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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. Infection of a disk - or bone near it
10 cm
intensifying screens
screen film
diskospondylitis
2. What specific part of the eye is cloudy with a cataract
white
FFD
lens
highest mA and smallest time fraction
3. What is one of the most common area of occurance for spinal problems (15% dobermans)
cervical
false
radiograph
contrast
4. Radiograph of a dogs skeleton has a long scale of contrast
diskospondylitis
the sharper the radiograph
aluminum
false
5. Means more electrons will be released from the filament and directed at the anode
higher mA
fixer
diskospondylitis
dosimeter
6. With the heel effect - more x-rays tend to be in the beam toward this end of the tube
mAs
cathode
radiograph
narrow latitude film
7. What is the difference between fluoroscopy and a regular radiograph
x-rays
0.5mm
white and black are reversed
true
8. Types of cell damage
light source
back scatter
genetic and somatic
slow film
9. Film with: high detail - minimal graininess - increased exposure
slow film
cassette
false
phosphor type
10. The type of collimator that we have here
focused and unfocused or parallel
phosphor layer dyes
adjustable lead shutters
peak kilovoltage
11. Must increase.....to compensate for x-ray absorption by the grid. (we triple our mAs)
x-rays
kVp or mAs
grid cutoff
slow
12. Cassettes can be made of.....Which is the type here - or they can be made of magnesium - vinyl - etc
aluminum
effective focal spot
3cc/#
rotating anode
13. A lightproof encasement designed to hold x-ray film and intensifying screens in close contact
cassette
highest mA and smallest time fraction
phosphor type
short scale of contrast
14. What is the name for the cartilage flap in the shoulder joint that has broken free and is floating around in the joint fluid
4 ft
screen film
nucleus pulposis
joint mouse
15. AgBr + light =
2
screen film
spondylosis
increase density
16. A...is a series of lead strips on edge which only allow the primary x-rays - which are traveling in straight lines - reach the film
wide latitude film
inverse square law
grid
medium film
17. This is inversely proportional to screen speed
stationary anode
radiographic detail
false
fogging
18. A living animal - with tissue densities such as fat - muscle - fluid - and air
long scale of contrast
non-screen
2.5
phosphor type
19. Calcium 'bridges' between adjacent vertebrae
long scale of contrast
false
spondylosis
calcium tungstate
20. Hairloss or baldness
alopecia
annulus fibrosis
intensifying screens
film cassette
21. Must change if the FFD changes
fluoroscopy
iodine
idiopathic
mAs
22. The efficiency of this reflects light made by phosphors back towards the film
non-screen
NYS Public Health Law #225
adjustable lead shutters
reflective layer
23. Has a positive charge
1/30
intensifying screens
anode
Maximum Permissible Dose
24. Refers to the 'blackness' of a radiograph
scatter radiation
density
focal film distance
secondary
25. Are produced when electrons are slowed down or stopped by atoms in the target area where they are aimed
6 ft
rapidly dividing
narrow latitude film
x-rays
26. Pigments tend to decrease the lateral spread of light so there is increased detail
phosphor layer dyes
false
FFD
first trimester
27. Has a negative charge
intussusception
metallic silver
cathode
high contrast
28. This stage of pregnancy is the most dangerous for the fetus
40
screen film
direct relationship
first trimester
29. Grid helps reduce the amount of......
visible light
scatter radiation
peak kilovoltage
intensifying screens
30. Types of grids
inversely proportional
focused and unfocused or parallel
lead cone and adjustable lead shutters
1/30
31. Film that is more sensitive to ionizing radiation than to fluorescent light
non-screen film
highest mA and smallest time fraction
afterglow
supercoat
32. Is the source of electrons
15
screen film
rapidly dividing
cathode
33. These screens have increased definition/detail - need to have increased radiation exposure
contrast
slow
mAs
fluoroscopy
34. Affects both density and contrast
Maximum Permissible Dose
kVp
line focus principle
intensifying screens
35. Is on the anode and is angled at approximately 20 degrees from vertical
focal spot
fogging
slow
genetic and somatic
36. Increased thickness of this leads to increased x-ray absorption and increased visible light emission from the crystals
phosphor layer
fluoroscopy
lines per centimeter
kVp
37. With the heel effect - more x-rays tend to be produced toward the cathode end
true
line focus principle
cathode filament
collimator
38. Is determined by the ratio of the height of the lead strips to the distance between them
higher mA
grid efficiency
afterglow
radiographic detail
39. 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
0.5mm
joint mouse
rotating anode
long scale of contrast
40. For bladder cystography - we use what contrast material instead of barium
screen film
medium film
hypaque
cathode
41. Increase what value to penetrate thick body parts
movement
mAs
kVp
heel effect
42. Is to the right - it produces the electrons
double contrast
6 ft
kVp
cathode
43. Crystals + x-rays = ?
arthritis
2
anode
visible light
44. Measures the power of penetrability (quality) of the x-rays produced
2
kVp
annulus fibrosis
quantum mottle
45. Another result of the 20 degree angling
rapidly dividing
focal spot
heel effect
cassette
46. A device that moves the grid back and forth under the table. it helps to prevent grid lines from showing
grid focus
reflective layer
potter-bucky diagram
intensifying screens
47. If there's no object in the way of an x-ray - the picture would be
cassette
black
cathode
unexposed AgBr
48. The tendency of a luminescent compound to continue to give off light after x-radiation has stopped
focused and unfocused or parallel
caudal border of scapula
fast film
afterglow
49. Why do we not give atropine with a contrast radiograph
phosphor type
stops peristalsis
10
focal spot
50. Most commonly used film - compromise between graininess and speed (detail)
wobblers syndrome
non-screen film
medium film
screen film