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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. Slowly growing dividing cells are the most sensitive to the effects of ionizing radiaton
false
paralysis
lens
cathode
2. MAs for abdomen (standard mAs) x=?
5
screens (phosphor layer)
short scale of contrast
reflective layer
3. Refers to the 'blackness' of a radiograph
non-screen film
density
black
somatic damage
4. The effective focal spot is only 1/3 the size of the actual focal spot. this is called the
0.5mm
x-rays
long scale of contrast
line focus principle
5. Bone - lymphatic cells - epitheilial - and hemopoietic cells are also what kind of cell?
heel effect
sensitive cells
collimator
black
6. Ideally is very small
somatic damage
grey
focal spot
FFD
7. Extra pain is also called
santes' rule
grid focus
inversely proportional
hyperesthesia
8. Extra vertebrae - scoliosis - fused vertebrae are all examples of
abnormalities
false
non-screen film
density
9. If perforation is suspected - what compound do we use when radiographing
false
black
iodine
white
10. This is inversely proportional to screen speed
radiographic detail
metallic silver
caudal border of scapula
indirect relationship
11. Body cells affected - damage seen during lifetime of creature - can be immediate or cummulative
somatic damage
black
intensifying screens
lens
12. The efficiency of this reflects light made by phosphors back towards the film
40
screens (phosphor layer)
reflective layer
screen film
13. Rotating anode
afterglow
non-screen film
radiograph
decrease scatter radiation
14. Tilting of the tube or grid is one reason for
grid cutoff
lines per centimeter
0.5mm
fluoroscopy
15. AgBr + x-rays =
non-screen film
phosphor type
2
Maximum Permissible Dose
16. With the heel effect - more x-rays tend to be in the beam toward this end of the tube
cathode
short scale of contrast
3cc/#
screen film
17. Is responsible for the number or quantity of x-rays
false
mAs
increase density
kVp
18. Positive contrast agents appear what color on a radiograph
white
contrast
15% rule for kVp
focused and unfocused or parallel
19. Within the collimator outlines just how much is collimated
density
high contrast
light source
large crystals - small crystals
20. To double the density
screen film
rare earth elements
double mAs
highest mA and smallest time fraction
21. When a body part is greater than or equal to.....you should use a grid
10
abnormalities
rare earth elements
10 cm
22. Why do we not give atropine with a contrast radiograph
hyperesthesia
screens (phosphor layer)
stops peristalsis
peak kilovoltage
23. Collimator
black
long scale of contrast
effective focal spot
decrease scatter radiation
24. What type of bone tumors started in the location they were first found
kVp or mAs
movement
primary
10
25. Improper centering of grid is one reason for
increase density
14 x 17
grid cutoff
paresis
26. Radiograph of a dogs skeleton has a long scale of contrast
movement
false
supercoat
sensitive cells
27. The tendency of a luminescent compound to continue to give off light after x-radiation has stopped
x-rays
spondylosis
afterglow
paralysis
28. Must be radiolucent
film cassette
abnormalities
direct relationship
kVp
29. Dislocations or separations
adjustable lead shutters
decrease scatter radiation
focal spot
luxations
30. An abdominal radiograph should be taken at the peak of expiration
6 ft
reflective layer
true
density
31. Pigments tend to decrease the lateral spread of light so there is increased detail
non-screen film
mAs
screen film
phosphor layer dyes
32. If the x-ray tube is not 36-40 inches from the grid - this is called the
potter-bucky diagram
true
grid cutoff
the higher the mA
33. Film with: high detail - minimal graininess - increased exposure
false
scatter radiation
slow film
true
34. Must change if the FFD changes
unexposed AgBr
screen film
decrease scatter radiation
mAs
35. Can cause damage to living cells through the process of excitation or ionization of electrons in the orbits around atoms
cathode
x-rays
more light
10 cm
36. Film with: ultra speed - grainier image - less exposure needed
aluminum
fast film
santes' rule
false
37. NYSVMS Facility Accreditation Standards
white
short scale of contrast
cathode
NYS Public Health Law #225
38. DJD is also called
cathode
medium film
kVp
arthritis
39. Increase developing time and temp of developing fluid
focal spot
phosphor type
increase density
medium film
40. Animal has broken femur - it's ideal to have How many radiographs for diagnostic purposes
effective focal spot
rapidly dividing
2
false
41. When the AgBr reacts and ionizes with light or x-rays - than at this point - What is on the film is known as the
latent image
somatic damage
cathode
grid cutoff
42. A lightproof encasement designed to hold x-ray film and intensifying screens in close contact
cassette
AgBr
kVp
light source
43. Is to the left - electrons bounce off it at a 20 degree angle
anode
10 cm
secondary
phosphor type
44. Radiographic signs dont always agree with what
grid
supercoat
non-screen
clinical signs
45. Growth - gonadal - neoplastic - and metabolically active cells are what kind of cells
grey
latent image
5
rapidly dividing
46. Cassettes can be made of.....Which is the type here - or they can be made of magnesium - vinyl - etc
aluminum
grid
heel effect
no contrast
47. Increased thickness of this leads to increased x-ray absorption and increased visible light emission from the crystals
aluminum
phosphor layer
film cassette
2.5
48. The picture formed after the film has been exposed to x-rays and then processed into a visible image.
radiograph
light source
15
joint mouse
49. The type of collimator that we have here
indirect relationship
intensifying screens
15% rule for kVp
adjustable lead shutters
50. Screens are classified according to
SOP
2.5
slow
speed