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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. Collimator
non-screen
decrease scatter radiation
latent image
potter-bucky diagram
2. To double the density
nucleus pulposis
double mAs
x-rays
density
3. The exact area of the anode that the electrons hit
2
focal spot
scatter radiation
non-screen
4. When the AgBr reacts and ionizes with light or x-rays - than at this point - What is on the film is known as the
grid cutoff
density
no contrast
latent image
5. Film with: high detail - minimal graininess - increased exposure
15
true
latent image
slow film
6. What type of film gives more detailed radiographs but more exposure to everyone involved? (commonly used as dental film - or for extremities)
non-screen
erythema
40
kVp
7. Safe Operating Procedures
hyperesthesia
SOP
aluminum
electrons
8. Infection of a disk - or bone near it
decrease scatter radiation
effective focal spot
diskospondylitis
collimator
9. Increased thickness of this leads to increased x-ray absorption and increased visible light emission from the crystals
mAs
true
hypaque
phosphor layer
10. Another result of the 20 degree angling
arthritis
highest mA and smallest time fraction
heel effect
afterglow
11. AgBr + light =
screen film
non-screen
increase density
sensitive cells
12. The shorter the wavelength of the x-ray - the more powerful the x-ray is
diskospondylitis
true
phosphor layer
grid cutoff
13. The distance from the x-ray tube to the x-ray machine is the SID (source image distance) - or the FFD (also known as....)
screen film
rare earth elements
cassette
focal film distance
14. These screens have increased definition/detail - need to have increased radiation exposure
speed
slow
stationary anode
sensitive cells
15. What type of film has the x-rays directly cause the latent image to be formed
non-screen
wobblers syndrome
more x-rays produced
back scatter
16. White against black - like the x-ray of a plain skeleton
short scale of contrast
cathode
arthritis
long scale of contrast
17. This gives you the desired mAs - and it gives less time for your patient to move
density
film cassette
highest mA and smallest time fraction
line focus principle
18. If the kVp is too low
erythema
no contrast
electrons
short scale of contrast
19. If there's far or muscle in the way of an x-ray - those parts would be
rapidly dividing
stationary anode
indirect relationship
grey
20. Within the collimator outlines just how much is collimated
metallic silver
stationary and rotating
true
light source
21. Is determined by the ratio of the height of the lead strips to the distance between them
0.25mm
adjustable lead shutters
grid efficiency
spondylosis
22. Is on the anode and is angled at approximately 20 degrees from vertical
focal spot
whiter
fluoroscopy
inflammation an granuloma
23. Does move - has disks that rotate at high speeds - this helps spread out the heat that's produced as the electrons hit the focal spot
fogging
hyperesthesia
rotating anode
non-screen
24. We should always try and stay How many feet from our x-ray machine
true
kVp or mAs
wobblers syndrome
6 ft
25. Positive contrast agents appear what color on a radiograph
back scatter
2
white
focal film distance
26. What needs to have high levels of x-ray absorbtion
true
screens (phosphor layer)
afterglow
dosimeter
27. An abdominal radiograph should be taken at the peak of expiration
arthritis
true
decrease scatter radiation
high contrast
28. A...is a series of lead strips on edge which only allow the primary x-rays - which are traveling in straight lines - reach the film
decrease scatter radiation
fast
grid
screen film
29. Bone infection - also known as spondylitis
SOP
osteomyelitis
genetic damage
sensitive cells
30. Bone - lymphatic cells - epitheilial - and hemopoietic cells are also what kind of cell?
false
sensitive cells
6 ft
grid cutoff
31. Loss of movement in legs (front and/or back)
whiter
quantum mottle
paralysis
0.5mm
32. Amount of radiation a person can recieve in a calendar year
Maximum Permissible Dose
paresis
aluminum
milliamperage
33. Is to the left - electrons bounce off it at a 20 degree angle
anode
6 ft
rotating anode
false
34. Between density and mAs
direct relationship
grid cutoff
FFD
aluminum
35. What is the term for when the animal's bowel engulfs a piece of bowel distal to it - causing blockage
calcium tungstate
intussusception
x-rays
black
36. If perforation is suspected - what compound do we use when radiographing
rapidly dividing
focal film distance
medium film
iodine
37. What type of film has no screens or film cassettes
increase density
grid cutoff
inflammation an granuloma
non-screen
38. The tendency of a luminescent compound to continue to give off light after x-radiation has stopped
joint mouse
alopecia
rotating anode
afterglow
39. If the grid is stationary - more lines that are finer are less apt to show up on a radiograph - this is called....
reflective layer
grid
lines per centimeter
anode
40. When processing film - the black areas are made of
5
metallic silver
medium or par
abnormalities
41. When doing a lateral radiograph of the thorax/chest - the x-ray beam should be centered over what specific anatomical landmark
cathode
caudal border of scapula
rapidly dividing
first trimester
42. If the x-ray tube is not 36-40 inches from the grid - this is called the
hyperesthesia
anode
heel effect
grid cutoff
43. If there's metal in the way of an x-ray - than no x-rays will get through and that part would be
6 ft
collimator
lines per centimeter
white
44. Ideally is very small
15 cm
40
false
focal spot
45. A clear protective layer on radiographic film
supercoat
short scale of contrast
true
6 ft
46. What specific part of the eye is cloudy with a cataract
non-screen
lens
speed
false
47. On a lateral view of the chest the aorta is dorsal to the caudal vena cava
intensifying screens
cathode and anode
true
annulus fibrosis
48. Film with silver crystals that is more sensitive to fluorescent light emitted from intensifying screens than to ionizing radiation
kVp or mAs
anode
quantum mottle
screen film
49. Film that is more sensitive to ionizing radiation than to fluorescent light
non-screen film
adjustable lead shutters
cassette
FFD
50. A lightproof encasement designed to hold x-ray film and intensifying screens in close contact
cathode
rare earth elements
cassette
stops peristalsis