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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. If the x-ray tube is not 36-40 inches from the grid - this is called the
mAs
grid cutoff
metallic silver
paresis
2. When a body part is greater than or equal to.....you should use a grid
10 cm
grid cutoff
phosphor layer
double contrast
3. We should always try and stay How many feet from our x-ray machine
6 ft
5
true
mAs
4. DJD is also called
cathode
cathode
arthritis
first trimester
5. 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
paralysis
true
intensifying screens
electrons
6. What is the term for the spotty appearance on the film due to the large crystals in the screens
sensitive cells
density
kVp or mAs
quantum mottle
7. Rotating anode
secondary
decrease scatter radiation
false
supercoat
8. Size film we use here
14 x 17
kVp or mAs
focused and unfocused or parallel
film cassette
9. The focused grid is upside down - is one reason for
narrow latitude film
grid cutoff
non-screen
quantum mottle
10. Is the density difference between 2 adjacent areas on a radiograph
contrast
6 ft
cathode
rare earth elements
11. MAs for abdomen (standard mAs) x=?
more x-rays produced
slow film
5
thoracic(caudal) and lumbar
12. Has a positive charge
primary
grid
anode
cathode
13. Give a 25% barium solution for upper GI series - and give At what dose?
arthritis
line focus principle
no contrast
3cc/#
14. Gelatinous center of disk - pinches spinal cord to cause herniated disk
radiograph
nucleus pulposis
wide latitude film
true
15. When processing film - the black areas are made of
true
iodine
metallic silver
grid efficiency
16. Is the source of electrons
sensitive cells
aluminum
wide latitude film
cathode
17. Positive contrast agents appear what color on a radiograph
potter-bucky diagram
whiter
white
10 cm
18. Must be radiolucent
line focus principle
0.5mm
film cassette
14 x 17
19. Is the measurement for the maximum energy available at that setting
peak kilovoltage
grid efficiency
kVp
stationary anode
20. If the kVp is too low
2
15 cm
no contrast
focal spot
21. Radiographic signs dont always agree with what
annulus fibrosis
slow film
clinical signs
speed
22. With what kind of typical film do we get 95% exposure due to visible light and 5% is due to the x-rays directly
anode
line focus principle
screen film
wobblers syndrome
23. Cassettes can be made of.....Which is the type here - or they can be made of magnesium - vinyl - etc
aluminum
clinical signs
genetic and somatic
scatter radiation
24. Old mAs x (new FFD)2 divided by (old FFD)2
inverse square law
grid cutoff
paresis
milliamperage
25. What type of film has the x-rays directly cause the latent image to be formed
grid efficiency
the higher the mA
clinical signs
non-screen
26. Another result of the 20 degree angling
heel effect
movement
unexposed AgBr
40
27. What type of films need a lot more x-ray exposure and more time to expose them
10
15% rule for kVp
potter-bucky diagram
non-screen
28. General purpose film - forgiving
long scale of contrast
wide latitude film
highest mA and smallest time fraction
lines per centimeter
29. Negative contrast agents appear what color on a radiograph
phosphor layer dyes
luxations
black
true
30. X-ray machines come with a set one - we cannot adjust it
focal spot
15 cm
2
calcium tungstate
31. The x-ray machine we've been using has a rotating anode
reflective layer
true
inflammation an granuloma
false
32. These screens have increased definition/detail - need to have increased radiation exposure
rare earth elements
more x-rays produced
radiographic detail
slow
33. If the kVp is too high
radiograph
black
lens
increase scatter
34. Collimator
x-rays
decrease scatter radiation
paralysis
caudal border of scapula
35. Film with: high detail - minimal graininess - increased exposure
slow film
milliamperage
SOP
caudal border of scapula
36. What are the 2 types of anodes
5
stationary and rotating
quantum mottle
4 ft
37. Is influenced by quantity of x-rays(mAs) - quality of x-rays (kVp) - type and thickness of tissue being x-rayed
kVp
true
density
spondylosis
38. The greater the number of electrons released
the higher the mA
grid cutoff
caudal border of scapula
decrease scatter radiation
39. Lead equivalent for thyroid sheild
genetic damage
false
0.5mm
black
40. What is the term for a negative contrast cystogram where we inject air
fast
nucleus pulposis
caudal border of scapula
pneumocystogram
41. Redness of the skin
collimator
erythema
paralysis
15% rule for kVp
42. Has a filament made of tungsten - due to the high melting point
screen film
speed
cathode and anode
electrons
43. Outer layer of disk ( dries out and cracks and causes disk to herniate)
focused and unfocused or parallel
luxations
NYS Public Health Law #225
annulus fibrosis
44. There are......intensifying screens within a cassette
screen film
true
high contrast
2
45. AgBr + light =
inverse square law
screen film
nucleus pulposis
black
46. A living animal - with tissue densities such as fat - muscle - fluid - and air
inverse square law
supercoat
long scale of contrast
focused and unfocused or parallel
47. Means more electrons will be released from the filament and directed at the anode
kVp
higher mA
increase density
white
48. Must change if the FFD changes
grid cutoff
intensifying screens
mAs
increase density
49. Sheets of luminescent phorphor crystals on a cardboard or plastic base
mAs
luxations
intensifying screens
focal spot
50. Less forgiving - high contrast - cannot tolerate changes in exposure or processing
narrow latitude film
14 x 17
wide latitude film
15 cm