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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. The mAs has to do with the power of the x-rays produced
erythema
increase density
false
indirect relationship
2. Is the device which restricts (narrows) the beam of x-rays as they leave the x-ray machine
collimator
lead cone and adjustable lead shutters
first trimester
false
3. This gives you the desired mAs - and it gives less time for your patient to move
highest mA and smallest time fraction
the sharper the radiograph
non-screen
false
4. AgBr + x-rays =
non-screen film
mAs
double mAs
phosphor type
5. These screens are high speed - they decrease exposure - poorer detail - able to penetrate thicker areas
cathode
fast
non-screen
1/30
6. KVp=(2x thickness of body part in cm) + 40
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7. When doing a lateral radiograph of the thorax/chest - the x-ray beam should be centered over what specific anatomical landmark
cathode
nucleus pulposis
caudal border of scapula
anode
8. The back of the cassette is made of lead to decrease....
back scatter
true
kVp
40
9. Is the measurement for the maximum energy available at that setting
heel effect
peak kilovoltage
scatter radiation
rapidly dividing
10. The x-ray machine we've been using has a rotating anode
large crystals - small crystals
clinical signs
x-rays
true
11. With this procedure - no x-ray film is involved at all
anode
adjustable lead shutters
NYS Public Health Law #225
fluoroscopy
12. The 2 types of collimators are
phosphor type
lead cone and adjustable lead shutters
idiopathic
secondary
13. Means more electrons will be released from the filament and directed at the anode
decrease scatter radiation
higher mA
10 cm
focal spot
14. Infection of a disk - or bone near it
diskospondylitis
phosphor layer dyes
visible light
false
15. This stage of pregnancy is the most dangerous for the fetus
anode
3cc/#
first trimester
15 cm
16. Types of grids
electrons
movement
focused and unfocused or parallel
NYS Public Health Law #225
17. If there's far or muscle in the way of an x-ray - those parts would be
lens
grey
potter-bucky diagram
wide latitude film
18. If there's bone in the way of an x-ray -. those parts would be
focal film distance
mAs
whiter
reflective layer
19. Faster screens/less detail; slower screens/more detail
fluoroscopy
inversely proportional
large crystals - small crystals
false
20. These crystals will turn white/clear when processing film
light source
non-screen
unexposed AgBr
short scale of contrast
21. What type of film gives more detailed radiographs but more exposure to everyone involved? (commonly used as dental film - or for extremities)
non-screen
screens (phosphor layer)
film cassette
intensifying screens
22. A clear protective layer on radiographic film
supercoat
grey
lines per centimeter
pneumocystogram
23. Rotating anode
grid
screen film
decrease scatter radiation
light source
24. Has a filament made of tungsten - due to the high melting point
cathode and anode
non-screen
hyperesthesia
true
25. Lung tissue appears black (radiolucent) on a radiograph
true
back scatter
arthritis
light source
26. Is on the anode and is angled at approximately 20 degrees from vertical
focal spot
rapidly dividing
mAs
focal film distance
27. Film that is more sensitive to ionizing radiation than to fluorescent light
pneumocystogram
non-screen film
decrease scatter radiation
anode
28. MAs for extremities
inflammation an granuloma
milliamperage
0.5mm
5
29. A living animal - with tissue densities such as fat - muscle - fluid - and air
long scale of contrast
false
wide latitude film
grid cutoff
30. Increase mAs and kVp in order to...
true
increase density
grid
false
31. Amount of radiation a person can recieve in a calendar year
x-rays
10 cm
Maximum Permissible Dose
heel effect
32. With what kind of typical film do we get 95% exposure due to visible light and 5% is due to the x-rays directly
screen film
15% rule for kVp
spondylosis
false
33. Bone - lymphatic cells - epitheilial - and hemopoietic cells are also what kind of cell?
true
sensitive cells
lines per centimeter
metallic silver
34. They don't move - they're found in dental units and portable units - cannot withstand the heat produced from large units
Maximum Permissible Dose
1/30
alopecia
stationary anode
35. Lead equivalent for thyroid sheild
0.5mm
non-screen film
FFD
non-screen
36. Calcium 'bridges' between adjacent vertebrae
stationary and rotating
more x-rays produced
spondylosis
wide latitude film
37. What needs to have high levels of x-ray to light conversion with the correct energy and color for the type of film used
black
contrast
screens (phosphor layer)
grid cutoff
38. Safe Operating Procedures
SOP
non-screen
false
idiopathic
39. The distance from the x-ray tube to the x-ray machine is the SID (source image distance) - or the FFD (also known as....)
focal film distance
more x-rays produced
kVp or mAs
true
40. If there's metal in the way of an x-ray - than no x-rays will get through and that part would be
white
15 cm
medium or par
unexposed AgBr
41. What gives off 4 times the amount of light photons than does the calcium tungstate (it gives off green light)
rare earth elements
lead cone and adjustable lead shutters
0.5mm
Maximum Permissible Dose
42. Weakness
inflammation an granuloma
movement
paresis
primary
43. If the grid is stationary - more lines that are finer are less apt to show up on a radiograph - this is called....
false
10 cm
true
lines per centimeter
44. Calcium tungstate - rare earth elements
fluoroscopy
wide latitude film
phosphor type
calcium tungstate
45. What must have little or no 'afterglow'
false
secondary
screens (phosphor layer)
focal spot
46. Compound of silver and bromine - chlorine - or iodine - all of which are in the halogen group of elements
silver halide
non-screen
screen film
anode
47. Is the electrical current that heats the filament
thoracic(caudal) and lumbar
milliamperage
cathode
6 ft
48. What is the name for the cartilage flap in the shoulder joint that has broken free and is floating around in the joint fluid
direct relationship
joint mouse
grid efficiency
metallic silver
49. AgBr + light =
mAs
white and black are reversed
screen film
secondary
50. Is influenced by quantity of x-rays(mAs) - quality of x-rays (kVp) - type and thickness of tissue being x-rayed
increase scatter
10 cm
density
dosimeter