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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. Is the electrical current that heats the filament
fast
santes' rule
genetic damage
milliamperage
2. Grid helps reduce the amount of......
rotating anode
nucleus pulposis
scatter radiation
anode
3. Hairloss or baldness
white
alopecia
first trimester
no contrast
4. This is caused by mutations in gonadal cells - not seen until offspring are produced - mutations are not always bad
stops peristalsis
long scale of contrast
dosimeter
genetic damage
5. Refers to the 'blackness' of a radiograph
grid efficiency
density
movement
unexposed AgBr
6. For bladder cystography - we use what contrast material instead of barium
kVp
decrease scatter radiation
10 cm
hypaque
7. An invisible image on the x-ray film Which becomes visible after it has been processed in the manual or automatic processor
erythema
fast
latent image
density
8. Is only 1/3 the size of the actual focal spot
effective focal spot
10
screens (phosphor layer)
lines per centimeter
9. White against black - like the x-ray of a plain skeleton
short scale of contrast
phosphor type
large crystals - small crystals
screens (phosphor layer)
10. If the kVp is increased by 15% - the density is doubled
increase density
15% rule for kVp
fast film
non-screen film
11. This pertains to the size of the electron cloud and thus directly to the number of x-ray produced
density
mAs
more light
secondary
12. When.....collide with the anode - 99% of energy is released in the form of heat - and 1% of energy is in the form of x-rays
electrons
grid cutoff
rapidly dividing
more light
13. 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)
phosphor type
calcium tungstate
fogging
false
14. Improper centering of grid is one reason for
aluminum
focal spot
grid cutoff
density
15. A clear protective layer on radiographic film
scatter radiation
screens (phosphor layer)
supercoat
arthritis
16. DJD is also called
inflammation an granuloma
film cassette
non-screen
arthritis
17. What needs to have high levels of x-ray to light conversion with the correct energy and color for the type of film used
2
screens (phosphor layer)
FFD
x-rays
18. If you use an mA of 300 - What time fraction must i use to get an mAs of 10?
wide latitude film
1/30
screen film
FFD
19. Old mAs x (new FFD)2 divided by (old FFD)2
SOP
lines per centimeter
FFD
inverse square law
20. Sheets of luminescent phorphor crystals on a cardboard or plastic base
5
intensifying screens
kVp
slow film
21. Film that is more sensitive to ionizing radiation than to fluorescent light
inflammation an granuloma
non-screen film
density
15
22. Is the most common artifact in radiography
non-screen
white
movement
inflammation an granuloma
23. MAs for ANY part - when using a grid 3x= ?
15
genetic damage
NYS Public Health Law #225
kVp or mAs
24. The greater the number of electrons released
grid cutoff
6 ft
heel effect
the higher the mA
25. An abdominal radiograph should be taken at the peak of expiration
true
decrease scatter radiation
white
electrons
26. These screens are the most common type - they give good resolution with relatively low exposure
back scatter
sensitive cells
medium or par
increase scatter
27. The effective focal spot is approximately 1/3 the size of the actual focal spot
true
light source
line focus principle
cathode
28. What type of bone tumors started elsewhere and spread to the location it was found
secondary
wide latitude film
reflective layer
scatter radiation
29. Measures the power of penetrability (quality) of the x-rays produced
4 ft
kVp
metallic silver
cathode filament
30. Can cause damage to living cells through the process of excitation or ionization of electrons in the orbits around atoms
medium film
cassette
x-rays
secondary
31. The shorter the wavelength of the x-ray - the more powerful the x-ray is
whiter
cervical
true
grid cutoff
32. Film with: high detail - minimal graininess - increased exposure
highest mA and smallest time fraction
lead cone and adjustable lead shutters
slow film
cervical
33. Cassettes can be made of.....Which is the type here - or they can be made of magnesium - vinyl - etc
aluminum
the higher the mA
2.5
genetic and somatic
34. Tilting of the tube or grid is one reason for
x-rays
grid cutoff
somatic damage
stationary anode
35. The 2 types of collimators are
cassette
line focus principle
fast film
lead cone and adjustable lead shutters
36. A type of electromagnetic radiation which have a shorter wavelength than visible light
grid cutoff
contrast
non-screen
x-rays
37. What type of film has no screens or film cassettes
15
grid cutoff
non-screen
joint mouse
38. What is one of the most common areas of occurance for spinal problems ( 85% dachshunds)
back scatter
thoracic(caudal) and lumbar
diskospondylitis
first trimester
39. Is the device which restricts (narrows) the beam of x-rays as they leave the x-ray machine
fixer
rapidly dividing
collimator
screen film
40. Sheets of luminescent phosphor crystals bound together and mounted on a cardboard or plastic base
screen film
visible light
intensifying screens
non-screen
41. With what kind of typical film do we get 95% exposure due to visible light and 5% is due to the x-rays directly
10
kVp
screen film
1/30
42. Increased thickness of this leads to increased x-ray absorption and increased visible light emission from the crystals
dosimeter
false
latent image
phosphor layer
43. What is the term for an unknown cause
clinical signs
first trimester
idiopathic
medium film
44. Film with silver crystals that is more sensitive to fluorescent light emitted from intensifying screens than to ionizing radiation
electrons
reflective layer
cathode
screen film
45. Increase mAs and kVp in order to...
increase density
abnormalities
focal spot
mAs
46. They don't move - they're found in dental units and portable units - cannot withstand the heat produced from large units
large crystals - small crystals
metallic silver
stationary anode
true
47. Radiographic signs dont always agree with what
erythema
milliamperage
clinical signs
iodine
48. A living animal - with tissue densities such as fat - muscle - fluid - and air
kVp
grid focus
long scale of contrast
pneumocystogram
49. What is one of the most common area of occurance for spinal problems (15% dobermans)
cervical
nucleus pulposis
potter-bucky diagram
1/30
50. Increase what value to penetrate thick body parts
screen film
grid cutoff
phosphor layer dyes
kVp