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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. Has a positive charge
non-screen film
rotating anode
peak kilovoltage
anode
2. If the kVp is increased by 15% - the density is doubled
2
x-rays
15% rule for kVp
true
3. With the heel effect - more x-rays tend to be in the beam toward this end of the tube
cathode
black
10 cm
false
4. When a body part is greater than or equal to.....you should use a grid
10 cm
double mAs
grey
aluminum
5. These screens are high speed - they decrease exposure - poorer detail - able to penetrate thicker areas
milliamperage
fast
15
heel effect
6. Has a negative charge
narrow latitude film
latent image
true
cathode
7. What are the 2 types of anodes
stationary and rotating
x-rays
afterglow
white and black are reversed
8. Must change if the FFD changes
true
mAs
black
fluoroscopy
9. Monitors personal exposure to radiation
the sharper the radiograph
rapidly dividing
fluoroscopy
dosimeter
10. Crystals + x-rays = ?
NYS Public Health Law #225
visible light
aluminum
pneumocystogram
11. Extra pain is also called
hyperesthesia
somatic damage
thoracic(caudal) and lumbar
high contrast
12. 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
focal spot
non-screen
scatter radiation
13. The tendency of a luminescent compound to continue to give off light after x-radiation has stopped
x-rays
afterglow
increase scatter
rapidly dividing
14. If barium leaks into the abdomen or lungs - it can cause what
10
focal film distance
adjustable lead shutters
inflammation an granuloma
15. Must increase.....to compensate for x-ray absorption by the grid. (we triple our mAs)
kVp or mAs
hyperesthesia
2
intensifying screens
16. Types of cell damage
decrease scatter radiation
true
genetic and somatic
wide latitude film
17. We are supposed to use a grid if the abdomen is greater than or equal to......
true
pneumocystogram
10 cm
arthritis
18. We should always try and stay How many feet from our x-ray machine
true
direct relationship
focal spot
6 ft
19. An invisible image on the x-ray film Which becomes visible after it has been processed in the manual or automatic processor
screen film
latent image
contrast
SOP
20. Areas on film that should be black but come out grey - due to storage
density
anode
scatter radiation
fogging
21. Faster screens/less detail; slower screens/more detail
pneumocystogram
cathode filament
collimator
large crystals - small crystals
22. When more electrons hit the focal spot on the anode
more x-rays produced
phosphor layer dyes
rotating anode
increase density
23. KVp=(2x thickness of body part in cm) + 40
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183
24. Affects both density and contrast
true
kVp
clinical signs
grid cutoff
25. Positive contrast agents appear what color on a radiograph
effective focal spot
white
light source
fast
26. If the kVp is too high
density
movement
visible light
increase scatter
27. Is to the left - electrons bounce off it at a 20 degree angle
primary
anode
6 ft
decrease scatter radiation
28. Increase what value to penetrate thick body parts
black
grid focus
true
kVp
29. This is inversely proportional to screen speed
radiographic detail
dosimeter
false
5
30. Redness of the skin
grid efficiency
erythema
stationary and rotating
more light
31. Within the collimator outlines just how much is collimated
no contrast
light source
15% rule for kVp
4 ft
32. General purpose film - forgiving
quantum mottle
mAs
wide latitude film
cathode
33. Is determined by the ratio of the height of the lead strips to the distance between them
film cassette
heel effect
clinical signs
grid efficiency
34. X-ray gloves have to have....of lead equivalent
diskospondylitis
0.5mm
secondary
15 cm
35. We ideally take a radiograph of the abdomen at the peak of inspiration
non-screen
metallic silver
more light
false
36. Pigments tend to decrease the lateral spread of light so there is increased detail
true
sensitive cells
luxations
phosphor layer dyes
37. This number in santes' rule refers to the distance the x-ray tube is from the x-ray film
electrons
iodine
40
non-screen
38. 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)
direct relationship
intussusception
calcium tungstate
Maximum Permissible Dose
39. Is only 1/3 the size of the actual focal spot
more light
sensitive cells
SOP
effective focal spot
40. MAs for abdomen (standard mAs) x=?
cassette
stationary anode
increase scatter
5
41. Is influenced by quantity of x-rays(mAs) - quality of x-rays (kVp) - type and thickness of tissue being x-rayed
milliamperage
density
effective focal spot
annulus fibrosis
42. If the thorax is greater than or equal to....you should use a grid
heel effect
15 cm
dosimeter
true
43. What is one of the most common area of occurance for spinal problems (15% dobermans)
focal spot
cervical
5
6 ft
44. Animal has broken femur - it's ideal to have How many radiographs for diagnostic purposes
2
intensifying screens
large crystals - small crystals
iodine
45. Calcium 'bridges' between adjacent vertebrae
arthritis
radiographic detail
non-screen
spondylosis
46. Measures the power of penetrability (quality) of the x-rays produced
screens (phosphor layer)
kVp
phosphor layer
15 cm
47. The layer of the film where the action occurs
AgBr
heel effect
cathode and anode
focal spot
48. If there's metal in the way of an x-ray - than no x-rays will get through and that part would be
white
0.5mm
intussusception
heel effect
49. If you use an mA of 300 - What time fraction must i use to get an mAs of 10?
1/30
adjustable lead shutters
fast film
lead cone and adjustable lead shutters
50. Is to the right - it produces the electrons
white
cathode
lens
inverse square law