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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 a body part is greater than or equal to.....you should use a grid
true
sensitive cells
intussusception
10 cm
2. When the density difference is great - there is
non-screen film
grid
high contrast
cathode
3. There are......intensifying screens within a cassette
2
intensifying screens
cathode
fluoroscopy
4. 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)
cathode
potter-bucky diagram
grid cutoff
calcium tungstate
5. Extra vertebrae - scoliosis - fused vertebrae are all examples of
abnormalities
direct relationship
grid
iodine
6. A grid must be used on the chest if it's 11cm thick
false
AgBr
mAs
stationary anode
7. What type of film has no screens or film cassettes
non-screen
grid focus
4 ft
higher mA
8. Why do we not give atropine with a contrast radiograph
white and black are reversed
stops peristalsis
true
spondylosis
9. Screens are classified according to
grid focus
speed
true
effective focal spot
10. Less forgiving - high contrast - cannot tolerate changes in exposure or processing
reflective layer
screen film
false
narrow latitude film
11. Between density and mAs
arthritis
direct relationship
stationary and rotating
paresis
12. What is the term for a negative contrast cystogram where we inject air
pneumocystogram
10 cm
osteomyelitis
3cc/#
13. What type of cystogram uses air and hypaque
double contrast
effective focal spot
white
stationary anode
14. The effective focal spot is approximately 1/3 the size of the actual focal spot
5
true
fluoroscopy
pneumocystogram
15. Affects both density and contrast
kVp
3cc/#
focal film distance
genetic and somatic
16. An invisible image on the x-ray film Which becomes visible after it has been processed in the manual or automatic processor
double mAs
nucleus pulposis
screens (phosphor layer)
latent image
17. Has a positive charge
focused and unfocused or parallel
anode
visible light
latent image
18. Are produced when electrons are slowed down or stopped by atoms in the target area where they are aimed
false
cassette
x-rays
6 ft
19. A layer of intensifying screen that reflects the light from the phosphor layer toward the film
14 x 17
reflective layer
10
lines per centimeter
20. The distance from the x-ray tube to the x-ray machine is the SID (source image distance) - or the FFD (also known as....)
focal film distance
light source
focal spot
collimator
21. Crystals + x-rays = ?
6 ft
non-screen film
visible light
no contrast
22. The 2 types of collimators are
kVp
reflective layer
decrease scatter radiation
lead cone and adjustable lead shutters
23. A type of electromagnetic radiation which have a shorter wavelength than visible light
inflammation an granuloma
radiograph
x-rays
aluminum
24. If the thorax is greater than or equal to....you should use a grid
15 cm
non-screen
true
diskospondylitis
25. What is the term for when the animal's bowel engulfs a piece of bowel distal to it - causing blockage
movement
iodine
arthritis
intussusception
26. If the grid is stationary - more lines that are finer are less apt to show up on a radiograph - this is called....
white and black are reversed
grid
non-screen film
lines per centimeter
27. Most commonly used film - compromise between graininess and speed (detail)
silver halide
medium film
high contrast
thoracic(caudal) and lumbar
28. MAs for bone views (pelvis - skull - spine) 2x =?
lens
10
true
white
29. MAs for ANY part - when using a grid 3x= ?
15
false
x-rays
grid focus
30. Increased crystal size.....
more light
mAs
speed
focal spot
31. Positive contrast agents appear what color on a radiograph
white
silver halide
mAs
false
32. The exact area of the anode that the electrons hit
2.5
non-screen
focal spot
1/30
33. 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
heel effect
anode
cathode filament
secondary
34. The efficiency of this reflects light made by phosphors back towards the film
lens
10 cm
reflective layer
NYS Public Health Law #225
35. Animal has broken femur - it's ideal to have How many radiographs for diagnostic purposes
cathode filament
2
x-rays
mAs
36. Hairloss or baldness
unexposed AgBr
non-screen
10 cm
alopecia
37. If barium leaks into the abdomen or lungs - it can cause what
inflammation an granuloma
focal spot
reflective layer
cathode
38. What gives off 4 times the amount of light photons than does the calcium tungstate (it gives off green light)
14 x 17
false
direct relationship
rare earth elements
39. What specific part of the eye is cloudy with a cataract
lens
rare earth elements
x-rays
hypaque
40. If there's far or muscle in the way of an x-ray - those parts would be
grey
luxations
dosimeter
whiter
41. Increased thickness of this leads to increased x-ray absorption and increased visible light emission from the crystals
annulus fibrosis
0.5mm
decrease scatter radiation
phosphor layer
42. Weakness
paresis
screen film
calcium tungstate
cathode and anode
43. These crystals will turn white/clear when processing film
cathode and anode
unexposed AgBr
true
heel effect
44. Measures the power of penetrability (quality) of the x-rays produced
kVp
heel effect
wide latitude film
spondylosis
45. When processing film - the black areas are made of
metallic silver
false
inverse square law
true
46. The focused grid is upside down - is one reason for
true
grid cutoff
white
milliamperage
47. Is the source of electrons
thoracic(caudal) and lumbar
first trimester
iodine
cathode
48. Can cause damage to living cells through the process of excitation or ionization of electrons in the orbits around atoms
abnormalities
decrease scatter radiation
x-rays
screens (phosphor layer)
49. X-ray gloves have to have....of lead equivalent
inversely proportional
white
0.5mm
10 cm
50. We ideally take a radiograph of the abdomen at the peak of inspiration
x-rays
x-rays
false
mAs