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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. An abdominal radiograph should be taken at the peak of expiration
true
quantum mottle
caudal border of scapula
milliamperage
2. A layer of intensifying screen that reflects the light from the phosphor layer toward the film
lead cone and adjustable lead shutters
reflective layer
decrease scatter radiation
grid cutoff
3. Means more electrons will be released from the filament and directed at the anode
higher mA
reflective layer
hypaque
SOP
4. In the dark room - the safe light (red light) needs to be at least how far away from the loading bench
4 ft
false
non-screen
high contrast
5. A grid must be used on the chest if it's 11cm thick
false
focal spot
light source
back scatter
6. What is one of the most common area of occurance for spinal problems (15% dobermans)
rotating anode
somatic damage
cervical
non-screen
7. In which processing solution do unionized (green) AgBr crystals get removed from the film
true
screens (phosphor layer)
fixer
anode
8. NYSVMS Facility Accreditation Standards
grid focus
0.5mm
NYS Public Health Law #225
wide latitude film
9. Is determined by the ratio of the height of the lead strips to the distance between them
quantum mottle
grid efficiency
dosimeter
stationary anode
10. Calcium 'bridges' between adjacent vertebrae
dosimeter
spondylosis
grid cutoff
nucleus pulposis
11. Is responsible for the number or quantity of x-rays
fluoroscopy
slow film
mAs
back scatter
12. The effective focal spot is approximately 1/3 the size of the actual focal spot
true
rare earth elements
non-screen film
decrease scatter radiation
13. Gelatinous center of disk - pinches spinal cord to cause herniated disk
x-rays
decrease scatter radiation
true
nucleus pulposis
14. What needs to have high levels of x-ray absorbtion
thoracic(caudal) and lumbar
collimator
screens (phosphor layer)
anode
15. MAs for extremities
kVp
0.25mm
5
medium film
16. Growth - gonadal - neoplastic - and metabolically active cells are what kind of cells
white
rapidly dividing
slow
15
17. Pigments tend to decrease the lateral spread of light so there is increased detail
phosphor layer dyes
slow
diskospondylitis
wide latitude film
18. X-ray machines come with a set one - we cannot adjust it
15 cm
more x-rays produced
focal spot
density
19. Within the collimator outlines just how much is collimated
fluoroscopy
2
light source
milliamperage
20. Outer layer of disk ( dries out and cracks and causes disk to herniate)
highest mA and smallest time fraction
milliamperage
annulus fibrosis
wide latitude film
21. Has a filament made of tungsten - due to the high melting point
cathode and anode
1/30
decrease scatter radiation
false
22. What type of film gives more detailed radiographs but more exposure to everyone involved? (commonly used as dental film - or for extremities)
non-screen
metallic silver
true
supercoat
23. Slowly growing dividing cells are the most sensitive to the effects of ionizing radiaton
14 x 17
intussusception
non-screen film
false
24. To double the density
cassette
intensifying screens
double mAs
more x-rays produced
25. The type of collimator that we have here
adjustable lead shutters
joint mouse
focal spot
decrease scatter radiation
26. We are supposed to use a grid if the abdomen is greater than or equal to......
anode
focused and unfocused or parallel
cathode filament
10 cm
27. Is the electrical current that heats the filament
milliamperage
annulus fibrosis
light source
large crystals - small crystals
28. To utilize this - you position the thickest part of the animal towards the cathode end of the x-ray tube
true
cathode
heel effect
grid
29. Must increase.....to compensate for x-ray absorption by the grid. (we triple our mAs)
15
grid
kVp or mAs
false
30. Has a positive charge
rapidly dividing
anode
rare earth elements
focal film distance
31. What are the 2 types of anodes
fluoroscopy
stationary and rotating
contrast
highest mA and smallest time fraction
32. The shorter the wavelength of the x-ray - the more powerful the x-ray is
NYS Public Health Law #225
stationary and rotating
true
0.5mm
33. Film with: ultra speed - grainier image - less exposure needed
fast film
the higher the mA
collimator
double contrast
34. Old mAs x (new FFD)2 divided by (old FFD)2
silver halide
inverse square law
x-rays
double mAs
35. The distance from the x-ray tube to the x-ray machine is the SID (source image distance) - or the FFD (also known as....)
false
inflammation an granuloma
focal film distance
true
36. Legally - a non-pregnant woman is required to hold a HBC dog for radiographs in NYS
effective focal spot
false
cassette
double mAs
37. Incorrect grid focus is one reason for
wobblers syndrome
contrast
wide latitude film
grid cutoff
38. With what kind of typical film do we get 95% exposure due to visible light and 5% is due to the x-rays directly
rare earth elements
4 ft
cathode
screen film
39. Distance from the grid to the x-ray tube (36-40 inches)
grid focus
milliamperage
rare earth elements
true
40. What is the term for the spotty appearance on the film due to the large crystals in the screens
quantum mottle
whiter
slow film
double mAs
41. Another result of the 20 degree angling
black
heel effect
genetic damage
iodine
42. Aluminum filter
black
decrease scatter radiation
cathode and anode
grid focus
43. This is caused by mutations in gonadal cells - not seen until offspring are produced - mutations are not always bad
15% rule for kVp
genetic damage
peak kilovoltage
grid cutoff
44. These screens are the most common type - they give good resolution with relatively low exposure
medium or par
kVp or mAs
annulus fibrosis
black
45. A device that moves the grid back and forth under the table. it helps to prevent grid lines from showing
white and black are reversed
potter-bucky diagram
false
double contrast
46. Is the density difference between 2 adjacent areas on a radiograph
white and black are reversed
contrast
kVp
focal spot
47. Increased thickness of this leads to increased x-ray absorption and increased visible light emission from the crystals
focal spot
first trimester
phosphor layer
long scale of contrast
48. If barium leaks into the abdomen or lungs - it can cause what
film cassette
inflammation an granuloma
intensifying screens
grid focus
49. Most commonly used film - compromise between graininess and speed (detail)
milliamperage
grid efficiency
medium film
focal film distance
50. These crystals will turn white/clear when processing film
FFD
lens
cathode
unexposed AgBr