
false
back scatter
47. MAs for ANY part - when using a grid 3x= ?
double mAs
15
increase density
movement
48. Lead equivalent for thyroid sheild
focused and unfocused or parallel
anode
15 cm
0.5mm
49. What is the name for the cartilage flap in the shoulder joint that has broken free and is floating around in the joint fluid
cathode
metallic silver
joint mouse
cathode and anode
50. Compound of silver and bromine - chlorine - or iodine - all of which are in the halogen group of elements
14 x 17
increase density
double mAs
silver halide