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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. With the heel effect - more x-rays tend to be produced toward the cathode end
inversely proportional
true
4 ft
radiograph
2. The 2 types of collimators are
lead cone and adjustable lead shutters
intensifying screens
caudal border of scapula
false
3. To utilize this - you position the thickest part of the animal towards the cathode end of the x-ray tube
heel effect
whiter
movement
6 ft
4. Outer layer of disk ( dries out and cracks and causes disk to herniate)
0.5mm
annulus fibrosis
high contrast
erythema
5. Is the most common artifact in radiography
lead cone and adjustable lead shutters
grid cutoff
white and black are reversed
movement
6. What is the difference between fluoroscopy and a regular radiograph
focal spot
white and black are reversed
increase scatter
kVp
7. If barium leaks into the abdomen or lungs - it can cause what
kVp
clinical signs
spondylosis
inflammation an granuloma
8. Legally - a non-pregnant woman is required to hold a HBC dog for radiographs in NYS
15% rule for kVp
lines per centimeter
inversely proportional
false
9. These crystals will turn white/clear when processing film
density
false
cathode and anode
unexposed AgBr
10. NYSVMS Facility Accreditation Standards
false
line focus principle
NYS Public Health Law #225
alopecia
11. MAs for bone views (pelvis - skull - spine) 2x =?
10
0.5mm
NYS Public Health Law #225
grid cutoff
12. Infection of a disk - or bone near it
diskospondylitis
heel effect
sensitive cells
higher mA
13. These screens are high speed - they decrease exposure - poorer detail - able to penetrate thicker areas
collimator
fast
wobblers syndrome
the higher the mA
14. Affects both density and contrast
false
electrons
kVp
black
15. A living animal - with tissue densities such as fat - muscle - fluid - and air
false
grid cutoff
3cc/#
long scale of contrast
16. Increase what value to penetrate thick body parts
6 ft
fast film
black
kVp
17. If the kVp is too high
6 ft
silver halide
grid cutoff
increase scatter
18. Sheets of luminescent phosphor crystals bound together and mounted on a cardboard or plastic base
long scale of contrast
grid efficiency
intensifying screens
cassette
19. The focused grid is upside down - is one reason for
potter-bucky diagram
grid cutoff
somatic damage
inverse square law
20. What are the 2 types of anodes
thoracic(caudal) and lumbar
15% rule for kVp
stationary and rotating
10
21. Within the collimator outlines just how much is collimated
potter-bucky diagram
light source
line focus principle
osteomyelitis
22. If the thorax is greater than or equal to....you should use a grid
15 cm
slow
latent image
false
23. This is used to take 'real-time' radiographs - used a lot in horses
speed
radiograph
fluoroscopy
NYS Public Health Law #225
24. Monitors personal exposure to radiation
quantum mottle
primary
dosimeter
grid efficiency
25. Increased thickness of this leads to increased x-ray absorption and increased visible light emission from the crystals
screens (phosphor layer)
false
phosphor layer
false
26. What is the term for when the animal's bowel engulfs a piece of bowel distal to it - causing blockage
mAs
non-screen film
2.5
intussusception
27. Is only 1/3 the size of the actual focal spot
true
effective focal spot
focal spot
non-screen film
28. Gelatinous center of disk - pinches spinal cord to cause herniated disk
nucleus pulposis
pneumocystogram
phosphor type
Maximum Permissible Dose
29. Lead equivalent for apron
first trimester
true
0.25mm
nucleus pulposis
30. Extra pain is also called
decrease scatter radiation
3cc/#
hyperesthesia
intensifying screens
31. A clear protective layer on radiographic film
black
inverse square law
14 x 17
supercoat
32. MAs for extremities
40
5
wide latitude film
true
33. Calcium 'bridges' between adjacent vertebrae
spondylosis
back scatter
the higher the mA
AgBr
34. The picture formed after the film has been exposed to x-rays and then processed into a visible image.
density
anode
first trimester
radiograph
35. 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
osteomyelitis
electrons
10 cm
high contrast
36. Film with: ultra speed - grainier image - less exposure needed
fast film
black
high contrast
false
37. The distance from the x-ray tube to the x-ray machine is the SID (source image distance) - or the FFD (also known as....)
mAs
rapidly dividing
false
focal film distance
38. The efficiency of this reflects light made by phosphors back towards the film
density
reflective layer
phosphor layer
focal spot
39. A type of electromagnetic radiation which have a shorter wavelength than visible light
x-rays
long scale of contrast
AgBr
grey
40. X-ray gloves have to have....of lead equivalent
0.5mm
focal spot
screen film
spondylosis
41. To double the density
non-screen
stops peristalsis
double mAs
1/30
42. 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)
lines per centimeter
film cassette
calcium tungstate
movement
43. If the kVp is too low
no contrast
back scatter
slow
increase scatter
44. Lung tissue appears black (radiolucent) on a radiograph
idiopathic
0.5mm
decrease scatter radiation
true
45. Are produced when electrons are slowed down or stopped by atoms in the target area where they are aimed
0.5mm
kVp
mAs
x-rays
46. 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
latent image
cathode filament
direct relationship
grid focus
47. Must increase.....to compensate for x-ray absorption by the grid. (we triple our mAs)
kVp or mAs
phosphor layer
first trimester
adjustable lead shutters
48. Negative contrast agents appear what color on a radiograph
AgBr
black
white
cervical
49. The exact area of the anode that the electrons hit
cassette
inflammation an granuloma
stops peristalsis
focal spot
50. Has a negative charge
cathode
paresis
phosphor layer dyes
electrons
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