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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. Film with: ultra speed - grainier image - less exposure needed
collimator
effective focal spot
cathode and anode
fast film
2. The exact area of the anode that the electrons hit
focal spot
unexposed AgBr
non-screen
cathode and anode
3. What spinal problem do doberman's get
wobblers syndrome
false
osteomyelitis
lens
4. Lead equivalent for thyroid sheild
inversely proportional
0.5mm
higher mA
kVp or mAs
5. Incorrect grid focus is one reason for
calcium tungstate
SOP
grid cutoff
intensifying screens
6. Monitors personal exposure to radiation
idiopathic
radiographic detail
erythema
dosimeter
7. If perforation is suspected - what compound do we use when radiographing
cassette
black
light source
iodine
8. 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
large crystals - small crystals
joint mouse
speed
9. Is to the left - electrons bounce off it at a 20 degree angle
whiter
15
anode
rotating anode
10. Growth - gonadal - neoplastic - and metabolically active cells are what kind of cells
cervical
osteomyelitis
decrease scatter radiation
rapidly dividing
11. Pigments tend to decrease the lateral spread of light so there is increased detail
calcium tungstate
phosphor layer dyes
true
screen film
12. Redness of the skin
decrease scatter radiation
narrow latitude film
erythema
caudal border of scapula
13. A lightproof encasement designed to hold x-ray film and intensifying screens in close contact
non-screen
cassette
direct relationship
false
14. Size film we use here
more light
contrast
grid efficiency
14 x 17
15. MAs for chest 1/2x =?
false
luxations
0.25mm
2.5
16. Is determined by the ratio of the height of the lead strips to the distance between them
grid efficiency
true
direct relationship
screen film
17. If the grid is stationary - more lines that are finer are less apt to show up on a radiograph - this is called....
quantum mottle
narrow latitude film
inflammation an granuloma
lines per centimeter
18. The 2 types of collimators are
lead cone and adjustable lead shutters
intensifying screens
focal spot
kVp or mAs
19. Has a positive charge
anode
increase scatter
x-rays
FFD
20. The effective focal spot is only 1/3 the size of the actual focal spot. this is called the
line focus principle
focal spot
sensitive cells
false
21. What is the difference between fluoroscopy and a regular radiograph
white and black are reversed
abnormalities
cathode filament
lines per centimeter
22. Must increase.....to compensate for x-ray absorption by the grid. (we triple our mAs)
rotating anode
false
stationary and rotating
kVp or mAs
23. What is the term for an unknown cause
true
highest mA and smallest time fraction
idiopathic
milliamperage
24. Cassettes can be made of.....Which is the type here - or they can be made of magnesium - vinyl - etc
the sharper the radiograph
true
aluminum
genetic and somatic
25. When.....collide with the anode - 99% of energy is released in the form of heat - and 1% of energy is in the form of x-rays
visible light
10
screens (phosphor layer)
electrons
26. This is used to take 'real-time' radiographs - used a lot in horses
screen film
film cassette
fluoroscopy
SOP
27. What is one of the most common areas of occurance for spinal problems ( 85% dachshunds)
speed
higher mA
thoracic(caudal) and lumbar
peak kilovoltage
28. Animal has broken femur - it's ideal to have How many radiographs for diagnostic purposes
2
phosphor layer dyes
focal spot
increase density
29. The picture formed after the film has been exposed to x-rays and then processed into a visible image.
intensifying screens
caudal border of scapula
radiograph
slow
30. Is the most common artifact in radiography
10
cathode
stationary and rotating
movement
31. We ideally take a radiograph of the abdomen at the peak of inspiration
highest mA and smallest time fraction
paralysis
false
5
32. Slowly growing dividing cells are the most sensitive to the effects of ionizing radiaton
false
luxations
short scale of contrast
0.5mm
33. These screens have increased definition/detail - need to have increased radiation exposure
nucleus pulposis
slow
increase scatter
quantum mottle
34. Less forgiving - high contrast - cannot tolerate changes in exposure or processing
narrow latitude film
calcium tungstate
white
heel effect
35. When processing film - the black areas are made of
true
lens
metallic silver
heel effect
36. What type of film has no screens or film cassettes
intussusception
dosimeter
non-screen
mAs
37. What type of film has the x-rays directly cause the latent image to be formed
non-screen
arthritis
somatic damage
unexposed AgBr
38. A device that moves the grid back and forth under the table. it helps to prevent grid lines from showing
potter-bucky diagram
true
non-screen film
double mAs
39. What needs to have high levels of x-ray absorbtion
black
screens (phosphor layer)
non-screen
3cc/#
40. If the thorax is greater than or equal to....you should use a grid
aluminum
15 cm
increase density
wobblers syndrome
41. What needs to have high levels of x-ray to light conversion with the correct energy and color for the type of film used
screens (phosphor layer)
double mAs
inversely proportional
cathode filament
42. If the kVp is too low
sensitive cells
non-screen
x-rays
no contrast
43. Infection of a disk - or bone near it
diskospondylitis
non-screen film
white
rotating anode
44. For bladder cystography - we use what contrast material instead of barium
false
hypaque
slow film
intussusception
45. Screen speed is.....to the exposure required to cause it to flouresce
kVp
peak kilovoltage
inversely proportional
anode
46. A grid must be used on the chest if it's 11cm thick
x-rays
adjustable lead shutters
false
reflective layer
47. This stage of pregnancy is the most dangerous for the fetus
first trimester
focal spot
cathode filament
whiter
48. If there's metal in the way of an x-ray - than no x-rays will get through and that part would be
white
10 cm
santes' rule
screens (phosphor layer)
49. If you use an mA of 300 - What time fraction must i use to get an mAs of 10?
back scatter
x-rays
1/30
whiter
50. What type of film gives more detailed radiographs but more exposure to everyone involved? (commonly used as dental film - or for extremities)
milliamperage
non-screen
rotating anode
silver halide