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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. Gelatinous center of disk - pinches spinal cord to cause herniated disk
highest mA and smallest time fraction
white
nucleus pulposis
thoracic(caudal) and lumbar
2. MAs for chest 1/2x =?
2.5
paresis
x-rays
true
3. When doing a lateral radiograph of the thorax/chest - the x-ray beam should be centered over what specific anatomical landmark
5
kVp
non-screen
caudal border of scapula
4. The picture formed after the film has been exposed to x-rays and then processed into a visible image.
radiograph
1/30
joint mouse
phosphor layer
5. Distance from the grid to the x-ray tube (36-40 inches)
grid focus
radiograph
highest mA and smallest time fraction
true
6. If you use an mA of 300 - What time fraction must i use to get an mAs of 10?
1/30
x-rays
milliamperage
metallic silver
7. Is the device which restricts (narrows) the beam of x-rays as they leave the x-ray machine
collimator
x-rays
more x-rays produced
luxations
8. Screens are classified according to
speed
direct relationship
5
movement
9. General purpose film - forgiving
wide latitude film
density
reflective layer
focal spot
10. The x-ray machine we've been using has a rotating anode
iodine
true
slow
density
11. Aluminum filter
decrease scatter radiation
narrow latitude film
false
0.5mm
12. Film that is more sensitive to ionizing radiation than to fluorescent light
non-screen film
potter-bucky diagram
effective focal spot
2
13. What is the term for when the animal's bowel engulfs a piece of bowel distal to it - causing blockage
paresis
film cassette
supercoat
intussusception
14. What gives off 4 times the amount of light photons than does the calcium tungstate (it gives off green light)
lines per centimeter
rare earth elements
kVp
screen film
15. We ideally take a radiograph of the abdomen at the peak of inspiration
0.5mm
false
grid focus
focused and unfocused or parallel
16. The shorter the wavelength of the x-ray - the more powerful the x-ray is
x-rays
higher mA
cervical
true
17. Slowly growing dividing cells are the most sensitive to the effects of ionizing radiaton
NYS Public Health Law #225
reflective layer
false
highest mA and smallest time fraction
18. Outer layer of disk ( dries out and cracks and causes disk to herniate)
mAs
10 cm
wobblers syndrome
annulus fibrosis
19. What is the name for the cartilage flap in the shoulder joint that has broken free and is floating around in the joint fluid
joint mouse
medium or par
higher mA
double mAs
20. Screen speed is.....to the exposure required to cause it to flouresce
abnormalities
inversely proportional
false
rapidly dividing
21. A lightproof encasement designed to hold x-ray film and intensifying screens in close contact
screen film
cassette
true
40
22. These crystals will turn white/clear when processing film
anode
unexposed AgBr
fast film
electrons
23. 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)
calcium tungstate
genetic damage
false
movement
24. This number in santes' rule refers to the distance the x-ray tube is from the x-ray film
15
40
x-rays
wobblers syndrome
25. Bone - lymphatic cells - epitheilial - and hemopoietic cells are also what kind of cell?
true
phosphor layer
focal spot
sensitive cells
26. If there's far or muscle in the way of an x-ray - those parts would be
grey
5
screens (phosphor layer)
non-screen film
27. Weakness
paresis
10 cm
grid efficiency
focal spot
28. The electrical current sent through the filament to cause this electron release is called
heel effect
screen film
milliamperage
annulus fibrosis
29. The layer of the film where the action occurs
black
AgBr
arthritis
focused and unfocused or parallel
30. What specific part of the eye is cloudy with a cataract
white and black are reversed
lens
rapidly dividing
medium film
31. Pigments tend to decrease the lateral spread of light so there is increased detail
phosphor layer dyes
rapidly dividing
film cassette
long scale of contrast
32. If there's metal in the way of an x-ray - than no x-rays will get through and that part would be
collimator
kVp or mAs
2.5
white
33. In the dark room - the safe light (red light) needs to be at least how far away from the loading bench
screen film
4 ft
wobblers syndrome
x-rays
34. Faster screens/less detail; slower screens/more detail
15% rule for kVp
kVp
large crystals - small crystals
phosphor type
35. What type of film gives more detailed radiographs but more exposure to everyone involved? (commonly used as dental film - or for extremities)
iodine
non-screen
long scale of contrast
6 ft
36. In which processing solution do unionized (green) AgBr crystals get removed from the film
spondylosis
inflammation an granuloma
fixer
secondary
37. Increased crystal size.....
wobblers syndrome
slow
stationary anode
more light
38. Tilting of the tube or grid is one reason for
heel effect
secondary
mAs
grid cutoff
39. A grid must be used on the chest if it's 11cm thick
grid cutoff
narrow latitude film
false
pneumocystogram
40. Legally - a non-pregnant woman is required to hold a HBC dog for radiographs in NYS
grid focus
slow film
false
heel effect
41. Positive contrast agents appear what color on a radiograph
rare earth elements
medium or par
scatter radiation
white
42. Increase mAs and kVp in order to...
increase density
density
non-screen
paresis
43. What are the 2 types of anodes
rare earth elements
higher mA
focal spot
stationary and rotating
44. Lung tissue appears black (radiolucent) on a radiograph
focused and unfocused or parallel
true
slow
decrease scatter radiation
45. Increase developing time and temp of developing fluid
rotating anode
intensifying screens
true
increase density
46. If the kVp is increased by 15% - the density is doubled
15% rule for kVp
alopecia
radiographic detail
non-screen
47. Grid helps reduce the amount of......
scatter radiation
double contrast
screens (phosphor layer)
fluoroscopy
48. What must have little or no 'afterglow'
SOP
Maximum Permissible Dose
screens (phosphor layer)
whiter
49. This pertains to the size of the electron cloud and thus directly to the number of x-ray produced
mAs
long scale of contrast
density
focused and unfocused or parallel
50. Calcium 'bridges' between adjacent vertebrae
15
narrow latitude film
spondylosis
2