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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. A living animal - with tissue densities such as fat - muscle - fluid - and air
phosphor layer dyes
lens
black
long scale of contrast
2. If there's bone in the way of an x-ray -. those parts would be
milliamperage
whiter
rotating anode
10 cm
3. What type of film gives more detailed radiographs but more exposure to everyone involved? (commonly used as dental film - or for extremities)
non-screen
film cassette
fast film
density
4. A grid must be used on the chest if it's 11cm thick
2
line focus principle
false
NYS Public Health Law #225
5. Areas on film that should be black but come out grey - due to storage
mAs
fogging
short scale of contrast
stationary anode
6. Improper centering of grid is one reason for
15% rule for kVp
the sharper the radiograph
fogging
grid cutoff
7. Types of cell damage
non-screen film
fast film
genetic and somatic
slow
8. If barium leaks into the abdomen or lungs - it can cause what
kVp
abnormalities
annulus fibrosis
inflammation an granuloma
9. Film that is more sensitive to ionizing radiation than to fluorescent light
peak kilovoltage
white
non-screen film
thoracic(caudal) and lumbar
10. Is determined by the ratio of the height of the lead strips to the distance between them
5
decrease scatter radiation
grid efficiency
true
11. Aluminum filter
santes' rule
white
decrease scatter radiation
focal spot
12. We ideally take a radiograph of the abdomen at the peak of inspiration
latent image
false
increase density
cathode
13. The 2 types of collimators are
screens (phosphor layer)
lines per centimeter
screens (phosphor layer)
lead cone and adjustable lead shutters
14. Increased thickness of this leads to increased x-ray absorption and increased visible light emission from the crystals
screens (phosphor layer)
stops peristalsis
phosphor layer
whiter
15. Must change if the FFD changes
mAs
dosimeter
x-rays
grid cutoff
16. Between density and mAs
2.5
back scatter
direct relationship
true
17. 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
aluminum
no contrast
primary
18. KVp=(2x thickness of body part in cm) + 40
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183
19. Give a 25% barium solution for upper GI series - and give At what dose?
medium or par
electrons
erythema
3cc/#
20. The type of collimator that we have here
adjustable lead shutters
medium film
false
focal spot
21. We are supposed to use a grid if the abdomen is greater than or equal to......
supercoat
paresis
higher mA
10 cm
22. White against black - like the x-ray of a plain skeleton
abnormalities
short scale of contrast
true
fluoroscopy
23. Weakness
potter-bucky diagram
6 ft
paresis
joint mouse
24. DJD is also called
no contrast
quantum mottle
arthritis
rare earth elements
25. 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)
white
calcium tungstate
supercoat
grid cutoff
26. A layer of intensifying screen that reflects the light from the phosphor layer toward the film
15 cm
reflective layer
double mAs
back scatter
27. What is the difference between fluoroscopy and a regular radiograph
electrons
white and black are reversed
1/30
non-screen film
28. The exact area of the anode that the electrons hit
grid focus
focal spot
annulus fibrosis
0.5mm
29. Lung tissue appears black (radiolucent) on a radiograph
more light
true
NYS Public Health Law #225
white
30. Size film we use here
phosphor layer
light source
14 x 17
slow
31. To double the density
focal spot
quantum mottle
density
double mAs
32. Has a negative charge
latent image
lens
cathode
clinical signs
33. 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
cathode filament
rotating anode
intussusception
lines per centimeter
34. Is the measurement for the maximum energy available at that setting
white
peak kilovoltage
increase density
Maximum Permissible Dose
35. Is the electrical current that heats the filament
wide latitude film
milliamperage
narrow latitude film
electrons
36. Measures the power of penetrability (quality) of the x-rays produced
heel effect
non-screen film
kVp
screens (phosphor layer)
37. Tilting of the tube or grid is one reason for
grid cutoff
focal spot
screen film
mAs
38. What is the term for an unknown cause
true
idiopathic
40
grid cutoff
39. Has a filament made of tungsten - due to the high melting point
anode
mAs
cathode and anode
grid focus
40. Can cause damage to living cells through the process of excitation or ionization of electrons in the orbits around atoms
2
true
white and black are reversed
x-rays
41. With what kind of typical film do we get 95% exposure due to visible light and 5% is due to the x-rays directly
lead cone and adjustable lead shutters
cervical
screen film
density
42. The back of the cassette is made of lead to decrease....
milliamperage
false
wide latitude film
back scatter
43. Must be radiolucent
genetic and somatic
cathode filament
film cassette
thoracic(caudal) and lumbar
44. Extra pain is also called
electrons
high contrast
mAs
hyperesthesia
45. Crystals + x-rays = ?
visible light
x-rays
3cc/#
mAs
46. What type of bone tumors started elsewhere and spread to the location it was found
secondary
3cc/#
abnormalities
inflammation an granuloma
47. This stage of pregnancy is the most dangerous for the fetus
osteomyelitis
2
hyperesthesia
first trimester
48. Is influenced by quantity of x-rays(mAs) - quality of x-rays (kVp) - type and thickness of tissue being x-rayed
15 cm
grid cutoff
screen film
density
49. Positive contrast agents appear what color on a radiograph
effective focal spot
wobblers syndrome
white
15 cm
50. Has a positive charge
non-screen film
sensitive cells
the higher the mA
anode