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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. A living animal - with tissue densities such as fat - muscle - fluid - and air
quantum mottle
decrease scatter radiation
long scale of contrast
5
2. These cells are the most sensitive to radiation
cervical
cathode
anode
rapidly dividing
3. The effective focal spot is only 1/3 the size of the actual focal spot. this is called the
quantum mottle
density
line focus principle
x-rays
4. The 2 types of collimators are
white and black are reversed
lead cone and adjustable lead shutters
idiopathic
grid focus
5. Is responsible for the number or quantity of x-rays
x-rays
phosphor layer
mAs
0.5mm
6. The picture formed after the film has been exposed to x-rays and then processed into a visible image.
lead cone and adjustable lead shutters
radiograph
grid cutoff
potter-bucky diagram
7. This gives you the desired mAs - and it gives less time for your patient to move
highest mA and smallest time fraction
decrease scatter radiation
genetic damage
lines per centimeter
8. Is the electrical current that heats the filament
milliamperage
black
visible light
kVp or mAs
9. This pertains to the size of the electron cloud and thus directly to the number of x-ray produced
kVp
decrease scatter radiation
aluminum
mAs
10. Sheets of luminescent phosphor crystals bound together and mounted on a cardboard or plastic base
false
white and black are reversed
kVp
intensifying screens
11. What is one of the most common area of occurance for spinal problems (15% dobermans)
phosphor type
spondylosis
osteomyelitis
cervical
12. Measures the power of penetrability (quality) of the x-rays produced
highest mA and smallest time fraction
screens (phosphor layer)
kVp
radiograph
13. When more electrons hit the focal spot on the anode
2
more x-rays produced
genetic and somatic
NYS Public Health Law #225
14. Aluminum filter
decrease scatter radiation
rapidly dividing
kVp
phosphor type
15. Rotating anode
rapidly dividing
focal spot
decrease scatter radiation
grid cutoff
16. As this increases - the intensity of the x-ray beam decreases - so the beam intensity increases - and the mAs must decrease to compensate
joint mouse
light source
radiographic detail
FFD
17. If the thorax is greater than or equal to....you should use a grid
annulus fibrosis
grid focus
15 cm
kVp
18. MAs for ANY part - when using a grid 3x= ?
15
stationary anode
40
screens (phosphor layer)
19. With what kind of typical film do we get 95% exposure due to visible light and 5% is due to the x-rays directly
scatter radiation
screen film
double contrast
reflective layer
20. Is the most common artifact in radiography
inversely proportional
back scatter
true
movement
21. Tilting of the tube or grid is one reason for
density
lens
grid cutoff
FFD
22. Is the device which restricts (narrows) the beam of x-rays as they leave the x-ray machine
collimator
density
kVp
screens (phosphor layer)
23. This is caused by mutations in gonadal cells - not seen until offspring are produced - mutations are not always bad
genetic damage
high contrast
cassette
intensifying screens
24. Cassettes can be made of.....Which is the type here - or they can be made of magnesium - vinyl - etc
non-screen
aluminum
light source
kVp
25. White against black - like the x-ray of a plain skeleton
6 ft
grey
milliamperage
short scale of contrast
26. Another result of the 20 degree angling
heel effect
fast film
anode
focused and unfocused or parallel
27. Has a negative charge
focal spot
paresis
cathode
stops peristalsis
28. Legally - a non-pregnant woman is required to hold a HBC dog for radiographs in NYS
false
annulus fibrosis
density
pneumocystogram
29. These screens are the most common type - they give good resolution with relatively low exposure
large crystals - small crystals
false
medium or par
white
30. Is influenced by quantity of x-rays(mAs) - quality of x-rays (kVp) - type and thickness of tissue being x-rayed
white and black are reversed
hypaque
fast
density
31. The back of the cassette is made of lead to decrease....
slow
milliamperage
x-rays
back scatter
32. Body cells affected - damage seen during lifetime of creature - can be immediate or cummulative
luxations
somatic damage
wide latitude film
silver halide
33. Ideally is very small
phosphor type
cathode and anode
santes' rule
focal spot
34. Weakness
grid cutoff
grey
lens
paresis
35. For bladder cystography - we use what contrast material instead of barium
x-rays
screens (phosphor layer)
more x-rays produced
hypaque
36. This stage of pregnancy is the most dangerous for the fetus
first trimester
NYS Public Health Law #225
decrease scatter radiation
non-screen film
37. When a body part is greater than or equal to.....you should use a grid
false
milliamperage
0.5mm
10 cm
38. The electrical current sent through the filament to cause this electron release is called
indirect relationship
cathode
milliamperage
alopecia
39. An abdominal radiograph should be taken at the peak of expiration
density
mAs
cathode
true
40. If there's bone in the way of an x-ray -. those parts would be
more light
white
more x-rays produced
whiter
41. Is to the left - electrons bounce off it at a 20 degree angle
2
alopecia
anode
more light
42. Increase mAs and kVp in order to...
5
increase density
cassette
light source
43. This is inversely proportional to screen speed
lines per centimeter
grid efficiency
slow film
radiographic detail
44. Grid helps reduce the amount of......
santes' rule
lines per centimeter
focal spot
scatter radiation
45. If you use an mA of 300 - What time fraction must i use to get an mAs of 10?
true
1/30
non-screen film
spondylosis
46. What is one of the most common areas of occurance for spinal problems ( 85% dachshunds)
thoracic(caudal) and lumbar
slow
kVp
10 cm
47. To double the density
light source
double mAs
calcium tungstate
aluminum
48. Increased crystal size.....
true
true
direct relationship
more light
49. Dislocations or separations
rapidly dividing
0.5mm
direct relationship
luxations
50. Collimator
cassette
x-rays
decrease scatter radiation
non-screen film