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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. Means more electrons will be released from the filament and directed at the anode
false
higher mA
kVp
non-screen
2. 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
stationary and rotating
afterglow
inflammation an granuloma
3. White against black - like the x-ray of a plain skeleton
0.5mm
short scale of contrast
scatter radiation
increase density
4. Rotating anode
film cassette
alopecia
false
decrease scatter radiation
5. When doing a lateral radiograph of the thorax/chest - the x-ray beam should be centered over what specific anatomical landmark
erythema
grid cutoff
heel effect
caudal border of scapula
6. What is the difference between fluoroscopy and a regular radiograph
the higher the mA
potter-bucky diagram
back scatter
white and black are reversed
7. A layer of intensifying screen that reflects the light from the phosphor layer toward the film
reflective layer
15% rule for kVp
phosphor layer dyes
double contrast
8. Must be radiolucent
secondary
rapidly dividing
lead cone and adjustable lead shutters
film cassette
9. Lung tissue appears black (radiolucent) on a radiograph
15% rule for kVp
screen film
1/30
true
10. Less forgiving - high contrast - cannot tolerate changes in exposure or processing
inverse square law
effective focal spot
SOP
narrow latitude film
11. Animal has broken femur - it's ideal to have How many radiographs for diagnostic purposes
mAs
2
x-rays
highest mA and smallest time fraction
12. Ideally is very small
screens (phosphor layer)
fogging
density
focal spot
13. 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
grid
genetic damage
focal spot
grey
14. As this increases - the intensity of the x-ray beam decreases - so the beam intensity increases - and the mAs must decrease to compensate
inversely proportional
3cc/#
clinical signs
FFD
15. Between density and kVp
false
decrease scatter radiation
2.5
indirect relationship
16. If the x-ray tube is not 36-40 inches from the grid - this is called the
3cc/#
focal spot
milliamperage
grid cutoff
17. Refers to the 'blackness' of a radiograph
arthritis
radiograph
false
density
18. The effective focal spot is only 1/3 the size of the actual focal spot. this is called the
line focus principle
grey
quantum mottle
focal spot
19. The x-ray machine we've been using has a rotating anode
peak kilovoltage
fast film
true
phosphor layer dyes
20. Faster screens/less detail; slower screens/more detail
15
large crystals - small crystals
fast
lead cone and adjustable lead shutters
21. To double the density
decrease scatter radiation
0.5mm
double mAs
2
22. Bone - lymphatic cells - epitheilial - and hemopoietic cells are also what kind of cell?
white and black are reversed
slow film
heel effect
sensitive cells
23. Aluminum filter
rapidly dividing
phosphor layer
false
decrease scatter radiation
24. Increased crystal size.....
more light
15 cm
caudal border of scapula
focal spot
25. 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
lead cone and adjustable lead shutters
0.25mm
paresis
rotating anode
26. What type of bone tumors started in the location they were first found
false
primary
1/30
latent image
27. General purpose film - forgiving
spondylosis
wide latitude film
screen film
lines per centimeter
28. The greater the number of electrons released
screen film
white and black are reversed
the higher the mA
screens (phosphor layer)
29. Is the electrical current that heats the filament
0.5mm
white and black are reversed
milliamperage
phosphor type
30. Calcium tungstate - rare earth elements
hypaque
santes' rule
reflective layer
phosphor type
31. Growth - gonadal - neoplastic - and metabolically active cells are what kind of cells
milliamperage
wobblers syndrome
scatter radiation
rapidly dividing
32. The layer of the film where the action occurs
AgBr
x-rays
more light
rapidly dividing
33. Increased thickness of this leads to increased x-ray absorption and increased visible light emission from the crystals
true
double contrast
SOP
phosphor layer
34. Measures the power of penetrability (quality) of the x-rays produced
collimator
santes' rule
kVp
x-rays
35. Radiographic signs dont always agree with what
no contrast
silver halide
clinical signs
FFD
36. Most commonly used film - compromise between graininess and speed (detail)
false
decrease scatter radiation
medium film
black
37. On a lateral view of the chest the aorta is dorsal to the caudal vena cava
true
fixer
scatter radiation
cassette
38. In which processing solution do unionized (green) AgBr crystals get removed from the film
true
intensifying screens
wobblers syndrome
fixer
39. 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)
latent image
kVp
calcium tungstate
grid cutoff
40. In the dark room - the safe light (red light) needs to be at least how far away from the loading bench
cathode
4 ft
x-rays
paralysis
41. If there's far or muscle in the way of an x-ray - those parts would be
cathode
fluoroscopy
grey
2
42. Film with: high detail - minimal graininess - increased exposure
true
slow film
joint mouse
spondylosis
43. What type of film has no screens or film cassettes
non-screen
cathode and anode
wobblers syndrome
15
44. What type of bone tumors started elsewhere and spread to the location it was found
clinical signs
screen film
unexposed AgBr
secondary
45. MAs for ANY part - when using a grid 3x= ?
luxations
15
increase scatter
false
46. Screen speed is.....to the exposure required to cause it to flouresce
inversely proportional
highest mA and smallest time fraction
focal spot
latent image
47. Can cause damage to living cells through the process of excitation or ionization of electrons in the orbits around atoms
x-rays
10 cm
false
pneumocystogram
48. Lead equivalent for apron
0.25mm
radiograph
lead cone and adjustable lead shutters
true
49. Longer wavelengths of electromagnetic radiation have more penetrating power
radiographic detail
phosphor layer
highest mA and smallest time fraction
false
50. Is to the left - electrons bounce off it at a 20 degree angle
anode
x-rays
cathode
40
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