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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. The effective focal spot is only 1/3 the size of the actual focal spot. this is called the
line focus principle
grid cutoff
first trimester
intensifying screens
2. Refers to the 'blackness' of a radiograph
density
contrast
more light
fast
3. X-ray gloves have to have....of lead equivalent
somatic damage
0.5mm
15 cm
true
4. Extra vertebrae - scoliosis - fused vertebrae are all examples of
abnormalities
paralysis
white
screens (phosphor layer)
5. Improper centering of grid is one reason for
grid cutoff
light source
cathode
abnormalities
6. If there's far or muscle in the way of an x-ray - those parts would be
aluminum
afterglow
screens (phosphor layer)
grey
7. What type of films need a lot more x-ray exposure and more time to expose them
grey
non-screen
cathode filament
focal spot
8. Must increase.....to compensate for x-ray absorption by the grid. (we triple our mAs)
10 cm
stationary and rotating
kVp or mAs
clinical signs
9. What specific part of the eye is cloudy with a cataract
false
hyperesthesia
lens
false
10. AgBr + x-rays =
grid focus
dosimeter
non-screen film
screen film
11. Ideally is very small
focal spot
abnormalities
cathode and anode
1/30
12. What type of film gives more detailed radiographs but more exposure to everyone involved? (commonly used as dental film - or for extremities)
rotating anode
non-screen
focal spot
more x-rays produced
13. We are supposed to use a grid if the abdomen is greater than or equal to......
screen film
grey
grid cutoff
10 cm
14. With the heel effect - more x-rays tend to be produced toward the cathode end
10 cm
true
fast
SOP
15. What is the term for a negative contrast cystogram where we inject air
thoracic(caudal) and lumbar
grid cutoff
pneumocystogram
focal film distance
16. The exact area of the anode that the electrons hit
secondary
back scatter
focal spot
cathode
17. The x-ray machine we've been using has a rotating anode
fast
14 x 17
annulus fibrosis
true
18. A grid must be used on the chest if it's 11cm thick
false
true
paralysis
grid cutoff
19. Increase developing time and temp of developing fluid
increase density
fluoroscopy
double contrast
highest mA and smallest time fraction
20. If perforation is suspected - what compound do we use when radiographing
direct relationship
white
iodine
unexposed AgBr
21. Is the device which restricts (narrows) the beam of x-rays as they leave the x-ray machine
more light
peak kilovoltage
collimator
grid cutoff
22. When doing a lateral radiograph of the thorax/chest - the x-ray beam should be centered over what specific anatomical landmark
stationary and rotating
caudal border of scapula
inversely proportional
kVp
23. What is one of the most common areas of occurance for spinal problems ( 85% dachshunds)
no contrast
milliamperage
santes' rule
thoracic(caudal) and lumbar
24. 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
potter-bucky diagram
non-screen film
unexposed AgBr
25. Radiograph of a dogs skeleton has a long scale of contrast
true
false
mAs
lens
26. Longer wavelengths of electromagnetic radiation have more penetrating power
luxations
intensifying screens
false
lens
27. The tendency of a luminescent compound to continue to give off light after x-radiation has stopped
spondylosis
cathode and anode
erythema
afterglow
28. An invisible image on the x-ray film Which becomes visible after it has been processed in the manual or automatic processor
15
false
latent image
decrease scatter radiation
29. Size film we use here
density
14 x 17
no contrast
wobblers syndrome
30. What needs to have high levels of x-ray to light conversion with the correct energy and color for the type of film used
double contrast
screens (phosphor layer)
grid efficiency
unexposed AgBr
31. Must be radiolucent
film cassette
increase density
no contrast
0.5mm
32. Means more electrons will be released from the filament and directed at the anode
wobblers syndrome
somatic damage
stationary and rotating
higher mA
33. Are produced when electrons are slowed down or stopped by atoms in the target area where they are aimed
effective focal spot
whiter
x-rays
screen film
34. A living animal - with tissue densities such as fat - muscle - fluid - and air
long scale of contrast
false
luxations
focused and unfocused or parallel
35. Film with: high detail - minimal graininess - increased exposure
false
radiographic detail
wide latitude film
slow film
36. Between density and mAs
direct relationship
x-rays
lead cone and adjustable lead shutters
Maximum Permissible Dose
37. Sheets of luminescent phorphor crystals on a cardboard or plastic base
mAs
stops peristalsis
true
intensifying screens
38. Most commonly used film - compromise between graininess and speed (detail)
2
scatter radiation
medium film
fogging
39. Measures the power of penetrability (quality) of the x-rays produced
reflective layer
silver halide
6 ft
kVp
40. A lightproof encasement designed to hold x-ray film and intensifying screens in close contact
higher mA
rare earth elements
cassette
mAs
41. Lead equivalent for apron
true
0.25mm
fogging
lines per centimeter
42. Extra pain is also called
inversely proportional
hyperesthesia
10 cm
cassette
43. Within the collimator outlines just how much is collimated
light source
screen film
cervical
black
44. The greater the number of electrons released
the higher the mA
visible light
stops peristalsis
nucleus pulposis
45. Film with silver crystals that is more sensitive to fluorescent light emitted from intensifying screens than to ionizing radiation
kVp
screen film
AgBr
fast
46. If the x-ray tube is not 36-40 inches from the grid - this is called the
afterglow
1/30
increase density
grid cutoff
47. 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)
rapidly dividing
arthritis
genetic damage
calcium tungstate
48. What type of cystogram uses air and hypaque
10
stops peristalsis
more x-rays produced
double contrast
49. Animal has broken femur - it's ideal to have How many radiographs for diagnostic purposes
speed
2
true
focal spot
50. Types of cell damage
indirect relationship
genetic and somatic
increase density
latent image