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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. Weakness
paresis
phosphor type
SOP
non-screen
2. They don't move - they're found in dental units and portable units - cannot withstand the heat produced from large units
fast
somatic damage
stationary anode
grey
3. Measures the power of penetrability (quality) of the x-rays produced
focal spot
10 cm
1/30
kVp
4. The effective focal spot is only 1/3 the size of the actual focal spot. this is called the
false
line focus principle
cathode
increase density
5. What is one of the most common areas of occurance for spinal problems ( 85% dachshunds)
line focus principle
highest mA and smallest time fraction
reflective layer
thoracic(caudal) and lumbar
6. Is influenced by quantity of x-rays(mAs) - quality of x-rays (kVp) - type and thickness of tissue being x-rayed
potter-bucky diagram
0.5mm
density
intussusception
7. The back of the cassette is made of lead to decrease....
true
mAs
back scatter
abnormalities
8. With the heel effect - more x-rays tend to be in the beam toward this end of the tube
the sharper the radiograph
cathode
false
AgBr
9. What are the 2 types of anodes
stationary and rotating
white
more light
whiter
10. Film with: ultra speed - grainier image - less exposure needed
anode
fast film
non-screen film
hyperesthesia
11. MAs for extremities
screen film
true
slow film
5
12. Increase mAs and kVp in order to...
speed
arthritis
increase density
higher mA
13. MAs for abdomen (standard mAs) x=?
screen film
hyperesthesia
non-screen film
5
14. Outer layer of disk ( dries out and cracks and causes disk to herniate)
cathode and anode
annulus fibrosis
aluminum
non-screen film
15. What is the term for when the animal's bowel engulfs a piece of bowel distal to it - causing blockage
rotating anode
intussusception
cathode filament
black
16. The mAs has to do with the power of the x-rays produced
1/30
lens
false
paresis
17. MAs for ANY part - when using a grid 3x= ?
true
6 ft
non-screen film
15
18. Screen speed is.....to the exposure required to cause it to flouresce
10
false
nucleus pulposis
inversely proportional
19. What type of film has the x-rays directly cause the latent image to be formed
genetic damage
focal spot
non-screen
true
20. MAs for chest 1/2x =?
2
2.5
idiopathic
spondylosis
21. Improper centering of grid is one reason for
pneumocystogram
x-rays
cathode
grid cutoff
22. The greater the number of electrons released
the higher the mA
heel effect
dosimeter
cathode
23. Infection of a disk - or bone near it
diskospondylitis
true
radiographic detail
x-rays
24. When a body part is greater than or equal to.....you should use a grid
10 cm
kVp
paralysis
x-rays
25. Areas on film that should be black but come out grey - due to storage
false
4 ft
fogging
0.5mm
26. Between density and kVp
x-rays
erythema
paralysis
indirect relationship
27. A layer of intensifying screen that reflects the light from the phosphor layer toward the film
reflective layer
fluoroscopy
true
mAs
28. Gelatinous center of disk - pinches spinal cord to cause herniated disk
the sharper the radiograph
mAs
higher mA
nucleus pulposis
29. The tendency of a luminescent compound to continue to give off light after x-radiation has stopped
mAs
fast
afterglow
SOP
30. When more electrons hit the focal spot on the anode
2
stops peristalsis
more x-rays produced
potter-bucky diagram
31. Is responsible for the number or quantity of x-rays
thoracic(caudal) and lumbar
double contrast
cathode
mAs
32. Is located in a focusing cup made of molybdenum which has a high melting point and helps to direct the electrons produced toward the cathode
line focus principle
cathode filament
genetic and somatic
short scale of contrast
33. Must change if the FFD changes
decrease scatter radiation
fogging
mAs
effective focal spot
34. A clear protective layer on radiographic film
supercoat
non-screen film
grid cutoff
intussusception
35. Hairloss or baldness
milliamperage
joint mouse
nucleus pulposis
alopecia
36. Film with: high detail - minimal graininess - increased exposure
non-screen
slow film
cathode
heel effect
37. If barium leaks into the abdomen or lungs - it can cause what
increase density
40
inflammation an granuloma
focal spot
38. Can cause damage to living cells through the process of excitation or ionization of electrons in the orbits around atoms
scatter radiation
x-rays
non-screen
effective focal spot
39. Lung tissue appears black (radiolucent) on a radiograph
true
back scatter
grid cutoff
fast
40. The distance from the x-ray tube to the x-ray machine is the SID (source image distance) - or the FFD (also known as....)
dosimeter
focal film distance
long scale of contrast
highest mA and smallest time fraction
41. Increased thickness of this leads to increased x-ray absorption and increased visible light emission from the crystals
phosphor layer
increase density
10
osteomyelitis
42. Increase developing time and temp of developing fluid
double contrast
intensifying screens
stops peristalsis
increase density
43. Aluminum filter
AgBr
back scatter
focal spot
decrease scatter radiation
44. General purpose film - forgiving
2
wide latitude film
inverse square law
arthritis
45. Extra pain is also called
hyperesthesia
high contrast
osteomyelitis
focal spot
46. As this increases - the intensity of the x-ray beam decreases - so the beam intensity increases - and the mAs must decrease to compensate
FFD
santes' rule
focal spot
lens
47. The shorter the wavelength of the x-ray - the more powerful the x-ray is
luxations
x-rays
true
grid efficiency
48. What type of films need a lot more x-ray exposure and more time to expose them
long scale of contrast
true
hypaque
non-screen
49. What must have little or no 'afterglow'
false
increase density
screens (phosphor layer)
secondary
50. Is only 1/3 the size of the actual focal spot
slow
effective focal spot
radiographic detail
focal spot