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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. When processing film - the black areas are made of
15
white and black are reversed
inversely proportional
metallic silver
2. Aluminum filter
1/30
x-rays
decrease scatter radiation
scatter radiation
3. Types of grids
iodine
40
focused and unfocused or parallel
indirect relationship
4. Can cause damage to living cells through the process of excitation or ionization of electrons in the orbits around atoms
osteomyelitis
increase density
x-rays
secondary
5. Increase what value to penetrate thick body parts
lens
grid efficiency
kVp
black
6. This is inversely proportional to screen speed
radiographic detail
cervical
somatic damage
fixer
7. Has a filament made of tungsten - due to the high melting point
cathode and anode
reflective layer
focused and unfocused or parallel
large crystals - small crystals
8. Redness of the skin
inversely proportional
scatter radiation
erythema
mAs
9. KVp=(2x thickness of body part in cm) + 40
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183
10. Rotating anode
15 cm
fast
grid cutoff
decrease scatter radiation
11. Is determined by the ratio of the height of the lead strips to the distance between them
0.25mm
effective focal spot
direct relationship
grid efficiency
12. Increased thickness of this leads to increased x-ray absorption and increased visible light emission from the crystals
phosphor layer
kVp or mAs
white and black are reversed
afterglow
13. A type of electromagnetic radiation which have a shorter wavelength than visible light
x-rays
false
long scale of contrast
santes' rule
14. A living animal - with tissue densities such as fat - muscle - fluid - and air
false
non-screen film
long scale of contrast
focal spot
15. If there's far or muscle in the way of an x-ray - those parts would be
silver halide
film cassette
grey
arthritis
16. The layer of the film where the action occurs
slow film
nucleus pulposis
AgBr
sensitive cells
17. Extra pain is also called
14 x 17
unexposed AgBr
grey
hyperesthesia
18. Distance from the grid to the x-ray tube (36-40 inches)
grid focus
film cassette
cathode
stationary and rotating
19. NYSVMS Facility Accreditation Standards
false
scatter radiation
direct relationship
NYS Public Health Law #225
20. Bone - lymphatic cells - epitheilial - and hemopoietic cells are also what kind of cell?
15 cm
sensitive cells
true
false
21. This is used to take 'real-time' radiographs - used a lot in horses
inverse square law
fluoroscopy
silver halide
0.5mm
22. 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)
focused and unfocused or parallel
screens (phosphor layer)
mAs
calcium tungstate
23. Radiographic signs dont always agree with what
peak kilovoltage
clinical signs
fluoroscopy
focal spot
24. This number in santes' rule refers to the distance the x-ray tube is from the x-ray film
40
large crystals - small crystals
high contrast
FFD
25. To utilize this - you position the thickest part of the animal towards the cathode end of the x-ray tube
heel effect
non-screen
annulus fibrosis
decrease scatter radiation
26. What are the 2 types of anodes
14 x 17
inflammation an granuloma
nucleus pulposis
stationary and rotating
27. These cells are the most sensitive to radiation
movement
slow
rapidly dividing
anode
28. Why do we not give atropine with a contrast radiograph
stops peristalsis
40
false
screens (phosphor layer)
29. If the kVp is increased by 15% - the density is doubled
stops peristalsis
line focus principle
15% rule for kVp
grid cutoff
30. What is the term for a negative contrast cystogram where we inject air
primary
visible light
pneumocystogram
direct relationship
31. Has a negative charge
stationary anode
5
latent image
cathode
32. General purpose film - forgiving
wide latitude film
spondylosis
3cc/#
more light
33. Between density and kVp
anode
indirect relationship
10
cathode and anode
34. If the thorax is greater than or equal to....you should use a grid
15 cm
idiopathic
non-screen
reflective layer
35. Extra vertebrae - scoliosis - fused vertebrae are all examples of
rotating anode
decrease scatter radiation
abnormalities
white
36. Is the density difference between 2 adjacent areas on a radiograph
focused and unfocused or parallel
focal spot
contrast
grid cutoff
37. Collimator
slow film
black
paralysis
decrease scatter radiation
38. The shorter the wavelength of the x-ray - the more powerful the x-ray is
scatter radiation
10
true
double mAs
39. Is to the left - electrons bounce off it at a 20 degree angle
fast
rotating anode
anode
reflective layer
40. A layer of intensifying screen that reflects the light from the phosphor layer toward the film
primary
reflective layer
scatter radiation
light source
41. Pigments tend to decrease the lateral spread of light so there is increased detail
short scale of contrast
phosphor layer dyes
cathode filament
decrease scatter radiation
42. What type of film gives more detailed radiographs but more exposure to everyone involved? (commonly used as dental film - or for extremities)
Maximum Permissible Dose
true
supercoat
non-screen
43. If you use an mA of 300 - What time fraction must i use to get an mAs of 10?
1/30
latent image
fluoroscopy
non-screen
44. Safe Operating Procedures
supercoat
quantum mottle
SOP
focal film distance
45. We ideally take a radiograph of the abdomen at the peak of inspiration
the higher the mA
false
anode
white
46. Less forgiving - high contrast - cannot tolerate changes in exposure or processing
narrow latitude film
slow film
reflective layer
fluoroscopy
47. The picture formed after the film has been exposed to x-rays and then processed into a visible image.
fluoroscopy
narrow latitude film
arthritis
radiograph
48. What needs to have high levels of x-ray to light conversion with the correct energy and color for the type of film used
effective focal spot
cathode
lens
screens (phosphor layer)
49. What must have little or no 'afterglow'
calcium tungstate
0.25mm
screens (phosphor layer)
false
50. Sheets of luminescent phosphor crystals bound together and mounted on a cardboard or plastic base
non-screen film
inflammation an granuloma
intensifying screens
rare earth elements
Can you answer 50 questions in 15 minutes?
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