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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. KVp=(2x thickness of body part in cm) + 40
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on line
183
2. Lung tissue appears black (radiolucent) on a radiograph
5
false
true
contrast
3. Is on the anode and is angled at approximately 20 degrees from vertical
double contrast
focal spot
FFD
AgBr
4. NYSVMS Facility Accreditation Standards
false
SOP
NYS Public Health Law #225
10
5. Loss of movement in legs (front and/or back)
1/30
paralysis
metallic silver
3cc/#
6. What type of films need a lot more x-ray exposure and more time to expose them
radiograph
non-screen
osteomyelitis
non-screen film
7. A lightproof encasement designed to hold x-ray film and intensifying screens in close contact
density
cassette
spondylosis
false
8. This pertains to the size of the electron cloud and thus directly to the number of x-ray produced
false
mAs
nucleus pulposis
lens
9. Types of grids
intensifying screens
decrease scatter radiation
focused and unfocused or parallel
osteomyelitis
10. What specific part of the eye is cloudy with a cataract
first trimester
mAs
fast film
lens
11. Grid helps reduce the amount of......
osteomyelitis
speed
the higher the mA
scatter radiation
12. We are supposed to use a grid if the abdomen is greater than or equal to......
light source
anode
10 cm
density
13. The mAs has to do with the power of the x-rays produced
short scale of contrast
fluoroscopy
line focus principle
false
14. Most commonly used film - compromise between graininess and speed (detail)
cathode
medium film
aluminum
radiograph
15. Sheets of luminescent phorphor crystals on a cardboard or plastic base
white and black are reversed
white
intensifying screens
nucleus pulposis
16. What needs to have high levels of x-ray to light conversion with the correct energy and color for the type of film used
screens (phosphor layer)
paralysis
6 ft
anode
17. If perforation is suspected - what compound do we use when radiographing
focal film distance
clinical signs
iodine
5
18. Lead equivalent for thyroid sheild
cathode and anode
radiograph
medium film
0.5mm
19. Sheets of luminescent phosphor crystals bound together and mounted on a cardboard or plastic base
lead cone and adjustable lead shutters
true
secondary
intensifying screens
20. With the heel effect - more x-rays tend to be produced toward the cathode end
true
screen film
non-screen film
false
21. 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
decrease scatter radiation
direct relationship
cathode
rotating anode
22. What type of bone tumors started in the location they were first found
decrease scatter radiation
primary
clinical signs
increase scatter
23. Screen speed is.....to the exposure required to cause it to flouresce
inversely proportional
true
mAs
increase scatter
24. Cassettes can be made of.....Which is the type here - or they can be made of magnesium - vinyl - etc
spondylosis
NYS Public Health Law #225
erythema
aluminum
25. What is one of the most common area of occurance for spinal problems (15% dobermans)
cervical
screens (phosphor layer)
screens (phosphor layer)
density
26. 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
lead cone and adjustable lead shutters
lens
increase density
27. Aluminum filter
alopecia
decrease scatter radiation
screen film
anode
28. If the x-ray tube is not 36-40 inches from the grid - this is called the
grid cutoff
screen film
increase density
x-rays
29. What is the name for the cartilage flap in the shoulder joint that has broken free and is floating around in the joint fluid
nucleus pulposis
latent image
cathode
joint mouse
30. Hairloss or baldness
10 cm
alopecia
focal spot
inflammation an granuloma
31. When processing film - the black areas are made of
electrons
phosphor layer dyes
decrease scatter radiation
metallic silver
32. Amount of radiation a person can recieve in a calendar year
double mAs
highest mA and smallest time fraction
Maximum Permissible Dose
visible light
33. What are the 2 types of anodes
SOP
heel effect
stationary and rotating
2
34. This stage of pregnancy is the most dangerous for the fetus
grid focus
stationary and rotating
first trimester
heel effect
35. What must have little or no 'afterglow'
fast
heel effect
calcium tungstate
screens (phosphor layer)
36. The electrical current sent through the filament to cause this electron release is called
2
supercoat
milliamperage
1/30
37. What type of film gives more detailed radiographs but more exposure to everyone involved? (commonly used as dental film - or for extremities)
15
cervical
kVp
non-screen
38. Increase developing time and temp of developing fluid
paralysis
0.5mm
15
increase density
39. As this increases - the intensity of the x-ray beam decreases - so the beam intensity increases - and the mAs must decrease to compensate
cassette
FFD
SOP
paralysis
40. Bone infection - also known as spondylitis
mAs
highest mA and smallest time fraction
osteomyelitis
thoracic(caudal) and lumbar
41. Calcium 'bridges' between adjacent vertebrae
spondylosis
false
white
x-rays
42. Lead equivalent for apron
inverse square law
focal spot
0.25mm
screens (phosphor layer)
43. Is the density difference between 2 adjacent areas on a radiograph
2
15 cm
contrast
white and black are reversed
44. If the kVp is increased by 15% - the density is doubled
stationary and rotating
medium film
15% rule for kVp
decrease scatter radiation
45. Incorrect grid focus is one reason for
true
grid cutoff
true
milliamperage
46. A living animal - with tissue densities such as fat - muscle - fluid - and air
AgBr
long scale of contrast
narrow latitude film
higher mA
47. Increase mAs and kVp in order to...
increase density
black
false
kVp
48. To double the density
focal spot
true
cathode and anode
double mAs
49. This is caused by mutations in gonadal cells - not seen until offspring are produced - mutations are not always bad
genetic damage
10 cm
grid cutoff
reflective layer
50. Are produced when electrons are slowed down or stopped by atoms in the target area where they are aimed
mAs
screens (phosphor layer)
10
x-rays
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