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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. KVp=(2x thickness of body part in cm) + 40
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183
2. Crystals + x-rays = ?
high contrast
visible light
large crystals - small crystals
cervical
3. A grid must be used on the chest if it's 11cm thick
false
the higher the mA
indirect relationship
3cc/#
4. Dislocations or separations
0.5mm
fixer
luxations
collimator
5. Lead equivalent for thyroid sheild
0.5mm
rapidly dividing
speed
first trimester
6. A clear protective layer on radiographic film
supercoat
cathode
silver halide
grid cutoff
7. If the kVp is increased by 15% - the density is doubled
x-rays
screen film
non-screen
15% rule for kVp
8. Within the collimator outlines just how much is collimated
light source
non-screen film
15 cm
focal spot
9. Is located in a focusing cup made of molybdenum which has a high melting point and helps to direct the electrons produced toward the cathode
highest mA and smallest time fraction
sensitive cells
mAs
cathode filament
10. Weakness
paresis
contrast
false
fixer
11. Screen speed is.....to the exposure required to cause it to flouresce
14 x 17
inversely proportional
intussusception
density
12. When the AgBr reacts and ionizes with light or x-rays - than at this point - What is on the film is known as the
true
latent image
white
x-rays
13. For bladder cystography - we use what contrast material instead of barium
metallic silver
hypaque
15 cm
non-screen film
14. 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
line focus principle
sensitive cells
focal film distance
15. Loss of movement in legs (front and/or back)
paralysis
false
mAs
peak kilovoltage
16. MAs for chest 1/2x =?
higher mA
focal spot
2.5
cathode filament
17. Is the measurement for the maximum energy available at that setting
10
peak kilovoltage
15% rule for kVp
black
18. If there's metal in the way of an x-ray - than no x-rays will get through and that part would be
fogging
white
line focus principle
rotating anode
19. This is caused by mutations in gonadal cells - not seen until offspring are produced - mutations are not always bad
mAs
speed
genetic damage
phosphor layer
20. The efficiency of this reflects light made by phosphors back towards the film
the sharper the radiograph
supercoat
stops peristalsis
reflective layer
21. White against black - like the x-ray of a plain skeleton
short scale of contrast
fast
focal spot
anode
22. Legally - a non-pregnant woman is required to hold a HBC dog for radiographs in NYS
paresis
heel effect
false
potter-bucky diagram
23. Improper centering of grid is one reason for
grid cutoff
5
direct relationship
inversely proportional
24. Sheets of luminescent phosphor crystals bound together and mounted on a cardboard or plastic base
osteomyelitis
NYS Public Health Law #225
erythema
intensifying screens
25. What is the name for the cartilage flap in the shoulder joint that has broken free and is floating around in the joint fluid
grid cutoff
fast
latent image
joint mouse
26. As this increases - the intensity of the x-ray beam decreases - so the beam intensity increases - and the mAs must decrease to compensate
FFD
lens
joint mouse
effective focal spot
27. Amount of radiation a person can recieve in a calendar year
potter-bucky diagram
Maximum Permissible Dose
cathode and anode
false
28. General purpose film - forgiving
fast
pneumocystogram
wide latitude film
decrease scatter radiation
29. Safe Operating Procedures
luxations
kVp or mAs
SOP
density
30. What must have little or no 'afterglow'
potter-bucky diagram
true
screens (phosphor layer)
intensifying screens
31. The 2 types of collimators are
lead cone and adjustable lead shutters
medium film
wide latitude film
osteomyelitis
32. Animal has broken femur - it's ideal to have How many radiographs for diagnostic purposes
lens
2
stationary anode
short scale of contrast
33. Increase what value to penetrate thick body parts
5
contrast
kVp
decrease scatter radiation
34. This is used to take 'real-time' radiographs - used a lot in horses
abnormalities
false
fluoroscopy
electrons
35. 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)
primary
medium film
diskospondylitis
calcium tungstate
36. Is the most common artifact in radiography
false
movement
clinical signs
heel effect
37. A living animal - with tissue densities such as fat - muscle - fluid - and air
iodine
focal film distance
afterglow
long scale of contrast
38. Radiographic signs dont always agree with what
highest mA and smallest time fraction
clinical signs
screens (phosphor layer)
effective focal spot
39. The effective focal spot is approximately 1/3 the size of the actual focal spot
true
narrow latitude film
metallic silver
alopecia
40. What is the term for a negative contrast cystogram where we inject air
grid focus
decrease scatter radiation
hypaque
pneumocystogram
41. If the thorax is greater than or equal to....you should use a grid
reflective layer
15 cm
dosimeter
black
42. What is one of the most common areas of occurance for spinal problems ( 85% dachshunds)
kVp
screen film
thoracic(caudal) and lumbar
slow
43. What needs to have high levels of x-ray to light conversion with the correct energy and color for the type of film used
wide latitude film
white
screens (phosphor layer)
rare earth elements
44. Aluminum filter
electrons
mAs
decrease scatter radiation
narrow latitude film
45. Increased thickness of this leads to increased x-ray absorption and increased visible light emission from the crystals
phosphor layer
inversely proportional
secondary
SOP
46. MAs for bone views (pelvis - skull - spine) 2x =?
10
density
somatic damage
slow film
47. This pertains to the size of the electron cloud and thus directly to the number of x-ray produced
mAs
scatter radiation
15% rule for kVp
screens (phosphor layer)
48. What specific part of the eye is cloudy with a cataract
grid
SOP
mAs
lens
49. Faster screens/less detail; slower screens/more detail
black
large crystals - small crystals
grid cutoff
heel effect
50. Positive contrast agents appear what color on a radiograph
heel effect
fast film
white
false