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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. With the heel effect - more x-rays tend to be in the beam toward this end of the tube
potter-bucky diagram
x-rays
fluoroscopy
cathode
2. The electrical current sent through the filament to cause this electron release is called
clinical signs
white
lead cone and adjustable lead shutters
milliamperage
3. With what kind of typical film do we get 95% exposure due to visible light and 5% is due to the x-rays directly
screens (phosphor layer)
short scale of contrast
screen film
electrons
4. White against black - like the x-ray of a plain skeleton
no contrast
short scale of contrast
14 x 17
osteomyelitis
5. The back of the cassette is made of lead to decrease....
reflective layer
back scatter
secondary
focal film distance
6. Dislocations or separations
primary
lines per centimeter
luxations
line focus principle
7. When doing a lateral radiograph of the thorax/chest - the x-ray beam should be centered over what specific anatomical landmark
caudal border of scapula
grid cutoff
hypaque
slow
8. If the grid is stationary - more lines that are finer are less apt to show up on a radiograph - this is called....
lines per centimeter
unexposed AgBr
14 x 17
rare earth elements
9. What type of cystogram uses air and hypaque
double contrast
mAs
dosimeter
wide latitude film
10. Must change if the FFD changes
mAs
grid cutoff
3cc/#
movement
11. These screens are the most common type - they give good resolution with relatively low exposure
5
annulus fibrosis
medium or par
screen film
12. The smaller the focal spot
mAs
10
the sharper the radiograph
density
13. Must increase.....to compensate for x-ray absorption by the grid. (we triple our mAs)
kVp or mAs
false
latent image
false
14. Lead equivalent for apron
movement
0.25mm
peak kilovoltage
electrons
15. Is influenced by quantity of x-rays(mAs) - quality of x-rays (kVp) - type and thickness of tissue being x-rayed
true
density
10 cm
fast
16. We ideally take a radiograph of the abdomen at the peak of inspiration
false
screen film
abnormalities
long scale of contrast
17. The focused grid is upside down - is one reason for
grid cutoff
true
slow film
screen film
18. Is the device which restricts (narrows) the beam of x-rays as they leave the x-ray machine
fixer
collimator
kVp
false
19. The effective focal spot is approximately 1/3 the size of the actual focal spot
true
annulus fibrosis
cathode
grid
20. Within the collimator outlines just how much is collimated
5
light source
15
4 ft
21. Pigments tend to decrease the lateral spread of light so there is increased detail
phosphor layer dyes
mAs
the higher the mA
2
22. Compound of silver and bromine - chlorine - or iodine - all of which are in the halogen group of elements
x-rays
santes' rule
phosphor layer dyes
silver halide
23. Infection of a disk - or bone near it
milliamperage
quantum mottle
reflective layer
diskospondylitis
24. If the kVp is too low
no contrast
screen film
cathode
somatic damage
25. An invisible image on the x-ray film Which becomes visible after it has been processed in the manual or automatic processor
reflective layer
non-screen
latent image
fluoroscopy
26. For bladder cystography - we use what contrast material instead of barium
false
5
stationary anode
hypaque
27. Slowly growing dividing cells are the most sensitive to the effects of ionizing radiaton
focal spot
false
pneumocystogram
heel effect
28. Must be radiolucent
stationary anode
milliamperage
film cassette
false
29. Ideally is very small
focal spot
metallic silver
abnormalities
true
30. If the kVp is too high
increase scatter
the sharper the radiograph
spondylosis
screens (phosphor layer)
31. Extra vertebrae - scoliosis - fused vertebrae are all examples of
focal spot
abnormalities
pneumocystogram
visible light
32. Size film we use here
more x-rays produced
increase density
fogging
14 x 17
33. This number in santes' rule refers to the distance the x-ray tube is from the x-ray film
stops peristalsis
intensifying screens
somatic damage
40
34. Film with: ultra speed - grainier image - less exposure needed
phosphor layer dyes
false
wide latitude film
fast film
35. When the AgBr reacts and ionizes with light or x-rays - than at this point - What is on the film is known as the
back scatter
focal film distance
cassette
latent image
36. Weakness
paresis
decrease scatter radiation
heel effect
true
37. Radiographic signs dont always agree with what
mAs
clinical signs
first trimester
hypaque
38. What is the term for the spotty appearance on the film due to the large crystals in the screens
light source
quantum mottle
first trimester
high contrast
39. Longer wavelengths of electromagnetic radiation have more penetrating power
clinical signs
false
decrease scatter radiation
black
40. What is the term for when the animal's bowel engulfs a piece of bowel distal to it - causing blockage
heel effect
the higher the mA
intussusception
thoracic(caudal) and lumbar
41. If there's no object in the way of an x-ray - the picture would be
inversely proportional
rare earth elements
stops peristalsis
black
42. Distance from the grid to the x-ray tube (36-40 inches)
15
white and black are reversed
unexposed AgBr
grid focus
43. When a body part is greater than or equal to.....you should use a grid
metallic silver
10 cm
3cc/#
phosphor type
44. In the dark room - the safe light (red light) needs to be at least how far away from the loading bench
4 ft
long scale of contrast
somatic damage
white
45. Collimator
direct relationship
mAs
15% rule for kVp
decrease scatter radiation
46. What type of bone tumors started elsewhere and spread to the location it was found
intensifying screens
secondary
somatic damage
mAs
47. Film with: high detail - minimal graininess - increased exposure
grey
slow film
non-screen
rapidly dividing
48. As this increases - the intensity of the x-ray beam decreases - so the beam intensity increases - and the mAs must decrease to compensate
fast
intussusception
FFD
false
49. This gives you the desired mAs - and it gives less time for your patient to move
highest mA and smallest time fraction
true
SOP
true
50. Types of cell damage
heel effect
pneumocystogram
genetic and somatic
primary