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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. Aluminum filter
lead cone and adjustable lead shutters
decrease scatter radiation
grid cutoff
false
2. They don't move - they're found in dental units and portable units - cannot withstand the heat produced from large units
false
back scatter
anode
stationary anode
3. A device that moves the grid back and forth under the table. it helps to prevent grid lines from showing
potter-bucky diagram
screen film
latent image
large crystals - small crystals
4. With this procedure - no x-ray film is involved at all
fluoroscopy
grid cutoff
annulus fibrosis
false
5. The mAs has to do with the power of the x-rays produced
false
narrow latitude film
abnormalities
secondary
6. To double the density
double mAs
reflective layer
2
electrons
7. Types of cell damage
white and black are reversed
screens (phosphor layer)
genetic and somatic
true
8. There are......intensifying screens within a cassette
x-rays
2
decrease scatter radiation
15 cm
9. In which processing solution do unionized (green) AgBr crystals get removed from the film
back scatter
fixer
lines per centimeter
grid
10. General purpose film - forgiving
wide latitude film
higher mA
2
screens (phosphor layer)
11. Old mAs x (new FFD)2 divided by (old FFD)2
inverse square law
large crystals - small crystals
intensifying screens
0.25mm
12. If barium leaks into the abdomen or lungs - it can cause what
fixer
inflammation an granuloma
caudal border of scapula
1/30
13. If the kVp is too high
increase scatter
more x-rays produced
cathode
cathode
14. Increase mAs and kVp in order to...
quantum mottle
increase density
15
mAs
15. If the x-ray tube is not 36-40 inches from the grid - this is called the
grid efficiency
lens
grid cutoff
joint mouse
16. Does move - has disks that rotate at high speeds - this helps spread out the heat that's produced as the electrons hit the focal spot
SOP
whiter
3cc/#
rotating anode
17. This number in santes' rule refers to the distance the x-ray tube is from the x-ray film
potter-bucky diagram
screens (phosphor layer)
40
milliamperage
18. In the dark room - the safe light (red light) needs to be at least how far away from the loading bench
4 ft
intensifying screens
increase density
more light
19. MAs for abdomen (standard mAs) x=?
5
cathode
cervical
40
20. Safe Operating Procedures
peak kilovoltage
indirect relationship
reflective layer
SOP
21. Between density and kVp
long scale of contrast
grey
phosphor layer dyes
indirect relationship
22. A type of electromagnetic radiation which have a shorter wavelength than visible light
rare earth elements
contrast
radiographic detail
x-rays
23. Faster screens/less detail; slower screens/more detail
afterglow
speed
cathode and anode
large crystals - small crystals
24. What is the term for when the animal's bowel engulfs a piece of bowel distal to it - causing blockage
idiopathic
white and black are reversed
intussusception
false
25. What is the term for the spotty appearance on the film due to the large crystals in the screens
false
false
hypaque
quantum mottle
26. Has a negative charge
mAs
cathode
grid cutoff
grid
27. AgBr + light =
screen film
grid cutoff
grey
non-screen
28. Within the collimator outlines just how much is collimated
false
light source
highest mA and smallest time fraction
slow film
29. What type of film has no screens or film cassettes
non-screen
genetic and somatic
15
focal spot
30. We ideally take a radiograph of the abdomen at the peak of inspiration
15 cm
more x-rays produced
false
high contrast
31. X-ray gloves have to have....of lead equivalent
0.5mm
non-screen
grid cutoff
cathode
32. Most commonly used film - compromise between graininess and speed (detail)
medium film
NYS Public Health Law #225
unexposed AgBr
decrease scatter radiation
33. What is one of the most common area of occurance for spinal problems (15% dobermans)
metallic silver
rare earth elements
cervical
arthritis
34. The effective focal spot is approximately 1/3 the size of the actual focal spot
radiographic detail
true
milliamperage
phosphor layer dyes
35. What is the term for an unknown cause
screens (phosphor layer)
decrease scatter radiation
idiopathic
inversely proportional
36. Increase what value to penetrate thick body parts
high contrast
kVp
rotating anode
Maximum Permissible Dose
37. We are supposed to use a grid if the abdomen is greater than or equal to......
focal spot
10 cm
intensifying screens
annulus fibrosis
38. Sheets of luminescent phosphor crystals bound together and mounted on a cardboard or plastic base
intensifying screens
more x-rays produced
screen film
Maximum Permissible Dose
39. Grid helps reduce the amount of......
spondylosis
osteomyelitis
scatter radiation
diskospondylitis
40. Screens are classified according to
slow
speed
increase scatter
caudal border of scapula
41. DJD is also called
arthritis
decrease scatter radiation
cervical
Maximum Permissible Dose
42. This is used to take 'real-time' radiographs - used a lot in horses
kVp
fluoroscopy
2
black
43. Has a positive charge
speed
anode
5
true
44. AgBr + x-rays =
fixer
focal film distance
stationary and rotating
non-screen film
45. Lead equivalent for apron
silver halide
cathode and anode
0.25mm
light source
46. When doing a lateral radiograph of the thorax/chest - the x-ray beam should be centered over what specific anatomical landmark
0.5mm
paresis
caudal border of scapula
whiter
47. With the heel effect - more x-rays tend to be in the beam toward this end of the tube
higher mA
grid focus
SOP
cathode
48. Increased crystal size.....
more light
caudal border of scapula
nucleus pulposis
somatic damage
49. Is the measurement for the maximum energy available at that setting
primary
lens
film cassette
peak kilovoltage
50. This pertains to the size of the electron cloud and thus directly to the number of x-ray produced
anode
medium film
non-screen
mAs